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KR=Object.freeze({__proto__:null,createScalarValue:K2,toTypedArray:na,now:cr,fetch:X2,encodeString:qp,decodeString:rh,shuffle:g,clamp:v,nearestLargerEven:w,sum:T,randUniform:N,distSquared:E,assert:k,assertShapesMatch:$,assertNonNull:M,flatten:G,sizeFromShape:O,isScalarShape:H,arraysEqual:K,isInt:nt,tanh:ct,sizeToSquarishShape:dt,createShuffledIndices:Ct,rightPad:St,repeatedTry:It,inferFromImplicitShape:Gt,parseAxisParam:Et,squeezeShape:Wt,getTypedArrayFromDType:_t,getArrayFromDType:Kt,checkConversionForErrors:Ne,isValidDtype:ce,hasEncodingLoss:me,isTypedArray:Re,bytesPerElement:gn,bytesFromStringArray:en,isString:dn,isBoolean:Zn,isNumber:Or,inferDtype:Us,isFunction:Ln,nearestDivisor:ms,computeStrides:Jt,toNestedArray:Mr,makeOnesTypedArray:Nv,makeZerosTypedArray:fu,makeZerosNestedTypedArray:Iv,assertNonNegativeIntegerDimensions:Ev,locToIndex:Qr,indexToLoc:ei,isPromise:ni});class XR{constructor(t,e){this.backendTimer=t,this.logger=e,e==null&&(this.logger=new JR)}profileKernel(t,e,r){let s,u=()=>{s=r()},l=this.backendTimer.time(u);for(let p=0;p<s.length;p++){let m=s[p];m.data().then(y=>{YR(y,m.dtype,t)})}let h={kernelName:t,outputs:s,inputs:e,timeMs:l.then(p=>p.kernelMs),extraInfo:l.then(p=>p.getExtraProfileInfo!=null?p.getExtraProfileInfo():"")};return h}logKernelProfile(t){let{kernelName:e,outputs:r,timeMs:s,inputs:u,extraInfo:l}=t;r.forEach(h=>{Promise.all([h.data(),s,l]).then(p=>{this.logger.logKernelProfile(e,h,p[0],p[1],u,p[2])})})}}function YR(n,t,e){if(t!=="float32")return!1;for(let r=0;r<n.length;r++){let s=n[r];if(isNaN(s)||!isFinite(s))return console.warn(`Found ${s} in the result of '${e}'`),!0}return!1}class JR{logKernelProfile(t,e,r,s,u,l){let h=typeof s=="number"?St(`${s}ms`,9):s.error,p=St(t,25),m=e.rank,y=e.size,b=St(e.shape.toString(),14),x="";for(let S in u){let C=u[S];if(C!=null){let I=C.shape||e.shape,D=I.length;x+=`${S}: ${D}D ${D>0?I:""} `}}console.log(`%c${p}	%c${h}	%c${m}D ${b}	%c${y}	%c${x}	%c${l}`,"font-weight:bold","color:red","color:blue","color: orange","color: green","color: steelblue")}}function ZR(n,t,e){let r={},s={};for(let p=0;p<t.length;p++)r[t[p].id]=!0;for(let p=0;p<n.length;p++){let m=n[p],y=m.inputs;for(let b in y){let x=y[b],S=!1;for(let C=0;C<t.length;C++)if(r[x.id]){m.outputs.forEach(I=>r[I.id]=!0),S=!0,s[m.id]=!0;break}if(S)break}}let u={};u[e.id]=!0;let l={};for(let p=n.length-1;p>=0;p--){let m=n[p],y=m.inputs;for(let b=0;b<m.outputs.length;b++)if(u[m.outputs[b].id]){for(let x in y)u[y[x].id]=!0,l[m.id]=!0;break}}let h=[];for(let p=0;p<n.length;p++){let m=n[p];if(s[m.id]&&l[m.id]){let y={};for(let x in m.inputs){let S=m.inputs[x];r[S.id]&&(y[x]=S)}let b=Object.assign({},m);b.inputs=y,b.outputs=m.outputs,h.push(b)}}return h}function QR(n,t,e,r){for(let s=t.length-1;s>=0;s--){let u=t[s],l=[];if(u.outputs.forEach(p=>{let m=n[p.id];m!=null?l.push(m):l.push(null)}),u.gradient==null)throw new Error(`Cannot compute gradient: gradient function not found for ${u.kernelName}.`);let h=u.gradient(l);for(let p in u.inputs){if(!(p in h))throw new Error(`Cannot backprop through input ${p}. Available gradients found: ${Object.keys(h)}.`);let m=e(()=>h[p]());if(m.dtype!=="float32")throw new Error(`Error in gradient for op ${u.kernelName}. The gradient of input ${p} must have 'float32' dtype, but has '${m.dtype}'`);let y=u.inputs[p];if(!K(m.shape,y.shape))throw new Error(`Error in gradient for op ${u.kernelName}. The gradient of input '${p}' has shape '${m.shape}', which does not match the shape of the input '${y.shape}'`);if(n[y.id]==null)n[y.id]=m;else{let b=n[y.id];n[y.id]=r(b,m),b.dispose()}}}}let Y2=20,sh=3,by=7;function tP(n,t,e,r){let s=Jt(t),u=eP(n,t,e,s),l=t.length,h=jp(n,t,e,s,u),p=["Tensor"];return r&&(p.push(`  dtype: ${e}`),p.push(`  rank: ${l}`),p.push(`  shape: [${t}]`),p.push("  values:")),p.push(h.map(m=>"    "+m).join(`
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`;for(let I=2;I<p;I++)C+=`
`;return x[x.length-1]=" "+x[x.length-1]+"]"+(u?"":C),x}function ah(n){let t=[];for(let e=0;e<n.length;e+=2)t.push([n[e],n[e+1]]);return t}class bn{constructor(t,e,r){if(this.dtype=e,this.shape=t.slice(),this.size=O(t),r!=null){let s=r.length;k(s===this.size,()=>`Length of values '${s}' does not match the size inferred by the shape '${this.size}'.`)}if(e==="complex64")throw new Error("complex64 dtype TensorBuffers are not supported. Please create a TensorBuffer for the real and imaginary parts separately and call tf.complex(real, imag).");this.values=r||Kt(e,this.size),this.strides=Jt(t)}set(t,...e){e.length===0&&(e=[0]),k(e.length===this.rank,()=>`The number of provided coordinates (${e.length}) must match the rank (${this.rank})`);let r=this.locToIndex(e);this.values[r]=t}get(...t){t.length===0&&(t=[0]);let e=0;for(let s of t){if(s<0||s>=this.shape[e]){let u=`Requested out of range element at ${t}.   Buffer shape=${this.shape}`;throw new Error(u)}e++}let r=t[t.length-1];for(let s=0;s<t.length-1;++s)r+=this.strides[s]*t[s];return this.values[r]}locToIndex(t){if(this.rank===0)return 0;if(this.rank===1)return t[0];let e=t[t.length-1];for(let r=0;r<t.length-1;++r)e+=this.strides[r]*t[r];return e}indexToLoc(t){if(this.rank===0)return[];if(this.rank===1)return[t];let e=new Array(this.shape.length);for(let r=0;r<e.length-1;++r)e[r]=Math.floor(t/this.strides[r]),t-=e[r]*this.strides[r];return e[e.length-1]=t,e}get rank(){return this.shape.length}toTensor(){return Gs().makeTensor(this.values,this.shape,this.dtype)}}let Gs=null,Tu=null,Z2=null;function nP(n){Gs=n}function rP(n){Tu=n}function sP(n){Z2=n}class at{constructor(t,e,r,s){this.kept=!1,this.isDisposedInternal=!1,this.shape=t.slice(),this.dtype=e||"float32",this.size=O(t),this.strides=Jt(t),this.dataId=r,this.id=s,this.rankType=this.rank<5?this.rank.toString():"higher"}get rank(){return this.shape.length}async buffer(){let t=await this.data();return Tu.buffer(this.shape,this.dtype,t)}bufferSync(){return Tu.buffer(this.shape,this.dtype,this.dataSync())}async array(){let t=await this.data();return Mr(this.shape,t)}arraySync(){return Mr(this.shape,this.dataSync())}async data(){this.throwIfDisposed();let t=Gs().read(this.dataId);if(this.dtype==="string"){let e=await t;try{return e.map(r=>rh(r))}catch(r){throw new Error("Failed to decode the string bytes into utf-8. To get the original bytes, call tensor.bytes().")}}return t}dataSync(){this.throwIfDisposed();let t=Gs().readSync(this.dataId);if(this.dtype==="string")try{return t.map(e=>rh(e))}catch(e){throw new Error("Failed to decode the string bytes into utf-8. To get the original bytes, call tensor.bytes().")}return t}async bytes(){this.throwIfDisposed();let t=await Gs().read(this.dataId);return this.dtype==="string"?t:new Uint8Array(t.buffer)}dispose(){if(this.isDisposed)return;Gs().disposeTensor(this),this.isDisposedInternal=!0}get isDisposed(){return this.isDisposedInternal}throwIfDisposed(){if(this.isDisposed)throw new Error("Tensor is disposed.")}print(t=!1){return Tu.print(this,t)}clone(){return this.throwIfDisposed(),Tu.clone(this)}toString(t=!1){let e=this.dataSync();return tP(e,this.shape,this.dtype,t)}cast(t){return this.throwIfDisposed(),Tu.cast(this,t)}variable(t=!0,e,r){return this.throwIfDisposed(),Gs().makeVariable(this,t,e,r)}}Object.defineProperty(at,Symbol.hasInstance,{value:n=>!!n&&n.data!=null&&n.dataSync!=null&&n.throwIfDisposed!=null});class ih extends at{constructor(t,e,r,s){super(t.shape,t.dtype,t.dataId,s);this.trainable=e,this.name=r}assign(t){if(t.dtype!==this.dtype)throw new Error(`dtype of the new value (${t.dtype}) and previous value (${this.dtype}) must match`);if(!K(t.shape,this.shape))throw new Error(`shape of the new value (${t.shape}) and previous value (${this.shape}) must match`);Gs().disposeTensor(this),this.dataId=t.dataId,Gs().incRef(this,null)}dispose(){Gs().disposeVariable(this),this.isDisposedInternal=!0}}Object.defineProperty(ih,Symbol.hasInstance,{value:n=>n instanceof at&&n.assign!=null&&n.assign instanceof Function});(function(n){n.R0="R0",n.R1="R1",n.R2="R2",n.R3="R3",n.R4="R4",n.R5="R5",n.R6="R6"})(o.Rank||(o.Rank={}));var wy;(function(n){n.float32="float32",n.int32="int32",n.bool="int32",n.complex64="complex64"})(wy||(wy={}));var xy;(function(n){n.float32="float32",n.int32="int32",n.bool="bool",n.complex64="complex64"})(xy||(xy={}));var Ty;(function(n){n.float32="float32",n.int32="float32",n.bool="float32",n.complex64="complex64"})(Ty||(Ty={}));var ky;(function(n){n.float32="complex64",n.int32="complex64",n.bool="complex64",n.complex64="complex64"})(ky||(ky={}));let oP={float32:Ty,int32:wy,bool:xy,complex64:ky};function Qn(n,t){if(n==="string"||t==="string"){if(n==="string"&&t==="string")return"string";throw new Error(`Can not upcast ${n} with ${t}`)}return oP[n][t]}function Kp(n){return Qn(n,"int32")}function nn(n,t){if(n.dtype===t.dtype)return[n,t];let e=Qn(n.dtype,t.dtype);return[n.cast(e),t.cast(e)]}function Q2(n,t){k(n.dtype===t.dtype,()=>`The dtypes of the first(${n.dtype}) and second(${t.dtype}) input must match`)}function Xp(n,t){return t.some(e=>e.id===n.id)}function mo(n){let t=[],e=new Set;return tS(n,t,e),t}function tS(n,t,e){if(n==null)return;if(n instanceof at){t.push(n);return}if(!aP(n))return;let r=n;for(let s in r){let u=r[s];e.has(u)||(e.add(u),tS(u,t,e))}}function aP(n){return Array.isArray(n)||typeof n=="object"}var iP=Object.freeze({__proto__:null,makeTypesMatch:nn,assertTypesMatch:Q2,isTensorInList:Xp,getTensorsInContainer:mo});class eS{constructor(){this.registeredVariables={},this.nextTapeNodeId=0,this.numBytes=0,this.numTensors=0,this.numStringTensors=0,this.numDataBuffers=0,this.gradientDepth=0,this.kernelDepth=0,this.scopeStack=[],this.numDataMovesStack=[],this.nextScopeId=0,this.tensorInfo=new WeakMap,this.profiling=!1,this.activeProfile={newBytes:0,newTensors:0,peakBytes:0,kernels:[],result:null}}dispose(){for(let t in this.registeredVariables)this.registeredVariables[t].dispose()}}class ku{constructor(t){this.ENV=t,this.registry={},this.registryFactory={},this.pendingBackendInitId=0,this.state=new eS}async ready(){if(this.pendingBackendInit!=null)return this.pendingBackendInit.then(()=>{});if(this.backendInstance!=null)return;let t=this.getSortedBackends();for(let e=0;e<t.length;e++){let r=t[e],s=await this.initializeBackend(r).success;if(s){await this.setBackend(r);return}}throw new Error("Could not initialize any backends, all backend initializations failed.")}get backend(){if(this.pendingBackendInit!=null)throw new Error(`Backend '${this.backendName}' has not yet been initialized. Make sure to await tf.ready() or await tf.setBackend() before calling other methods`);if(this.backendInstance==null){let{name:t,asyncInit:e}=this.initializeBackendsAndReturnBest();if(e)throw new Error(`The highest priority backend '${t}' has not yet been initialized. Make sure to await tf.ready() or await tf.setBackend() before calling other methods`);this.setBackend(t)}return this.backendInstance}backendNames(){return Object.keys(this.registryFactory)}findBackend(t){if(!(t in this.registry))if(t in this.registryFactory){let{asyncInit:e}=this.initializeBackend(t);if(e)return null}else return null;return this.registry[t]}findBackendFactory(t){return t in this.registryFactory?this.registryFactory[t].factory:null}registerBackend(t,e,r=1){return t in this.registryFactory?(console.warn(`${t} backend was already registered. Reusing existing backend factory.`),!1):(this.registryFactory[t]={factory:e,priority:r},!0)}async setBackend(t){if(this.registryFactory[t]==null)throw new Error(`Backend name '${t}' not found in registry`);if(this.backendName=t,this.registry[t]==null){this.backendInstance=null;let{success:e,asyncInit:r}=this.initializeBackend(t),s=r?await e:e;if(!s)return!1}return this.backendInstance=this.registry[t],this.setupRegisteredKernels(),this.profiler=new XR(this.backendInstance),!0}setupRegisteredKernels(){let t=Gp(this.backendName);t.forEach(e=>{e.setupFunc!=null&&e.setupFunc(this.backendInstance)})}disposeRegisteredKernels(t){let e=Gp(t);e.forEach(r=>{r.disposeFunc!=null&&r.disposeFunc(this.registry[t])})}initializeBackend(t){let e=this.registryFactory[t];if(e==null)throw new Error(`Cannot initialize backend ${t}, no registration found.`);try{let r=e.factory();if(r&&!(r instanceof f)&&typeof r.then=="function"){let s=++this.pendingBackendInitId,u=r.then(l=>s<this.pendingBackendInitId?!1:(this.registry[t]=l,this.pendingBackendInit=null,!0)).catch(l=>(s<this.pendingBackendInitId||(this.pendingBackendInit=null,console.warn(`Initialization of backend ${t} failed`),console.warn(l.stack||l.message)),!1));return this.pendingBackendInit=u,{success:u,asyncInit:!0}}else return this.registry[t]=r,{success:!0,asyncInit:!1}}catch(r){return console.warn(`Initialization of backend ${t} failed`),console.warn(r.stack||r.message),{success:!1,asyncInit:!1}}}removeBackend(t){if(!(t in this.registryFactory))throw new Error(`${t} backend not found in registry`);this.backendName===t&&this.pendingBackendInit!=null&&this.pendingBackendInitId++,t in this.registry&&(this.disposeRegisteredKernels(t),this.registry[t].dispose(),delete this.registry[t]),delete this.registryFactory[t],this.backendName===t&&(this.pendingBackendInit=null,this.backendName=null,this.backendInstance=null)}getSortedBackends(){if(Object.keys(this.registryFactory).length===0)throw new Error("No backend found in registry.");return Object.keys(this.registryFactory).sort((t,e)=>this.registryFactory[e].priority-this.registryFactory[t].priority)}initializeBackendsAndReturnBest(){let t=this.getSortedBackends();for(let e=0;e<t.length;e++){let r=t[e],{success:s,asyncInit:u}=this.initializeBackend(r);if(u||s)return{name:r,asyncInit:u}}throw new Error("Could not initialize any backends, all backend initializations failed.")}moveData(t,e){let r=this.state.tensorInfo.get(e),s=r.backend,u=this.readSync(e);s.disposeData(e),r.backend=t,t.move(e,u,r.shape,r.dtype),this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack[this.state.numDataMovesStack.length-1]++}tidy(t,e){let r=null;if(e==null){if(typeof t!="function")throw new Error("Please provide a function to tidy()");e=t}else{if(typeof t!="string"&&!(t instanceof String))throw new Error("When calling with two arguments, the first argument to tidy() must be a string");if(typeof e!="function")throw new Error("When calling with two arguments, the 2nd argument to tidy() must be a function");r=t}let s;return this.scopedRun(()=>this.startScope(r),()=>this.endScope(s),()=>(s=e(),s instanceof Promise&&console.error("Cannot return a Promise inside of tidy."),s))}scopedRun(t,e,r){t();try{let s=r();return e(),s}catch(s){throw e(),s}}nextTensorId(){return ku.nextTensorId++}nextVariableId(){return ku.nextVariableId++}clone(t){let e=this.makeTensorFromDataId(t.dataId,t.shape,t.dtype),r={x:t},s=l=>({x:()=>{let h="float32",p={x:l},m={dtype:h};return J.runKernelFunc(y=>y.cast(l,h),p,null,pu,m)}}),u=[];return this.addTapeNode(this.state.activeScope.name,r,[e],s,u,{}),e}runKernel(t,e,r,s,u){let l=null,h=null;return this.runKernelFunc(l,e,h,t,r,s,u)}shouldCheckForMemLeaks(){return this.ENV.getBool("IS_TEST")}checkKernelForMemLeak(t,e,r){let s=this.backend.numDataIds(),u=0;r.forEach(p=>{u+=p.dtype==="complex64"?3:1});let l=this.state.numDataMovesStack[this.state.numDataMovesStack.length-1],h=s-e-u-l;if(h>0)throw new Error(`Backend '${this.backendName}' has an internal memory leak (${h} data ids) after running '${t}'`)}runKernelFunc(t,e,r,s,u,l,h){let p,m=[],y=this.isTapeOn();s==null&&(s=this.state.activeScope!=null?this.state.activeScope.name:"");let b=this.state.numBytes,x=this.state.numTensors;this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack.push(0);let S,C=gy(s,this.backendName),I;if(C!=null)S=()=>{let R=this.backend.numDataIds();I=C.kernelFunc({inputs:e,attrs:u,backend:this.backend});let A=Array.isArray(I)?I:[I];this.shouldCheckForMemLeaks()&&this.checkKernelForMemLeak(s,R,A);let L=A.map(({dataId:_,shape:B,dtype:V})=>this.makeTensorFromDataId(_,B,V));if(y){let _=this.getTensorsForGradient(s,e,L);if(_==null){h==null&&(h=[]);let B=L.filter((V,q)=>h[q]);_=(l||[]).slice().concat(B)}m=this.saveTensorsForBackwardMode(_)}return L};else{let R=A=>{if(!y)return;m=A.map(L=>this.keep(this.clone(L)))};S=()=>{let A=this.backend.numDataIds();I=this.tidy(()=>t(this.backend,R));let L=Array.isArray(I)?I:[I];return this.shouldCheckForMemLeaks()&&this.checkKernelForMemLeak(s,A,L),L}}let D;return this.scopedRun(()=>this.state.kernelDepth++,()=>this.state.kernelDepth--,()=>{!this.ENV.getBool("DEBUG")&&!this.state.profiling?p=S():(D=this.profiler.profileKernel(s,e,()=>S()),this.ENV.getBool("DEBUG")&&this.profiler.logKernelProfile(D),p=D.outputs)}),y&&this.addTapeNode(s,e,p,r,m,u),this.state.profiling&&this.state.activeProfile.kernels.push({name:s,bytesAdded:this.state.numBytes-b,totalBytesSnapshot:this.state.numBytes,tensorsAdded:this.state.numTensors-x,totalTensorsSnapshot:this.state.numTensors,inputShapes:Object.keys(e).map(R=>e[R]!=null?e[R].shape:null),outputShapes:p.map(R=>R.shape),kernelTimeMs:D.timeMs,extraInfo:D.extraInfo}),Array.isArray(I)?p:p[0]}saveTensorsForBackwardMode(t){let e=t.map(r=>this.keep(this.clone(r)));return e}getTensorsForGradient(t,e,r){let s=vy(t);if(s!=null){let u=s.inputsToSave||[],l=s.outputsToSave||[],h;s.saveAllInputs?(k(Array.isArray(e),()=>"saveAllInputs is true, expected inputs to be an 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r=this.state.tensorInfo.has(t.dataId)?this.state.tensorInfo.get(t.dataId).refCount:0;if(this.state.numTensors++,t.dtype==="string"&&this.state.numStringTensors++,r===0){this.state.numDataBuffers++;let s=0;t.dtype!=="complex64"&&t.dtype!=="string"&&(s=t.size*gn(t.dtype)),this.state.tensorInfo.set(t.dataId,{backend:e||this.backend,dtype:t.dtype,shape:t.shape,bytes:s,refCount:0}),this.state.numBytes+=s}this.state.tensorInfo.get(t.dataId).refCount++,t instanceof ih||this.track(t)}disposeTensor(t){if(!this.state.tensorInfo.has(t.dataId))return;this.state.numTensors--,t.dtype==="string"&&this.state.numStringTensors--;let e=this.state.tensorInfo.get(t.dataId),r=e.refCount;r<=1?(t.dtype!=="complex64"&&(this.state.numBytes-=e.bytes),this.state.numDataBuffers--,e.backend.disposeData(t.dataId),this.state.tensorInfo.delete(t.dataId)):this.state.tensorInfo.get(t.dataId).refCount--}disposeVariables(){for(let t in this.state.registeredVariables){let e=this.state.registeredVariables[t];this.disposeVariable(e)}}disposeVariable(t){this.disposeTensor(t),this.state.registeredVariables[t.name]!=null&&delete this.state.registeredVariables[t.name]}memory(){let t=this.backend.memory();return t.numTensors=this.state.numTensors,t.numDataBuffers=this.state.numDataBuffers,t.numBytes=this.state.numBytes,this.state.numStringTensors>0&&(t.unreliable=!0,t.reasons==null&&(t.reasons=[]),t.reasons.push("Memory usage by string tensors is approximate (2 bytes per character)")),t}async profile(t){this.state.profiling=!0;let e=this.state.numBytes,r=this.state.numTensors;this.state.activeProfile.kernels=[],this.state.activeProfile.result=await t(),this.state.profiling=!1,this.state.activeProfile.peakBytes=Math.max(...this.state.activeProfile.kernels.map(s=>s.totalBytesSnapshot)),this.state.activeProfile.newBytes=this.state.numBytes-e,this.state.activeProfile.newTensors=this.state.numTensors-r;for(let s of this.state.activeProfile.kernels)s.kernelTimeMs=await s.kernelTimeMs,s.extraInfo=await s.extraInfo;return this.state.activeProfile}isTapeOn(){return this.state.gradientDepth>0&&this.state.kernelDepth===0}addTapeNode(t,e,r,s,u,l){let h={id:this.state.nextTapeNodeId++,kernelName:t,inputs:e,outputs:r,saved:u},p=vy(t);p!=null&&(s=p.gradFunc),s!=null&&(h.gradient=m=>(m=m.map((y,b)=>{if(y==null){let x=r[b],S=fu(x.size,x.dtype);return this.makeTensor(S,x.shape,x.dtype)}return y}),s(m.length>1?m:m[0],u,l))),this.state.activeTape.push(h)}keep(t){return t.kept=!0,t}startTape(){this.state.gradientDepth===0&&(this.state.activeTape=[]),this.state.gradientDepth++}endTape(){this.state.gradientDepth--}startScope(t){let e={track:[],name:"unnamed scope",id:this.state.nextScopeId++};t&&(e.name=t),this.state.scopeStack.push(e),this.state.activeScope=e}endScope(t){let e=mo(t),r=new Set(e.map(u=>u.id));for(let u=0;u<this.state.activeScope.track.length;u++){let l=this.state.activeScope.track[u];!l.kept&&!r.has(l.id)&&l.dispose()}let s=this.state.scopeStack.pop();this.state.activeScope=this.state.scopeStack.length===0?null:this.state.scopeStack[this.state.scopeStack.length-1],e.forEach(u=>{!u.kept&&u.scopeId===s.id&&this.track(u)})}gradients(t,e,r,s=!1){if(k(e.length>0,()=>"gradients() received an empty list of xs."),r!=null&&r.dtype!=="float32")throw new Error(`dy must have 'float32' dtype, but has '${r.dtype}'`);let u=this.scopedRun(()=>this.startTape(),()=>this.endTape(),()=>this.tidy("forward",t));k(u instanceof at,()=>"The result y returned by f() must be a tensor.");let l=ZR(this.state.activeTape,e,u);if(!s&&l.length===0&&e.length>0)throw new Error("Cannot compute gradient of y=f(x) with respect to x. 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Supported quantization dtypes are: 'uint8', 'uint16', and 'float16'.`);let x=Cy[b.dtype],S=n.slice(s,s+m*x),C=b.dtype==="uint8"?new Uint8Array(S):new Uint16Array(S);if(h==="float32")if(b.dtype==="uint8"||b.dtype==="uint16"){y=new Float32Array(C.length);for(let I=0;I<C.length;I++){let D=C[I];y[I]=D*b.scale+b.min}}else if(b.dtype==="float16")r===void 0&&(r=bP()),y=r(C);else throw new Error(`Unsupported quantization type ${b.dtype} for weight type float32.`);else if(h==="int32"){if(b.dtype!=="uint8"&&b.dtype!=="uint16")throw new Error(`Unsupported quantization type ${b.dtype} for weight type int32.`);y=new Int32Array(C.length);for(let I=0;I<C.length;I++){let D=C[I];y[I]=Math.round(D*b.scale+b.min)}}else throw new Error(`Unsupported dtype in weight '${l}': ${h}`);s+=m*x}else if(h==="string"){let b=O(u.shape);y=[];for(let x=0;x<b;x++){let S=new Uint32Array(n.slice(s,s+Yp))[0];s+=Yp;let C=new Uint8Array(n.slice(s,s+S));y.push(C),s+=S}}else{let b=Cy[h],x=n.slice(s,s+m*b);if(h==="float32")y=new Float32Array(x);else if(h==="int32")y=new Int32Array(x);else if(h==="bool")y=new Uint8Array(x);else if(h==="complex64"){y=new Float32Array(x);let S=new Float32Array(y.length/2),C=new Float32Array(y.length/2);for(let R=0;R<S.length;R++)S[R]=y[R*2],C[R]=y[R*2+1];let I=vn(S,p,"float32"),D=vn(C,p,"float32");e[l]=vo(I,D),I.dispose(),D.dispose()}else throw new Error(`Unsupported dtype in weight '${l}': ${h}`);s+=m*b}h!=="complex64"&&(e[l]=vn(y,p,h))}return e}function pP(n){if(n===null)throw new Error(`Invalid input value: ${JSON.stringify(n)}`);let t=0,e=[];n.forEach(u=>{if(t+=u.byteLength,e.push(u.byteLength===u.buffer.byteLength?u:new u.constructor(u)),!(u instanceof Float32Array||u instanceof Int32Array||u instanceof Uint8Array))throw new Error(`Unsupported TypedArray subtype: ${u.constructor.name}`)});let r=new Uint8Array(t),s=0;return e.forEach(u=>{r.set(new Uint8Array(u.buffer),s),s+=u.byteLength}),r.buffer}let Iy=typeof Buffer!="undefined"&&(typeof Blob=="undefined"||typeof atob=="undefined"||typeof btoa=="undefined");function iS(n){return Iy?Buffer.byteLength(n):new Blob([n]).size}function dP(n){if(Iy)return Buffer.from(n).toString("base64");let t=new Uint8Array(n),e="";for(let r=0,s=t.length;r<s;r++)e+=String.fromCharCode(t[r]);return btoa(e)}function mP(n){if(Iy){let r=Buffer.from(n,"base64");return r.buffer.slice(r.byteOffset,r.byteOffset+r.byteLength)}let t=atob(n),e=new Uint8Array(t.length);for(let r=0;r<t.length;++r)e.set([t.charCodeAt(r)],r);return e.buffer}function Zp(n){if(n.length===1)return n[0];let t=0;n.forEach(s=>{t+=s.byteLength});let e=new Uint8Array(t),r=0;return n.forEach(s=>{e.set(new Uint8Array(s),r),r+=s.byteLength}),e.buffer}function uS(n){let t="/";for(n=n.trim();n.endsWith(t);)n=n.slice(0,n.length-1);let e=n.split(t);return e[e.length-1]}function ch(n){if(n.modelTopology instanceof ArrayBuffer)throw new Error("Expected JSON model topology, received ArrayBuffer.");return{dateSaved:new Date,modelTopologyType:"JSON",modelTopologyBytes:n.modelTopology==null?0:iS(JSON.stringify(n.modelTopology)),weightSpecsBytes:n.weightSpecs==null?0:iS(JSON.stringify(n.weightSpecs)),weightDataBytes:n.weightData==null?0:n.weightData.byteLength}}function gP(){let n=e=>{let r=e<<13,s=0;for(;(r&8388608)===0;)s-=8388608,r<<=1;return r&=~8388608,s+=947912704,r|s},t=new Uint32Array(2048);t[0]=0;for(let e=1;e<1024;e++)t[e]=n(e);for(let e=1024;e<2048;e++)t[e]=939524096+(e-1024<<13);return t}function vP(){let n=new Uint32Array(64);n[0]=0,n[31]=1199570944,n[32]=2147483648,n[63]=3347054592;for(let t=1;t<31;t++)n[t]=t<<23;for(let t=33;t<63;t++)n[t]=2147483648+(t-32<<23);return n}function yP(){let n=new Uint32Array(64);for(let t=0;t<64;t++)n[t]=1024;return n[0]=n[32]=0,n}function bP(){let n=gP(),t=vP(),e=yP();return r=>{let s=new ArrayBuffer(4*r.length),u=new Uint32Array(s);for(let l=0;l<r.length;l++){let h=r[l],p=n[e[h>>10]+(h&1023)]+t[h>>10];u[l]=p}return new Float32Array(s)}}class rn{constructor(){this.saveRouters=[],this.loadRouters=[]}static getInstance(){return rn.instance==null&&(rn.instance=new rn),rn.instance}static registerSaveRouter(t){rn.getInstance().saveRouters.push(t)}static registerLoadRouter(t){rn.getInstance().loadRouters.push(t)}static getSaveHandlers(t){return rn.getHandlers(t,"save")}static getLoadHandlers(t,e){return rn.getHandlers(t,"load",e)}static getHandlers(t,e,r){let s=[],u=e==="load"?rn.getInstance().loadRouters:rn.getInstance().saveRouters;return u.forEach(l=>{let h=l(t,r);h!==null&&s.push(h)}),s}}let wP=n=>rn.registerSaveRouter(n),xP=n=>rn.registerLoadRouter(n),Ey=n=>rn.getSaveHandlers(n),Dy=(n,t)=>rn.getLoadHandlers(n,t);let Qp="tensorflowjs",$y=1,si="models_store",sa="model_info_store";async function rht(){let n=Ay();return new Promise((t,e)=>{let r=n.deleteDatabase(Qp);r.onsuccess=()=>t(),r.onerror=s=>e(s)})}function Ay(){if(!ft().getBool("IS_BROWSER"))throw new Error("Failed to obtain IndexedDB factory because the current environmentis not a web browser.");let n=typeof window=="undefined"?self:window,t=n.indexedDB||n.mozIndexedDB||n.webkitIndexedDB||n.msIndexedDB||n.shimIndexedDB;if(t==null)throw new Error("The current browser does not appear to support IndexedDB.");return t}function _y(n){let t=n.result;t.createObjectStore(si,{keyPath:"modelPath"}),t.createObjectStore(sa,{keyPath:"modelPath"})}class oi{constructor(t){if(this.indexedDB=Ay(),t==null||!t)throw new Error("For IndexedDB, modelPath must not be null, undefined or empty.");this.modelPath=t}async save(t){if(t.modelTopology instanceof ArrayBuffer)throw new Error("BrowserLocalStorage.save() does not support saving model topology in binary formats yet.");return this.databaseAction(this.modelPath,t)}async load(){return this.databaseAction(this.modelPath)}databaseAction(t,e){return new Promise((r,s)=>{let u=this.indexedDB.open(Qp,$y);u.onupgradeneeded=()=>_y(u),u.onsuccess=()=>{let l=u.result;if(e==null){let h=l.transaction(si,"readonly"),p=h.objectStore(si),m=p.get(this.modelPath);m.onsuccess=()=>{if(m.result==null)return l.close(),s(new Error(`Cannot find model with path '${this.modelPath}' in IndexedDB.`));r(m.result.modelArtifacts)},m.onerror=y=>(l.close(),s(m.error)),h.oncomplete=()=>l.close()}else{let h=ch(e),p=l.transaction(sa,"readwrite"),m=p.objectStore(sa),y=m.put({modelPath:this.modelPath,modelArtifactsInfo:h}),b;y.onsuccess=()=>{b=l.transaction(si,"readwrite");let x=b.objectStore(si),S=x.put({modelPath:this.modelPath,modelArtifacts:e,modelArtifactsInfo:h});S.onsuccess=()=>r({modelArtifactsInfo:h}),S.onerror=C=>{m=p.objectStore(sa);let I=m.delete(this.modelPath);I.onsuccess=()=>(l.close(),s(S.error)),I.onerror=D=>(l.close(),s(S.error))}},y.onerror=x=>(l.close(),s(y.error)),p.oncomplete=()=>{b==null?l.close():b.oncomplete=()=>l.close()}}},u.onerror=l=>s(u.error)})}}oi.URL_SCHEME="indexeddb://";let cS=n=>ft().getBool("IS_BROWSER")&&(!Array.isArray(n)&&n.startsWith(oi.URL_SCHEME))?TP(n.slice(oi.URL_SCHEME.length)):null;rn.registerSaveRouter(cS),rn.registerLoadRouter(cS);function TP(n){return new oi(n)}function kP(n){return n.startsWith(oi.URL_SCHEME)?n.slice(oi.URL_SCHEME.length):n}class SP{constructor(){this.indexedDB=Ay()}async listModels(){return new Promise((t,e)=>{let r=this.indexedDB.open(Qp,$y);r.onupgradeneeded=()=>_y(r),r.onsuccess=()=>{let s=r.result,u=s.transaction(sa,"readonly"),l=u.objectStore(sa),h=l.getAll();h.onsuccess=()=>{let p={};for(let m of h.result)p[m.modelPath]=m.modelArtifactsInfo;t(p)},h.onerror=p=>(s.close(),e(h.error)),u.oncomplete=()=>s.close()},r.onerror=s=>e(r.error)})}async removeModel(t){return t=kP(t),new Promise((e,r)=>{let s=this.indexedDB.open(Qp,$y);s.onupgradeneeded=()=>_y(s),s.onsuccess=()=>{let u=s.result,l=u.transaction(sa,"readwrite"),h=l.objectStore(sa),p=h.get(t),m;p.onsuccess=()=>{if(p.result==null)return u.close(),r(new Error(`Cannot find model with path '${t}' in IndexedDB.`));{let y=h.delete(t),b=()=>{m=u.transaction(si,"readwrite");let x=m.objectStore(si),S=x.delete(t);S.onsuccess=()=>e(p.result.modelArtifactsInfo),S.onerror=C=>r(p.error)};y.onsuccess=b,y.onerror=x=>(b(),u.close(),r(p.error))}},p.onerror=y=>(u.close(),r(p.error)),l.oncomplete=()=>{m==null?u.close():m.oncomplete=()=>u.close()}},s.onerror=u=>r(s.error)})}}let qs="/",ai="tensorflowjs_models",lS="info",CP="model_topology",NP="weight_specs",IP="weight_data",EP="model_metadata";function sht(){if(!ft().getBool("IS_BROWSER")||typeof window=="undefined"||typeof window.localStorage=="undefined")throw new Error("purgeLocalStorageModels() cannot proceed because local storage is unavailable in the current environment.");let n=window.localStorage,t=[];for(let e=0;e<n.length;++e){let r=n.key(e),s=ai+qs;if(r.startsWith(s)&&r.length>s.length){n.removeItem(r);let u=fS(r);t.indexOf(u)===-1&&t.push(u)}}return t}function hS(n){return{info:[ai,n,lS].join(qs),topology:[ai,n,CP].join(qs),weightSpecs:[ai,n,NP].join(qs),weightData:[ai,n,IP].join(qs),modelMetadata:[ai,n,EP].join(qs)}}function fS(n){let t=n.split(qs);if(t.length<3)throw new Error(`Invalid key format: ${n}`);return t.slice(1,t.length-1).join(qs)}function DP(n){return n.startsWith(ii.URL_SCHEME)?n.slice(ii.URL_SCHEME.length):n}class ii{constructor(t){if(!ft().getBool("IS_BROWSER")||typeof window=="undefined"||typeof window.localStorage=="undefined")throw new Error("The current environment does not support local storage.");if(this.LS=window.localStorage,t==null||!t)throw new Error("For local storage, modelPath must not be null, undefined or empty.");this.modelPath=t,this.keys=hS(this.modelPath)}async save(t){if(t.modelTopology instanceof ArrayBuffer)throw new Error("BrowserLocalStorage.save() does not support saving model topology in binary formats yet.");{let e=JSON.stringify(t.modelTopology),r=JSON.stringify(t.weightSpecs),s=ch(t);try{return this.LS.setItem(this.keys.info,JSON.stringify(s)),this.LS.setItem(this.keys.topology,e),this.LS.setItem(this.keys.weightSpecs,r),this.LS.setItem(this.keys.weightData,dP(t.weightData)),this.LS.setItem(this.keys.modelMetadata,JSON.stringify({format:t.format,generatedBy:t.generatedBy,convertedBy:t.convertedBy,userDefinedMetadata:t.userDefinedMetadata})),{modelArtifactsInfo:s}}catch(u){throw this.LS.removeItem(this.keys.info),this.LS.removeItem(this.keys.topology),this.LS.removeItem(this.keys.weightSpecs),this.LS.removeItem(this.keys.weightData),this.LS.removeItem(this.keys.modelMetadata),new Error(`Failed to save model '${this.modelPath}' to local storage: size quota being exceeded is a possible cause of this failure: modelTopologyBytes=${s.modelTopologyBytes}, weightSpecsBytes=${s.weightSpecsBytes}, weightDataBytes=${s.weightDataBytes}.`)}}}async load(){let t=JSON.parse(this.LS.getItem(this.keys.info));if(t==null)throw new Error(`In local storage, there is no model with name '${this.modelPath}'`);if(t.modelTopologyType!=="JSON")throw new Error("BrowserLocalStorage does not support loading non-JSON model topology yet.");let e={},r=JSON.parse(this.LS.getItem(this.keys.topology));if(r==null)throw new Error(`In local storage, the topology of model '${this.modelPath}' is missing.`);e.modelTopology=r;let s=JSON.parse(this.LS.getItem(this.keys.weightSpecs));if(s==null)throw new Error(`In local storage, the weight specs of model '${this.modelPath}' are missing.`);e.weightSpecs=s;let u=this.LS.getItem(this.keys.modelMetadata);if(u!=null){let h=JSON.parse(u);e.format=h.format,e.generatedBy=h.generatedBy,e.convertedBy=h.convertedBy,e.userDefinedMetadata=h.userDefinedMetadata}let l=this.LS.getItem(this.keys.weightData);if(l==null)throw new Error(`In local storage, the binary weight values of model '${this.modelPath}' are missing.`);return e.weightData=mP(l),e}}ii.URL_SCHEME="localstorage://";let pS=n=>ft().getBool("IS_BROWSER")&&(!Array.isArray(n)&&n.startsWith(ii.URL_SCHEME))?$P(n.slice(ii.URL_SCHEME.length)):null;rn.registerSaveRouter(pS),rn.registerLoadRouter(pS);function $P(n){return new ii(n)}class AP{constructor(){k(ft().getBool("IS_BROWSER"),()=>"Current environment is not a web browser"),k(typeof window=="undefined"||typeof window.localStorage!="undefined",()=>"Current browser does not appear to support localStorage"),this.LS=window.localStorage}async listModels(){let t={},e=ai+qs,r=qs+lS;for(let s=0;s<this.LS.length;++s){let u=this.LS.key(s);if(u.startsWith(e)&&u.endsWith(r)){let l=fS(u);t[l]=JSON.parse(this.LS.getItem(u))}}return t}async removeModel(t){t=DP(t);let e=hS(t);if(this.LS.getItem(e.info)==null)throw new Error(`Cannot find model at path '${t}'`);let r=JSON.parse(this.LS.getItem(e.info));return this.LS.removeItem(e.info),this.LS.removeItem(e.topology),this.LS.removeItem(e.weightSpecs),this.LS.removeItem(e.weightData),r}}let Su="://";class Sr{constructor(){this.managers={}}static getInstance(){return Sr.instance==null&&(Sr.instance=new Sr),Sr.instance}static registerManager(t,e){k(t!=null,()=>"scheme must not be undefined or null."),t.endsWith(Su)&&(t=t.slice(0,t.indexOf(Su))),k(t.length>0,()=>"scheme must not be an empty string.");let r=Sr.getInstance();k(r.managers[t]==null,()=>`A model store manager is already registered for scheme '${t}'.`),r.managers[t]=e}static getManager(t){let e=this.getInstance().managers[t];if(e==null)throw new Error(`Cannot find model manager for scheme '${t}'`);return e}static getSchemes(){return Object.keys(this.getInstance().managers)}}function td(n){if(n.indexOf(Su)===-1)throw new Error(`The url string provided does not contain a scheme. Supported schemes are: ${Sr.getSchemes().join(",")}`);return{scheme:n.split(Su)[0],path:n.split(Su)[1]}}async function dS(n,t,e=!1){k(n!==t,()=>`Old path and new path are the same: '${n}'`);let r=rn.getLoadHandlers(n);k(r.length>0,()=>`Copying failed because no load handler is found for source URL ${n}.`),k(r.length<2,()=>`Copying failed because more than one (${r.length}) load handlers for source URL ${n}.`);let s=r[0],u=rn.getSaveHandlers(t);k(u.length>0,()=>`Copying failed because no save handler is found for destination URL ${t}.`),k(u.length<2,()=>`Copying failed because more than one (${r.length}) save handlers for destination URL ${t}.`);let l=u[0],h=td(n).scheme,p=td(n).path,m=h===td(n).scheme,y=await s.load();e&&m&&await Sr.getManager(h).removeModel(p);let b=await l.save(y);return e&&!m&&await Sr.getManager(h).removeModel(p),b.modelArtifactsInfo}async function _P(){let n=Sr.getSchemes(),t={};for(let e of n){let r=await Sr.getManager(e).listModels();for(let s in r){let u=e+Su+s;t[u]=r[s]}}return t}async function FP(n){let t=td(n),e=Sr.getManager(t.scheme);return e.removeModel(t.path)}async function RP(n,t){let e=!1;return dS(n,t,e)}async function PP(n,t){let e=!0;return dS(n,t,e)}class OP{fetch(t,e){return fetch(t,e)}now(){return performance.now()}encode(t,e){if(e!=="utf-8"&&e!=="utf8")throw new Error(`Browser's encoder only supports utf-8, but got ${e}`);return this.textEncoder==null&&(this.textEncoder=new TextEncoder),this.textEncoder.encode(t)}decode(t,e){return new TextDecoder(e).decode(t)}}if(ft().get("IS_BROWSER")){ft().setPlatform("browser",new OP);try{Sr.registerManager(ii.URL_SCHEME,new AP)}catch(n){}try{Sr.registerManager(oi.URL_SCHEME,new SP)}catch(n){}}let MP={importFetch:()=>Nx()},Cu;function oht(){Cu=null}function aht(n){Cu=n}function iht(){return Cu}class LP{constructor(){this.util=require("util"),this.textEncoder=new this.util.TextEncoder}fetch(t,e){return ft().global.fetch!=null?ft().global.fetch(t,e):(Cu==null&&(Cu=MP.importFetch()),Cu(t,e))}now(){let t=process.hrtime();return t[0]*1e3+t[1]/1e6}encode(t,e){if(e!=="utf-8"&&e!=="utf8")throw new Error(`Node built-in encoder only supports utf-8, but got ${e}`);return this.textEncoder.encode(t)}decode(t,e){return t.length===0?"":new this.util.TextDecoder(e).decode(t)}}ft().get("IS_NODE")&&ft().setPlatform("node",new LP);function Ae(n,t="float32",e){return t=t||"float32",Ev(n),new bn(n,t,e)}function BP(n,t){let e=z(n,"x","cast");if(!ce(t))throw new Error(`Failed to cast to unknown dtype ${t}`);if(t==="string"&&e.dtype!=="string"||t!=="string"&&e.dtype==="string")throw new Error("Only strings can be casted to strings");let r={x:e},s={dtype:t};return J.runKernelFunc(u=>u.cast(e,t),r,null,pu,s)}let Rt=X({cast_:BP});function zP(n){let t=z(n,"x","clone",null),e=()=>J.makeTensorFromDataId(t.dataId,t.shape,t.dtype),r={x:t};return J.runKernelFunc(e,r,null,Al)}let oa=X({clone_:zP});function mS(n,t=!1){console.log(n.toString(t))}nS();let WP={buffer:Ae,cast:Rt,clone:oa,print:mS};rP(WP);let VP="model",UP=".json",GP=".weights.bin";function gS(n){return new Promise(t=>setTimeout(t)).then(n)}class ui{constructor(t){if(!ft().getBool("IS_BROWSER"))throw new Error("browserDownloads() cannot proceed because the current environment is not a browser.");t.startsWith(ui.URL_SCHEME)&&(t=t.slice(ui.URL_SCHEME.length)),(t==null||t.length===0)&&(t=VP),this.modelTopologyFileName=t+UP,this.weightDataFileName=t+GP}async save(t){if(typeof document=="undefined")throw new Error("Browser downloads are not supported in this environment since `document` is not present");let e=window.URL.createObjectURL(new Blob([t.weightData],{type:"application/octet-stream"}));if(t.modelTopology instanceof ArrayBuffer)throw new Error("BrowserDownloads.save() does not support saving model topology in binary formats yet.");{let r=[{paths:["./"+this.weightDataFileName],weights:t.weightSpecs}],s={modelTopology:t.modelTopology,format:t.format,generatedBy:t.generatedBy,convertedBy:t.convertedBy,weightsManifest:r},u=window.URL.createObjectURL(new Blob([JSON.stringify(s)],{type:"application/json"})),l=this.jsonAnchor==null?document.createElement("a"):this.jsonAnchor;if(l.download=this.modelTopologyFileName,l.href=u,await gS(()=>l.dispatchEvent(new MouseEvent("click"))),t.weightData!=null){let h=this.weightDataAnchor==null?document.createElement("a"):this.weightDataAnchor;h.download=this.weightDataFileName,h.href=e,await gS(()=>h.dispatchEvent(new MouseEvent("click")))}return{modelArtifactsInfo:ch(t)}}}}ui.URL_SCHEME="downloads://";class HP{constructor(t){if(t==null||t.length<1)throw new Error(`When calling browserFiles, at least 1 file is required, but received ${t}`);this.files=t}async load(){let t=this.files[0],e=this.files.slice(1);return new Promise((r,s)=>{let u=new FileReader;u.onload=l=>{let 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e=z(n,"labels","sigmoidCrossEntropyWithLogits"),r=z(t,"logits","sigmoidCrossEntropyWithLogits");$(e.shape,r.shape,"Error in sigmoidCrossEntropyWithLogits: ");let s=Ys(r),u=st(r,e),l=wd(Br(on(kn(r))));return Nt(Mt(s,u),l)}function Zz(n,t,e,r=0,s=o.Reduction.SUM_BY_NONZERO_WEIGHTS){let u=z(n,"multiClassLabels","sigmoidCrossEntropy"),l=z(t,"logits","sigmoidCrossEntropy"),h=null;if(e!=null&&(h=z(e,"weights","sigmoidCrossEntropy")),$(u.shape,l.shape,"Error in sigmoidCrossEntropy: "),r>0){let m=Ot(r),y=Ot(1),b=Ot(.5);u=Nt(st(u,Mt(y,m)),st(b,m))}let p=Jz(u,l);return To(p,h,s)}let Qz=X({sigmoidCrossEntropy_:Zz});function t4(n,t,e=-1){if(e===-1&&(e=t.rank-1),e!==t.rank-1)throw Error(`Softmax cross entropy along a non-last dimension is not yet supported. 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r4={fft:Ih,ifft:Bu,rfft:Eh,irfft:Fd},s4={hammingWindow:ez,hannWindow:AC,frame:_C,stft:oz},da={flipLeftRight:cz,resizeNearestNeighbor:PC,resizeBilinear:RC,rotateWithOffset:hz,cropAndResize:iz,nonMaxSuppression:pz,nonMaxSuppressionAsync:xz,nonMaxSuppressionWithScore:kz,nonMaxSuppressionWithScoreAsync:Cz,nonMaxSuppressionPadded:Iz,nonMaxSuppressionPaddedAsync:Dz},MC={bandPart:Fz,gramSchmidt:Pz,qr:Mz},o4={absoluteDifference:zz,computeWeightedLoss:To,cosineDistance:Vz,hingeLoss:Gz,huberLoss:qz,logLoss:Kz,meanSquaredError:Yz,sigmoidCrossEntropy:Qz,softmaxCrossEntropy:n4};class ko extends li{minimize(t,e=!1,r){let{value:s,grads:u}=this.computeGradients(t,r);if(r!=null){let l=r.map(h=>({name:h.name,tensor:u[h.name]}));this.applyGradients(l)}else this.applyGradients(u);return oe(u),e?s:(s.dispose(),null)}get iterations(){return this.iterations_==null&&(this.iterations_=0),this.iterations_}incrementIterations(){this.iterations_=this.iterations+1}computeGradients(t,e){return db(t,e)}dispose(){this.iterations_!=null&&oe(this.iterations_)}async saveIterations(){return this.iterations_==null&&(this.iterations_=0),{name:"iter",tensor:Ot(this.iterations_,"int32")}}async getWeights(){throw new Error("getWeights() is not implemented for this optimizer yet.")}async setWeights(t){throw new Error(`setWeights() is not implemented for this optimizer class ${this.getClassName()}`)}async extractIterations(t){return this.iterations_=(await t[0].tensor.data())[0],t.slice(1)}}Object.defineProperty(ko,Symbol.hasInstance,{value:n=>n.minimize!=null&&n.computeGradients!=null&&n.applyGradients!=null});class Ah extends ko{constructor(t,e,r=null){super();this.learningRate=t,this.rho=e,this.epsilon=r,this.accumulatedGrads=[],this.accumulatedUpdates=[],r==null&&(this.epsilon=J.backend.epsilon())}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);e.forEach((r,s)=>{let u=J.registeredVariables[r],l=!1;this.accumulatedGrads[s]==null&&(this.accumulatedGrads[s]={originalName:`${r}/accum_grad`,variable:ot(()=>fe(u).variable(l))}),this.accumulatedUpdates[s]==null&&(this.accumulatedUpdates[s]={originalName:`${r}/accum_var`,variable:ot(()=>fe(u).variable(l))});let h=Array.isArray(t)?t[s].tensor:t[r];if(h==null)return;let p=this.accumulatedGrads[s].variable,m=this.accumulatedUpdates[s].variable;ot(()=>{let y=Nt(st(p,this.rho),st(Oe(h),1-this.rho)),b=st(Ht(Wn(Nt(m,this.epsilon)),Wn(Nt(p,this.epsilon))),h),x=Nt(st(m,this.rho),st(Oe(b),1-this.rho));p.assign(y),m.assign(x);let S=Nt(st(b,-this.learningRate),u);u.assign(S)})}),this.incrementIterations()}dispose(){this.accumulatedUpdates!=null&&(oe(this.accumulatedGrads.map(t=>t.variable)),oe(this.accumulatedUpdates.map(t=>t.variable)))}async getWeights(){let t=[...this.accumulatedGrads,...this.accumulatedUpdates];return[await this.saveIterations()].concat(t.map(e=>({name:e.originalName,tensor:e.variable})))}async setWeights(t){t=await this.extractIterations(t);let e=t.length/2,r=!1;this.accumulatedGrads=t.slice(0,e).map(s=>({originalName:s.name,variable:s.tensor.variable(r)})),this.accumulatedUpdates=t.slice(e,e*2).map(s=>({originalName:s.name,variable:s.tensor.variable(r)}))}getConfig(){return{learningRate:this.learningRate,rho:this.rho,epsilon:this.epsilon}}static fromConfig(t,e){return new t(e.learningRate,e.rho,e.epsilon)}}Ah.className="Adadelta",kt(Ah);class _h extends ko{constructor(t,e=.1){super();this.learningRate=t,this.initialAccumulatorValue=e,this.accumulatedGrads=[]}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);e.forEach((r,s)=>{let u=J.registeredVariables[r];if(this.accumulatedGrads[s]==null){let p=!1;this.accumulatedGrads[s]={originalName:`${r}/accumulator`,variable:ot(()=>Au(u.shape,this.initialAccumulatorValue).variable(p))}}let l=Array.isArray(t)?t[s].tensor:t[r];if(l==null)return;let h=this.accumulatedGrads[s].variable;ot(()=>{let p=Nt(h,Oe(l));h.assign(p);let m=Nt(st(Ht(l,Wn(Nt(p,J.backend.epsilon()))),-this.learningRate),u);u.assign(m)})}),this.incrementIterations()}dispose(){this.accumulatedGrads!=null&&oe(this.accumulatedGrads.map(t=>t.variable))}async getWeights(){return[await this.saveIterations()].concat(this.accumulatedGrads.map(t=>({name:t.originalName,tensor:t.variable})))}async setWeights(t){t=await this.extractIterations(t);let e=!1;this.accumulatedGrads=t.map(r=>({originalName:r.name,variable:r.tensor.variable(e)}))}getConfig(){return{learningRate:this.learningRate,initialAccumulatorValue:this.initialAccumulatorValue}}static fromConfig(t,e){return new t(e.learningRate,e.initialAccumulatorValue)}}_h.className="Adagrad",kt(_h);class Fh extends ko{constructor(t,e,r,s=null){super();this.learningRate=t,this.beta1=e,this.beta2=r,this.epsilon=s,this.accumulatedFirstMoment=[],this.accumulatedSecondMoment=[],ot(()=>{this.accBeta1=Ot(e).variable(),this.accBeta2=Ot(r).variable()}),s==null&&(this.epsilon=J.backend.epsilon())}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);ot(()=>{let r=Mt(1,this.accBeta1),s=Mt(1,this.accBeta2);e.forEach((u,l)=>{let h=J.registeredVariables[u],p=!1;this.accumulatedFirstMoment[l]==null&&(this.accumulatedFirstMoment[l]={originalName:`${u}/m`,variable:ot(()=>fe(h).variable(p))}),this.accumulatedSecondMoment[l]==null&&(this.accumulatedSecondMoment[l]={originalName:`${u}/v`,variable:ot(()=>fe(h).variable(p))});let m=Array.isArray(t)?t[l].tensor:t[u];if(m==null)return;let y=this.accumulatedFirstMoment[l].variable,b=this.accumulatedSecondMoment[l].variable,x=Nt(st(y,this.beta1),st(m,1-this.beta1)),S=Nt(st(b,this.beta2),st(Oe(m),1-this.beta2)),C=Ht(x,r),I=Ht(S,s);y.assign(x),b.assign(S);let D=Nt(st(Ht(C,Nt(Wn(I),this.epsilon)),-this.learningRate),h);h.assign(D)}),this.accBeta1.assign(st(this.accBeta1,this.beta1)),this.accBeta2.assign(st(this.accBeta2,this.beta2))}),this.incrementIterations()}dispose(){this.accBeta1.dispose(),this.accBeta2.dispose(),this.accumulatedFirstMoment!=null&&oe(this.accumulatedFirstMoment.map(t=>t.variable)),this.accumulatedSecondMoment!=null&&oe(this.accumulatedSecondMoment.map(t=>t.variable))}async getWeights(){let t=[...this.accumulatedFirstMoment,...this.accumulatedSecondMoment];return[await this.saveIterations()].concat(t.map(e=>({name:e.originalName,tensor:e.variable})))}async setWeights(t){t=await this.extractIterations(t),ot(()=>{this.accBeta1.assign(ys(this.beta1,this.iterations_+1)),this.accBeta2.assign(ys(this.beta2,this.iterations_+1))});let e=t.length/2,r=!1;this.accumulatedFirstMoment=t.slice(0,e).map(s=>({originalName:s.name,variable:s.tensor.variable(r)})),this.accumulatedSecondMoment=t.slice(e,e*2).map(s=>({originalName:s.name,variable:s.tensor.variable(r)}))}getConfig(){return{learningRate:this.learningRate,beta1:this.beta1,beta2:this.beta2,epsilon:this.epsilon}}static fromConfig(t,e){return new t(e.learningRate,e.beta1,e.beta2,e.epsilon)}}Fh.className="Adam",kt(Fh);class Rh extends ko{constructor(t,e,r,s=null,u=0){super();this.learningRate=t,this.beta1=e,this.beta2=r,this.epsilon=s,this.decay=u,this.accumulatedFirstMoment=[],this.accumulatedWeightedInfNorm=[],ot(()=>{this.iteration=Ot(0).variable(),this.accBeta1=Ot(e).variable()}),s==null&&(this.epsilon=J.backend.epsilon())}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);ot(()=>{let r=Mt(1,this.accBeta1),s=Ht(-this.learningRate,Nt(st(this.iteration,this.decay),1));e.forEach((u,l)=>{let h=J.registeredVariables[u],p=!1;this.accumulatedFirstMoment[l]==null&&(this.accumulatedFirstMoment[l]={originalName:`${u}/m`,variable:fe(h).variable(p)}),this.accumulatedWeightedInfNorm[l]==null&&(this.accumulatedWeightedInfNorm[l]={originalName:`${u}/v`,variable:fe(h).variable(p)});let m=Array.isArray(t)?t[l].tensor:t[u];if(m==null)return;let y=this.accumulatedFirstMoment[l].variable,b=this.accumulatedWeightedInfNorm[l].variable,x=Nt(st(y,this.beta1),st(m,1-this.beta1)),S=st(b,this.beta2),C=kn(m),I=ts(S,C);y.assign(x),b.assign(I);let D=Nt(st(Ht(s,r),Ht(x,Nt(I,this.epsilon))),h);h.assign(D)}),this.iteration.assign(Nt(this.iteration,1)),this.accBeta1.assign(st(this.accBeta1,this.beta1))}),this.incrementIterations()}dispose(){this.accBeta1.dispose(),this.iteration.dispose(),this.accumulatedFirstMoment!=null&&oe(this.accumulatedFirstMoment.map(t=>t.variable)),this.accumulatedWeightedInfNorm!=null&&oe(this.accumulatedWeightedInfNorm.map(t=>t.variable))}async getWeights(){throw new Error("getWeights() is not implemented for Adamax yet.")}async setWeights(t){throw new Error("setWeights() is not implemented for Adamax yet.")}getConfig(){return{learningRate:this.learningRate,beta1:this.beta1,beta2:this.beta2,epsilon:this.epsilon,decay:this.decay}}static fromConfig(t,e){return new t(e.learningRate,e.beta1,e.beta2,e.epsilon,e.decay)}}Rh.className="Adamax",kt(Rh);class Uu extends ko{constructor(t){super();this.learningRate=t,this.setLearningRate(t)}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);e.forEach((r,s)=>{let u=Array.isArray(t)?t[s].tensor:t[r];if(u==null)return;let l=J.registeredVariables[r];ot(()=>{let h=Nt(st(this.c,u),l);l.assign(h)})}),this.incrementIterations()}setLearningRate(t){this.learningRate=t,this.c!=null&&this.c.dispose(),this.c=An(Ot(-t))}dispose(){this.c.dispose()}async getWeights(){return[await this.saveIterations()]}async setWeights(t){if(t=await this.extractIterations(t),t.length!==0)throw new Error("SGD optimizer does not have settable weights.")}getConfig(){return{learningRate:this.learningRate}}static fromConfig(t,e){return new t(e.learningRate)}}Uu.className="SGD",kt(Uu);class Ph extends Uu{constructor(t,e,r=!1){super(t);this.learningRate=t,this.momentum=e,this.useNesterov=r,this.accumulations=[],this.m=Ot(this.momentum)}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);e.forEach((r,s)=>{let u=J.registeredVariables[r];if(this.accumulations[s]==null){let p=!1;this.accumulations[s]={originalName:`${r}/momentum`,variable:ot(()=>fe(u).variable(p))}}let l=this.accumulations[s].variable,h=Array.isArray(t)?t[s].tensor:t[r];if(h==null)return;ot(()=>{let p,m=Nt(st(this.m,l),h);this.useNesterov?p=Nt(st(this.c,Nt(h,st(m,this.m))),u):p=Nt(st(this.c,m),u),l.assign(m),u.assign(p)})}),this.incrementIterations()}dispose(){this.m.dispose(),this.accumulations!=null&&oe(this.accumulations.map(t=>t.variable))}setMomentum(t){this.momentum=t}async getWeights(){return[await this.saveIterations()].concat(this.accumulations.map(t=>({name:t.originalName,tensor:t.variable})))}async setWeights(t){t=await this.extractIterations(t);let e=!1;this.accumulations=t.map(r=>({originalName:r.name,variable:r.tensor.variable(e)}))}getConfig(){return{learningRate:this.learningRate,momentum:this.momentum,useNesterov:this.useNesterov}}static fromConfig(t,e){return new t(e.learningRate,e.momentum,e.useNesterov)}}Ph.className="Momentum",kt(Ph);class Oh extends ko{constructor(t,e=.9,r=0,s=null,u=!1){super();if(this.learningRate=t,this.decay=e,this.momentum=r,this.epsilon=s,this.accumulatedMeanSquares=[],this.accumulatedMoments=[],this.accumulatedMeanGrads=[],this.centered=u,s==null&&(this.epsilon=J.backend.epsilon()),t==null)throw new Error("learningRate for RMSPropOptimizer must be defined.")}applyGradients(t){let e=Array.isArray(t)?t.map(r=>r.name):Object.keys(t);e.forEach((r,s)=>{let u=J.registeredVariables[r],l=!1;this.accumulatedMeanSquares[s]==null&&(this.accumulatedMeanSquares[s]={originalName:`${r}/rms`,variable:ot(()=>fe(u).variable(l))}),this.accumulatedMoments[s]==null&&(this.accumulatedMoments[s]={originalName:`${r}/momentum`,variable:ot(()=>fe(u).variable(l))}),this.accumulatedMeanGrads[s]==null&&this.centered&&(this.accumulatedMeanGrads[s]={originalName:`${r}/mg`,variable:ot(()=>fe(u).variable(l))});let h=Array.isArray(t)?t[s].tensor:t[r];if(h==null)return;let p=this.accumulatedMeanSquares[s].variable,m=this.accumulatedMoments[s].variable;ot(()=>{let y=Nt(st(p,this.decay),st(Oe(h),1-this.decay));if(this.centered){let b=this.accumulatedMeanGrads[s].variable,x=Nt(st(b,this.decay),st(h,1-this.decay)),S=Ht(st(h,this.learningRate),Wn(Mt(y,Nt(Oe(x),this.epsilon)))),C=Nt(st(m,this.momentum),S);p.assign(y),b.assign(x),m.assign(C);let I=Mt(u,C);u.assign(I)}else{let b=Nt(st(p,this.decay),st(Oe(h),1-this.decay)),x=Nt(st(m,this.momentum),Ht(st(h,this.learningRate),Wn(Nt(b,this.epsilon))));p.assign(b),m.assign(x);let S=Mt(u,x);u.assign(S)}})}),this.incrementIterations()}dispose(){this.accumulatedMeanSquares!=null&&oe(this.accumulatedMeanSquares.map(t=>t.variable)),this.accumulatedMeanGrads!=null&&this.centered&&oe(this.accumulatedMeanGrads.map(t=>t.variable)),this.accumulatedMoments!=null&&oe(this.accumulatedMoments.map(t=>t.variable))}async getWeights(){let t=[...this.accumulatedMeanSquares,...this.accumulatedMoments];return this.centered&&t.push(...this.accumulatedMeanGrads),[await this.saveIterations()].concat(t.map(e=>({name:e.originalName,tensor:e.variable})))}async setWeights(t){t=await this.extractIterations(t);let e=this.centered?t.length/3:t.length/2,r=!1;this.accumulatedMeanSquares=t.slice(0,e).map(s=>({originalName:s.name,variable:s.tensor.variable(r)})),this.accumulatedMoments=t.slice(e,e*2).map(s=>({originalName:s.name,variable:s.tensor.variable(r)})),this.centered&&(this.accumulatedMeanGrads=t.slice(e*2,e*3).map(s=>({originalName:s.name,variable:s.tensor.variable(r)})))}getConfig(){return{learningRate:this.learningRate,decay:this.decay,momentum:this.momentum,epsilon:this.epsilon,centered:this.centered}}static fromConfig(t,e){return new t(e.learningRate,e.decay,e.momentum,e.epsilon,e.centered)}}Oh.className="RMSProp",kt(Oh);class wi{static sgd(t){return new Uu(t)}static momentum(t,e,r=!1){return new Ph(t,e,r)}static rmsprop(t,e=.9,r=0,s=null,u=!1){return new Oh(t,e,r,s,u)}static adam(t=.001,e=.9,r=.999,s=null){return new Fh(t,e,r,s)}static adadelta(t=.001,e=.95,r=null){return new Ah(t,e,r)}static adamax(t=.002,e=.9,r=.999,s=null,u=0){return new Rh(t,e,r,s,u)}static adagrad(t,e=.1){return new _h(t,e)}}let xi={sgd:wi.sgd,momentum:wi.momentum,adadelta:wi.adadelta,adagrad:wi.adagrad,rmsprop:wi.rmsprop,adamax:wi.adamax,adam:wi.adam};let a4=(()=>typeof requestAnimationFrame!="undefined"?requestAnimationFrame:typeof setImmediate!="undefined"?setImmediate:n=>n())();function Hd(){return new Promise(n=>a4(()=>n()))}function Mb(n,t,e){let r=e*(typeof n=="number"?n:n[0]),s=t*(typeof n=="number"?n:n[1]);return[r,s]}function Mh(n,t,e,r=!0){let s=[];if(r)s=s.concat(t.slice(0)),s.push(n[0]/e),s=s.concat(n.slice(1));else{s=s.concat(n[0]);let u=t.length;for(let l=0;l<u;++l)s=s.concat([n[l+1]/t[l],t[l]]);s=s.concat(n.slice(u+1))}return s}function Lh(n,t,e=!0){let r=[];if(e){r.push(t);for(let s=t+1;s<n;++s)s<=2*t?(r.push(s),r.push(s-(t+1))):r.push(s)}else{let s=[],u=[];for(let l=1;l<n;++l)l>=t*2+1||l%2===1?u.push(l):s.push(l);r.push(...s),r.push(0),r.push(...u)}return r}function Bh(n,t,e,r=!0){let s=[];r?s.push(n[0]/e):s.push(n[0]*e);for(let u=1;u<n.length;++u)u<=t.length?r?s.push(t[u-1]*n[u]):s.push(n[u]/t[u-1]):s.push(n[u]);return s}function Lb(n,t){let e=[0];for(let r=0;r<t;++r)e.push(n[r][0]);return e}function Bb(n,t,e){let r=n.slice(0,1);for(let s=0;s<e;++s)r.push(n[s+1]-t[s][0]-t[s][1]);return r}let qd=1.7580993408473768,jd=1.0507009873554805;let zb=.3275911,Wb=.254829592,Vb=-.284496736,Ub=1.421413741,Gb=-1.453152027,Hb=1.061405429;function Gu(...n){ft().getBool("IS_TEST")||console.warn(...n)}function i4(...n){ft().getBool("IS_TEST")||console.log(...n)}function So(n,t){if(n.length!==t.length)throw new Error(`Cannot merge real and imag arrays of different lengths. real:${n.length}, imag: ${t.length}.`);let e=new Float32Array(n.length*2);for(let r=0;r<e.length;r+=2)e[r]=n[r/2],e[r+1]=t[r/2];return e}function LC(n){let t=new Float32Array(n.length/2),e=new Float32Array(n.length/2);for(let r=0;r<n.length;r+=2)t[r/2]=n[r],e[r/2]=n[r+1];return{real:t,imag:e}}function BC(n){let t=Math.ceil(n.length/4),e=new Float32Array(t),r=new Float32Array(t);for(let s=0;s<n.length;s+=4)e[Math.floor(s/4)]=n[s],r[Math.floor(s/4)]=n[s+1];return{real:e,imag:r}}function zC(n){let t=Math.floor(n.length/4),e=new Float32Array(t),r=new Float32Array(t);for(let s=2;s<n.length;s+=4)e[Math.floor(s/4)]=n[s],r[Math.floor(s/4)]=n[s+1];return{real:e,imag:r}}function qb(n,t){let e=n[t*2],r=n[t*2+1];return{real:e,imag:r}}function WC(n,t,e,r){n[r*2]=t,n[r*2+1]=e}function VC(n,t){let e=new Float32Array(n/2),r=new Float32Array(n/2);for(let s=0;s<Math.ceil(n/2);s++){let u=(t?2:-2)*Math.PI*(s/n);e[s]=Math.cos(u),r[s]=Math.sin(u)}return{real:e,imag:r}}function UC(n,t,e){let r=(e?2:-2)*Math.PI*(n/t),s=Math.cos(r),u=Math.sin(r);return{real:s,imag:u}}function u4(n,t,e){if(t==="complex64"){if(n.dtype==="complex64")return n.clone();let r=Se(n.shape),s=Rt(n,"float32"),u=e.complex(s,r);return r.dispose(),s.dispose(),u}if(!me(n.dtype,t))return J.makeTensorFromDataId(n.dataId,n.shape,t);if(n.dtype==="complex64"){let r=e.real(n),s=Rt(r,t);return r.dispose(),s}if(t==="int32")return e.int(n);if(t==="bool"){let r=Ot(0,n.dtype),s=e.notEqual(n,r);return r.dispose(),s}else throw new Error(`Error in Cast: failed to cast ${n.dtype} to ${t}`)}function GC(n,t){return J.makeTensorFromDataId(n.dataId,t,n.dtype)}function jb(n,t,e){let r=(t-n)/(e-1),s=fu(e,"float32");s[0]=n;for(let u=1;u<s.length;u++)s[u]=s[u-1]+r;return Ir(s,"float32")}var 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expected it to be 1 or ${n}`);if(n===5){if(e==="channelsFirst")return r.length===1?t.reshape([1,r[0],1,1,1]):t.reshape([1,r[3],r[0],r[1],r[2]]);if(e==="channelsLast")return r.length===1?t.reshape([1,1,1,1,r[0]]):t.reshape([1].concat(r))}else if(n===4){if(e==="channelsFirst")return r.length===1?t.reshape([1,r[0],1,1]):t.reshape([1,r[2],r[0],r[1]]);if(e==="channelsLast")return r.length===1?t.reshape([1,1,1,r[0]]):t.reshape([1].concat(r))}else if(n===3){if(e==="channelsFirst")return r.length===1?t.reshape([1,r[0],1]):t.reshape([1,r[1],r[0]]);if(e==="channelsLast")return r.length===1?t.reshape([1,1,r[0]]):t.reshape([1].concat(r))}else if(n<3)return t;throw new Q(`Unsupported input rank by biasAdd: ${t.rank}`)}function Qs(n,t,e){return ot(()=>(e==null&&(e=ws()),un(e),n.add(lw(n.rank,t,e))))}function IV(n,t=1){if(t!==1)throw new Zt(`Support for alpha values other than 1 (${t}) is not implemented yet.`);return $u(n)}function EV(n){return ot(()=>Ht(n,kn(n).add(1)))}function fN(n,t,e,r){return ot(()=>NC(n,t,e,r))}function DV(n){return ot(()=>{let t=Nt(.5,st(.2,n));return fr(t,0,1)})}function qh(n,t,e=!1){return e?n():t()}let $V=["fanIn","fanOut","fanAvg"],AV=["normal","uniform","truncatedNormal"],Eht=["Zeros","Ones","Constant","RandomNormal","RandomUniform","TruncatedNormal","VarianceScaling","Orthogonal","Identity"];function _V(n){Hu($V,"FanMode",n)}function FV(n){Hu(AV,"Distribution",n)}class ss extends li{fromConfigUsesCustomObjects(){return!1}getConfig(){return{}}}class hw extends ss{apply(t,e){return Se(t,e)}}hw.className="Zeros",kt(hw);class Qd extends ss{apply(t,e){return vs(t,e)}}Qd.className="Ones",kt(Qd);class fw extends ss{constructor(t){super();if(typeof t!="object")throw new Q(`Expected argument of type ConstantConfig but got ${t}`);if(t.value===void 0)throw new Q(`config must have value set but got ${t}`);this.value=t.value}apply(t,e){return ot(()=>st(Ot(this.value),vs(t,e)))}getConfig(){return{value:this.value}}}fw.className="Constant",kt(fw);class pw extends ss{constructor(t){super();this.DEFAULT_MINVAL=-.05,this.DEFAULT_MAXVAL=.05,this.minval=t.minval||this.DEFAULT_MINVAL,this.maxval=t.maxval||this.DEFAULT_MAXVAL,this.seed=t.seed}apply(t,e){return yi(t,this.minval,this.maxval,e)}getConfig(){return{minval:this.minval,maxval:this.maxval,seed:this.seed}}}pw.className="RandomUniform",kt(pw);class dw extends ss{constructor(t){super();this.DEFAULT_MEAN=0,this.DEFAULT_STDDEV=.05,this.mean=t.mean||this.DEFAULT_MEAN,this.stddev=t.stddev||this.DEFAULT_STDDEV,this.seed=t.seed}apply(t,e){if(e=e||"float32",e!=="float32"&&e!=="int32")throw new Zt(`randomNormal does not support dType ${e}.`);return Zd(t,this.mean,this.stddev,e,this.seed)}getConfig(){return{mean:this.mean,stddev:this.stddev,seed:this.seed}}}dw.className="RandomNormal",kt(dw);class mw extends ss{constructor(t){super();this.DEFAULT_MEAN=0,this.DEFAULT_STDDEV=.05,this.mean=t.mean||this.DEFAULT_MEAN,this.stddev=t.stddev||this.DEFAULT_STDDEV,this.seed=t.seed}apply(t,e){if(e=e||"float32",e!=="float32"&&e!=="int32")throw new Zt(`truncatedNormal does not support dType ${e}.`);return $h(t,this.mean,this.stddev,e,this.seed)}getConfig(){return{mean:this.mean,stddev:this.stddev,seed:this.seed}}}mw.className="TruncatedNormal",kt(mw);class gw extends ss{constructor(t){super();this.gain=t.gain!=null?t.gain:1}apply(t,e){return ot(()=>{if(t.length!==2||t[0]!==t[1])throw new Q("Identity matrix initializer can only be used for 2D square matrices.");return st(this.gain,yd(t[0]))})}getConfig(){return{gain:this.gain}}}gw.className="Identity",kt(gw);function RV(n,t="channelsLast"){let e,r;if(un(t),n.length===2)e=n[0],r=n[1];else if([3,4,5].indexOf(n.length)!==-1){if(t==="channelsFirst"){let s=ga(n,2);e=n[1]*s,r=n[0]*s}else if(t==="channelsLast"){let s=ga(n,0,n.length-2);e=n[n.length-2]*s,r=n[n.length-1]*s}}else{let s=ga(n);e=Math.sqrt(s),r=Math.sqrt(s)}return[e,r]}class vr extends ss{constructor(t){super();if(t.scale<0)throw new Q(`scale must be a positive float. Got: ${t.scale}`);this.scale=t.scale==null?1:t.scale,this.mode=t.mode==null?"fanIn":t.mode,_V(this.mode),this.distribution=t.distribution==null?"normal":t.distribution,FV(this.distribution),this.seed=t.seed}apply(t,e){let r=RV(t),s=r[0],u=r[1],l=this.scale;if(this.mode==="fanIn"?l/=Math.max(1,s):this.mode==="fanOut"?l/=Math.max(1,u):l/=Math.max(1,(s+u)/2),this.distribution==="normal"){let h=Math.sqrt(l);if(e=e||"float32",e!=="float32"&&e!=="int32")throw new Zt(`${this.getClassName()} does not support dType ${e}.`);return $h(t,0,h,e,this.seed)}else{let h=Math.sqrt(3*l);return yi(t,-h,h,e)}}getConfig(){return{scale:this.scale,mode:this.mode,distribution:this.distribution,seed:this.seed}}}vr.className="VarianceScaling",kt(vr);class tm extends vr{constructor(t){super({scale:1,mode:"fanAvg",distribution:"uniform",seed:t==null?null:t.seed})}getClassName(){return vr.className}}tm.className="GlorotUniform",kt(tm);class em extends vr{constructor(t){super({scale:1,mode:"fanAvg",distribution:"normal",seed:t==null?null:t.seed})}getClassName(){return vr.className}}em.className="GlorotNormal",kt(em);class nm extends vr{constructor(t){super({scale:2,mode:"fanIn",distribution:"normal",seed:t==null?null:t.seed})}getClassName(){return vr.className}}nm.className="HeNormal",kt(nm);class rm extends vr{constructor(t){super({scale:2,mode:"fanIn",distribution:"uniform",seed:t==null?null:t.seed})}getClassName(){return vr.className}}rm.className="HeUniform",kt(rm);class sm extends vr{constructor(t){super({scale:1,mode:"fanIn",distribution:"normal",seed:t==null?null:t.seed})}getClassName(){return vr.className}}sm.className="LeCunNormal",kt(sm);class om extends vr{constructor(t){super({scale:1,mode:"fanIn",distribution:"uniform",seed:t==null?null:t.seed})}getClassName(){return vr.className}}om.className="LeCunNormal",kt(om);class vw extends ss{constructor(t){super();if(this.DEFAULT_GAIN=1,this.gain=t.gain==null?this.DEFAULT_GAIN:t.gain,this.seed=t.seed,this.seed!=null)throw new Zt("Random seed is not implemented for Orthogonal Initializer yet.")}apply(t,e){return ot(()=>{if(t.length<2)throw new Zt("Shape must be at least 2D.");t[0]*t[1]>2e3&&console.warn(`Orthogonal initializer is being called on a matrix with more than 2000 (${t[0]*t[1]}) elements: Slowness may result.`);let r=t[0]>t[1]?[t[1],t[0]]:t,s=Zd(r,0,1,"float32"),u=MC.gramSchmidt(s);return t[0]>t[1]&&(u=u.transpose()),st(this.gain,u)})}getConfig(){return{gain:this.gain,seed:this.seed}}}vw.className="Orthogonal",kt(vw);let pN={constant:"Constant",glorotNormal:"GlorotNormal",glorotUniform:"GlorotUniform",heNormal:"HeNormal",heUniform:"HeUniform",identity:"Identity",leCunNormal:"LeCunNormal",leCunUniform:"LeCunUniform",ones:"Ones",orthogonal:"Orthogonal",randomNormal:"RandomNormal",randomUniform:"RandomUniform",truncatedNormal:"TruncatedNormal",varianceScaling:"VarianceScaling",zeros:"Zeros"};function dN(n,t={}){return zh(n,Lr.getMap().classNameMap,t,"initializer")}function cn(n){return Qb(n)}function Xe(n){if(typeof n=="string"){let t=n in pN?pN[n]:n;if(t==="GlorotNormal")return new em;if(t==="GlorotUniform")return new tm;if(t==="HeNormal")return new nm;if(t==="HeUniform")return new rm;if(t==="LeCunNormal")return new sm;if(t==="LeCunUniform")return new om;{let e={};return e.className=t,e.config={},dN(e)}}else return n instanceof ss?n:dN(n)}function PV(){return new hw}function OV(){return new Qd}function MV(n){return new fw(n)}function LV(n){return new pw(n)}function BV(n){return new dw(n)}function zV(n){return new mw(n)}function WV(n){return new gw(n)}function VV(n){return new vr(n)}function UV(n){return new tm(n)}function GV(n){return new em(n)}function HV(n){return new nm(n)}function qV(n){return new rm(n)}function jV(n){return new sm(n)}function KV(n){return new om(n)}function XV(n){return new vw(n)}var YV=Object.freeze({__proto__:null,zeros:PV,ones:OV,constant:MV,randomUniform:LV,randomNormal:BV,truncatedNormal:zV,identity:WV,varianceScaling:VV,glorotUniform:UV,glorotNormal:GV,heNormal:HV,heUniform:qV,leCunNormal:jV,leCunUniform:KV,orthogonal:XV});let JV=0;function mN(){return JV++}let am={};function im(n=""){return n in am||(am[n]=0),am[n]+=1,n+am[n].toString()}function yw(n){return Array.isArray(n)&&Array.isArray(n[0])}function um(n){return n.length===0?[]:Array.isArray(n[0])?n:[n]}function le(n){let t;if(Array.isArray(n)){if(n.length!==1)throw new Q(`Expected Tensor length to be 1; got ${n.length}`);t=n[0]}else t=n;return t}function Be(n){if(Array.isArray(n)&&Array.isArray(n[0])){if(n.length===1)return n=n,n[0];throw new Q(`Expected exactly 1 Shape; got ${n.length}`)}else return n}function cm(n){let t=0;for(let e of n)e.shape.length===0?t+=1:t+=e.shape.reduce((r,s)=>r*s);return t}let gN="Variable";class Ts{constructor(t,e="float32",r=gN,s=!0,u=null){this.dtype=e==null?"float32":e,this.shape=t.shape,this.id=mN(),r=r==null?gN:r,this.originalName=aN(r),this.name=iN(this.originalName),this.trainable_=s,this.constraint=u,this.val=iC(t,this.trainable_,this.name,this.dtype)}read(){return this.assertNotDisposed(),this.val}write(t){return this.assertNotDisposed(),ZV(this.val,t),this.val.id!==t.id&&(this.val.assign(t),this.constraint!=null&&this.val.assign(this.constraint.apply(this.val))),this}dispose(){this.assertNotDisposed(),this.val.dispose()}assertNotDisposed(){if(this.val.isDisposed)throw new Error(`LayersVariable ${this.name} is already disposed.`)}get trainable(){return this.trainable_}set trainable(t){this.trainable_=t,this.val.trainable=t}}function ZV(n,t){if(n.shape.toString()!==t.shape.toString())throw new Error("Shape mismatch: "+JSON.stringify(n.shape)+" vs. "+JSON.stringify(t.shape))}function Dht(n,t,e,r){return new Ts(n,t,e,!0,r)}function $ht(n,t,e){return new Ts(Se(n),t,e)}function Aht(n,t,e){return new Ts(fe(n),t,e)}function _ht(n,t,e){let r=vs(n);return new Ts(r,t,e)}function Fht(n,t,e){let r=Xn(n);return new Ts(r,t,e)}function Rht(n,t,e){return new Ts(yd(n),t,e)}function Pht(n,t,e,r,s,u="randomUniform"){return new Ts(yi(n,t,e,r),r,u)}function Oht(n,t=0,e=1,r,s,u="truncatedNormal"){if(r=r||"float32",r!=="float32"&&r!=="int32")throw new Zt(`randomNormal does not support dType ${r}.`);return new Ts($h(n,t,e,r,s),r,u)}function Mht(n,t=0,e=1,r,s,u="randomNormal"){if(r=r||"float32",r!=="float32"&&r!=="int32")throw new Zt(`randomNormalVariable does not support dType ${r}.`);return new Ts(wb(n,t,e,r,s),r,u)}function Lht(n,t){return n.write(t)}function Bht(n,t){return n.write(Nt(n.read(),t))}function zht(n,t){return n.write(Mt(n.read(),t))}function bw(n){return n.map(t=>t.read())}function ww(n){n.forEach(t=>{let e=t[0];e.write(t[1])})}function Wht(n,t){let e=t.map(s=>s.read()),r=db(n,e);return t.map(s=>r.grads[s.name])}class Fn{constructor(t){this.dtype=t.dtype,this.shape=t.shape,t.shape!=null?this.ndim=t.shape.length:this.ndim=t.ndim,this.maxNDim=t.maxNDim,this.minNDim=t.minNDim,this.axes=t.axes||{}}}class ks{constructor(t,e,r,s,u,l,h){this.dtype=t,this.shape=e,this.sourceLayer=r,this.inputs=s,this.callArgs=u,this.outputTensorIndex=h,this.id=mN(),l!=null&&(this.originalName=aN(l),this.name=iN(this.originalName)),this.rank=e.length}}let QV=0;class lm{constructor(t,e){this.callArgs=e,this.id=QV++,this.outboundLayer=t.outboundLayer,this.inboundLayers=t.inboundLayers,this.nodeIndices=t.nodeIndices,this.tensorIndices=t.tensorIndices,this.inputTensors=t.inputTensors,this.outputTensors=t.outputTensors,this.inputMasks=t.inputMasks,this.outputMasks=t.outputMasks,this.inputShapes=t.inputShapes,this.outputShapes=t.outputShapes;for(let r of t.inboundLayers)r!=null&&r.outboundNodes.push(this);t.outboundLayer.inboundNodes.push(this)}getConfig(){let t=[];for(let e of this.inboundLayers)e!=null?t.push(e.name):t.push(null);return{outboundLayer:this.outboundLayer?this.outboundLayer.name:null,inboundLayers:t,nodeIndices:this.nodeIndices,tensorIndices:this.tensorIndices}}}let tU=0;class Te extends li{constructor(t={}){super();this._callHook=null,this._addedWeightNames=[],this._stateful=!1,this.id=tU++,this.activityRegularizer=null,this.inputSpec=null,this.supportsMasking=!1,this._trainableWeights=[],this._nonTrainableWeights=[],this._losses=[],this._updates=[],this._built=!1,this.inboundNodes=[],this.outboundNodes=[];let e=t.name;if(!e){let r=this.getClassName();e=Co(r)+"_"+im(r)}if(this.name=e,this.trainable_=t.trainable==null?!0:t.trainable,t.inputShape!=null||t.batchInputShape!=null){let r;if(t.batchInputShape!=null)r=t.batchInputShape;else if(t.inputShape!=null){let u=null;t.batchSize!=null&&(u=t.batchSize),r=[u].concat(t.inputShape)}this.batchInputShape=r;let s=t.dtype;s==null&&(s=t.inputDType),s==null&&(s="float32"),this.dtype=s}t.weights!=null?this.initialWeights=t.weights:this.initialWeights=null,this._refCount=null,this.fastWeightInitDuringBuild=!1}static nodeKey(t,e){return t.name+"_ib-"+e.toString()}getNodeAtIndex(t,e){if(this.inboundNodes.length===0)throw new ns(`The layer has never been called and thus has no defined ${e}.`);if(this.inboundNodes.length<=t)throw new Q(`Asked to get ${e} at node ${t}, but the layer has only ${this.inboundNodes.length} inbound nodes.`);return this.inboundNodes[t]}getInputAt(t){return gr(this.getNodeAtIndex(t,"input").inputTensors)}getOutputAt(t){return gr(this.getNodeAtIndex(t,"output").outputTensors)}get input(){if(this.inboundNodes.length>1)throw new Js(`Layer ${this.name} has multiple inbound nodes, hence the notion of "layer input" is ill-defined. Use \`getInputAt(nodeIndex)\` instead.`);if(this.inboundNodes.length===0)throw new Js(`Layer ${this.name} is not connected, no input to return.`);return gr(this.getNodeAtIndex(0,"input").inputTensors)}get output(){if(this.inboundNodes.length===0)throw new Js(`Layer ${this.name} has no inbound nodes.`);if(this.inboundNodes.length>1)throw new Js(`Layer ${this.name} has multiple inbound nodes, hence the notion of "layer output" is ill-defined. Use \`getOutputAt(nodeIndex)\` instead.`);return gr(this.getNodeAtIndex(0,"output").outputTensors)}get losses(){return this._losses}calculateLosses(){return this.losses.map(t=>t())}get updates(){return this._updates}get built(){return this._built}set built(t){this._built=t}get trainable(){return this.trainable_}set trainable(t){this._trainableWeights.forEach(e=>e.trainable=t),this.trainable_=t}get trainableWeights(){return this.trainable_?this._trainableWeights.filter(t=>t.trainable):[]}set trainableWeights(t){this._trainableWeights=t}get nonTrainableWeights(){return this.trainable?this._trainableWeights.filter(t=>!t.trainable).concat(this._nonTrainableWeights):this._trainableWeights.concat(this._nonTrainableWeights)}set nonTrainableWeights(t){this._nonTrainableWeights=t}get weights(){return this.trainableWeights.concat(this.nonTrainableWeights)}get stateful(){return this._stateful}resetStates(){if(!this.stateful)throw new Error("Cannot call the resetStates() method of a non-stateful Layer object.")}assertInputCompatibility(t){if(t=Ge(t),this.inputSpec==null||this.inputSpec.length===0)return;let e=Ge(this.inputSpec);if(t.length!==e.length)throw new Q(`Layer ${this.name} expects ${e.length} inputs, but it received ${t.length} input tensors. Input received: ${t}`);for(let r=0;r<t.length;r++){let s=t[r],u=e[r];if(u==null)continue;let l=s.rank;if(u.ndim!=null&&l!==u.ndim)throw new Q(`Input ${r} is incompatible with layer ${this.name}: expected ndim=${u.ndim}, found ndim=${l}`);if(u.maxNDim!=null&&l>u.maxNDim)throw new Q(`Input ${r} is incompatible with layer ${this.name}: expected max_ndim=${u.maxNDim}, found ndim=${l}`);if(u.minNDim!=null&&l<u.minNDim)throw new Q(`Input ${r} is incompatible with layer ${this.name}: expected min_ndim=${u.minNDim}, found ndim=${l}.`);if(u.dtype!=null&&s.dtype!==u.dtype)throw new Q(`Input ${r} is incompatible with layer ${this.name} : expected dtype=${u.dtype}, found dtype=${s.dtype}.`);if(u.axes){let h=s.shape;for(let p in u.axes){let m=Number(p),y=u.axes[p],b=m>=0?h[m]:h[h.length+m];if(y!=null&&[y,null].indexOf(b)===-1)throw new Q(`Input ${r} is incompatible with layer ${this.name}: expected axis ${m} of input shape to have value ${y} but got shape ${h}.`)}}if(u.shape!=null)for(let h=0;h<u.shape.length;++h){let p=u.shape[h],m=s.shape[h];if(p!=null&&m!=null&&p!==m)throw new Q(`Input ${r} is incompatible with layer ${this.name}: expected shape=${u.shape}, found shape=${s.shape}.`)}}}call(t,e){return t}invokeCallHook(t,e){this._callHook!=null&&this._callHook(t,e)}setCallHook(t){this._callHook=t}clearCallHook(){this._callHook=null}apply(t,e){e=e||{},this.assertNotDisposed();let r=Ge(t),s=!0;for(let l of r)if(!(l instanceof ks)){s=!1;break}let u=!0;for(let l of r)if(l instanceof ks){u=!1;break}if(s===u)throw new Q("Arguments to apply() must be all SymbolicTensors or all Tensors");return Si(this.name,()=>{if(!this.built){this.assertInputCompatibility(t);let l=[];for(let h of Ge(t))l.push(h.shape);this.build(gr(l)),this.built=!0,this.initialWeights&&this.setWeights(this.initialWeights),this._refCount===null&&u&&(this._refCount=1)}if(this.assertInputCompatibility(t),u){let l=this.call(t,e),h=Ge(l),p=[];for(let m of h)r.indexOf(m)!==-1&&(m=m.clone()),p.push(m);if(l=gr(p),this.activityRegularizer!=null)throw new Zt("Layer invocation in the presence of activity regularizer(s) is not supported yet.");return l}else{let l=eU(t),h=this.computeOutputShape(l),p,m=nU(t);if(this.warnOnIncompatibleInputShape(Array.isArray(t)?l[0]:l),h!=null&&h.length>0&&Array.isArray(h[0])?p=h.map((y,b)=>new ks(m,y,this,Ge(t),e,this.name,b)):p=new ks(m,h,this,Ge(t),e,this.name),this.addInboundNode(t,p,null,null,l,h,e),this._refCount++,this.activityRegularizer!=null)throw new Zt("Layer invocation in the presence of activity regularizer(s) is not supported yet.");return p}})}warnOnIncompatibleInputShape(t){if(this.batchInputShape==null)return;if(t.length!==this.batchInputShape.length)console.warn(`The rank of the input tensor provided (shape: ${JSON.stringify(t)}) does not match that of the batchInputShape (${JSON.stringify(this.batchInputShape)}) of the layer ${this.name}`);else{let e=!1;this.batchInputShape.forEach((r,s)=>{r!=null&&t[s]!=null&&t[s]!==r&&(e=!0)}),e&&console.warn(`The shape of the input tensor (${JSON.stringify(t)}) does not match the expectation of layer ${this.name}: ${JSON.stringify(this.batchInputShape)}`)}}get outputShape(){if(this.inboundNodes==null||this.inboundNodes.length===0)throw new Js(`The layer ${this.name} has never been called and thus has no defined output shape.`);let t=[];for(let e of this.inboundNodes){let r=JSON.stringify(e.outputShapes);t.indexOf(r)===-1&&t.push(r)}if(t.length===1){let e=this.inboundNodes[0].outputShapes;return Array.isArray(e)&&Array.isArray(e[0])&&e.length===1?e[0]:e}else throw new Js(`The layer ${this.name} has multiple inbound nodes with different output shapes. Hence the notion of "output shape" is ill-defined for the layer.`)}countParams(){if(!this.built)throw new ns(`You tried to call countParams() on ${this.name}, but the layer is not built yet. Build it first by calling build(batchInputShape).`);return cm(this.weights)}build(t){this.built=!0}getWeights(t=!1){return bw(t?this.trainableWeights:this.weights)}setWeights(t){ot(()=>{let e=this.weights;if(e.length!==t.length)throw new Q(`You called setWeights(weights) on layer "${this.name}" with a weight list of length ${t.length}, but the layer was expecting ${e.length} weights. Provided weights: ${t}...`);if(e.length===0)return;let r=[],s=bw(e);for(let u=0;u<s.length;++u){let l=s[u],h=e[u],p=t[u];if(!K(l.shape,p.shape))throw new Q(`Layer weight shape ${l.shape} not compatible with provided weight shape ${p.shape}`);r.push([h,p])}ww(r)})}addWeight(t,e,r,s,u,l,h){if(this._addedWeightNames.indexOf(t)!==-1)throw new Q(`Duplicate weight name ${t} for layer ${this.name}`);this._addedWeightNames.push(t),r==null&&(r="float32"),this.fastWeightInitDuringBuild&&(s=Xe("zeros"));let p=s.apply(e,r),m=new Ts(p,r,t,l,h);return p.dispose(),u!=null&&this.addLoss(()=>u.apply(m.read())),l==null&&(l=!0),l?this._trainableWeights.push(m):this._nonTrainableWeights.push(m),m}setFastWeightInitDuringBuild(t){this.fastWeightInitDuringBuild=t}addLoss(t){if(t==null||Array.isArray(t)&&t.length===0)return;t=Ge(t),this._losses!==void 0&&this._losses!==null&&this.losses.push(...t)}computeOutputShape(t){return t}computeMask(t,e){if(!this.supportsMasking){if(e!=null)if(Array.isArray(e))e.forEach(r=>{if(r!=null)throw new TypeError(`Layer ${this.name} does not support masking, but was passed an inputMask.`)});else throw new TypeError(`Layer ${this.name} does not support masking, but was passed an inputMask.`);return null}return e}addInboundNode(t,e,r,s,u,l,h=null){let p=Ge(t);e=Ge(e),r=Ge(r),s=Ge(s),u=um(u),l=um(l);let m=[],y=[],b=[];for(let x of p)m.push(x.sourceLayer),y.push(x.nodeIndex),b.push(x.tensorIndex);new lm({outboundLayer:this,inboundLayers:m,nodeIndices:y,tensorIndices:b,inputTensors:p,outputTensors:e,inputMasks:r,outputMasks:s,inputShapes:u,outputShapes:l},h);for(let x=0;x<e.length;x++)e[x].sourceLayer=this,e[x].nodeIndex=this.inboundNodes.length-1,e[x].tensorIndex=x}getConfig(){let t={name:this.name,trainable:this.trainable};return this.batchInputShape!=null&&(t.batchInputShape=this.batchInputShape),this.dtype!=null&&(t.dtype=this.dtype),t}disposeWeights(){return this.weights.forEach(t=>t.dispose()),this.weights.length}assertNotDisposed(){if(this._refCount===0)throw new Error(`Layer '${this.name}' is already disposed.`)}dispose(){if(!this.built)throw new Error(`Cannot dispose Layer ${this.name} because it has not been built yet.`);if(this._refCount===null)throw new Error(`Cannot dispose Layer ${this.name} because it has not been used yet.`);this.assertNotDisposed();let t=0;return--this._refCount===0&&(t=this.disposeWeights()),{refCountAfterDispose:this._refCount,numDisposedVariables:t}}}function eU(n){n=Ge(n);let t=[];for(let e of n)t.push(e.shape);return gr(t)}function nU(n){return"float32"}function vN(n,t,e){if((t==null||e!=null&&e>0)&&(t=n.sourceLayer,e=n.nodeIndex),t.inboundNodes.length===0)return[n];{let r=t.inboundNodes[e];if(r.inboundLayers.length===0)return r.inputTensors;{let s=[];for(let u=0;u<r.inboundLayers.length;u++){let l=r.inputTensors[u],h=r.inboundLayers[u],p=r.nodeIndices[u],m=vN(l,h,p);for(let y of m)s.indexOf(y)===-1&&s.push(y)}return s}}}class Ku extends Te{constructor(t){super({dtype:t.dtype,name:t.name!=null?t.name:im("input").toString()});if(t.batchSize==null&&(t.batchSize=null),t.sparse==null&&(t.sparse=!1),this.trainable=!1,this.built=!0,this.sparse=t.sparse,t.inputShape!=null&&t.batchInputShape!=null)throw new Q("Only provide the inputShape OR batchInputShape argument to inputLayer, not both at the same time.");let e=t.batchInputShape;if(e==null){if(t.inputShape==null)throw new Q("An InputLayer should be passed either a `batchInputShape` or an `inputShape`.");e=[t.batchSize].concat(t.inputShape)}else if(t.batchSize!=null)throw new Q("Cannot specify batchSize if batchInputShape is specified when creating an InputLayer.");let r=t.dtype||"float32";this.batchInputShape=e,this.dtype=r,this.inputSpec=[{shape:e}];let s=new ks(this.dtype,this.batchInputShape,this,[],{},this.name);s.nodeIndex=0,s.tensorIndex=0,new lm({outboundLayer:this,inboundLayers:[],nodeIndices:[],tensorIndices:[],inputTensors:[s],outputTensors:[s],inputMasks:[null],outputMasks:[null],inputShapes:[e],outputShapes:[e]})}apply(t,e){throw new Q(`Cannot pass any input to an InputLayer's apply() method. InputLayer name: ${this.name}`)}dispose(){return{refCountAfterDispose:this._refCount,numDisposedVariables:0}}getConfig(){return{batchInputShape:this.batchInputShape,dtype:this.dtype,sparse:this.sparse,name:this.name}}}Ku.className="InputLayer",kt(Ku);function yN(n){if(n.batchShape==null&&n.shape==null)throw new Error("Please provide to Input either a `shape` or a `batchShape` argument. Note that `shape` does not include the batch dimension.");if(n.batchShape!=null&&n.shape!=null)throw new Q("Please provide either a `shape` or `batchShape` argument to Input, but not both.");let t=n.batchShape;n.shape!=null&&t==null&&(t=[null].concat(n.shape));let e=n.dtype;e==null&&(e="float32");let r=new Ku({batchInputShape:t,name:n.name,dtype:e,sparse:n.sparse}),s=r.inboundNodes[0].outputTensors;return s[0]}async function ya(n){if(n==null)return;let t=[],e=[],r=[];for(let s in n){let u=n[s];if(typeof u!="number"){let l=u;t.push(l.data()),e.push(s),r.push(l)}}if(t.length>0){let s=await Promise.all(t);for(let u=0;u<s.length;++u)n[e[u]]=s[u][0];oe(r)}}function bN(n){if(n==null)return;for(let t in n){let e=n[t];typeof e!="number"&&e.dispose()}}var wN;(function(n){n[n.SILENT=0]="SILENT",n[n.VERBOSE=1]="VERBOSE"})(wN||(wN={}));let rU=125;class Xu{constructor(){this.validationData=null}setParams(t){this.params=t}async onEpochBegin(t,e){}async onEpochEnd(t,e){}async onBatchBegin(t,e){}async onBatchEnd(t,e){}async onTrainBegin(t){}async onTrainEnd(t){}setModel(t){}}class xN{constructor(t,e=10){t==null&&(t=[]),this.callbacks=t,this.queueLength=e}append(t){this.callbacks.push(t)}setParams(t){for(let e of this.callbacks)e.setParams(t)}setModel(t){for(let e of this.callbacks)e.setModel(t)}async onEpochBegin(t,e){e==null&&(e={});for(let r of this.callbacks)await r.onEpochBegin(t,e)}async onEpochEnd(t,e){e==null&&(e={});for(let r of this.callbacks)await r.onEpochEnd(t,e)}async onBatchBegin(t,e){e==null&&(e={});for(let r of this.callbacks)await r.onBatchBegin(t,e)}async onBatchEnd(t,e){e==null&&(e={});for(let r of this.callbacks)await r.onBatchEnd(t,e)}async onTrainBegin(t){t==null&&(t={});for(let e of this.callbacks)await e.onTrainBegin(t)}async onTrainEnd(t){t==null&&(t={});for(let e of this.callbacks)await e.onTrainEnd(t)}}class sU extends Xu{constructor(){super()}async onEpochBegin(t){this.seen=0,this.totals={}}async onBatchEnd(t,e){e==null&&(e={});let r=e.size==null?0:e.size;this.seen+=r;for(let s in e){let u=e[s];if(typeof u=="number")this.totals.hasOwnProperty(s)||(this.totals[s]=0),this.totals[s]=this.totals[s]+u*r;else{let l;s in this.totals?l=this.totals[s]:this.totals[s]=0;let h=ot(()=>Nt(this.totals[s],st(u,r)));this.totals[s]=h,l!=null&&l.dispose()}}}async onEpochEnd(t,e){if(e!=null)for(let r of this.params.metrics){if(this.totals[r]==null)continue;typeof this.totals[r]=="number"?e[r]=this.totals[r]/this.seen:ot(()=>{let s=st(Ht(1,this.seen),this.totals[r]);e[r]=s,this.totals[r].dispose(),An(e[r])})}}}class TN extends Xu{async onTrainBegin(t){this.epoch=[],this.history={}}async onEpochEnd(t,e){e==null&&(e={}),this.epoch.push(t);for(let r in e)this.history[r]==null&&(this.history[r]=[]),this.history[r].push(e[r])}async syncData(){let t=[],e=[],r=[];for(let u in this.history){let l=this.history[u];for(let h=0;h<l.length;++h)if(typeof l[h]!="number"){let p=l[h];t.push(p.data()),e.push(u),r.push(h)}}let s=await Promise.all(t);for(let u=0;u<s.length;++u){let l=this.history[e[u]][r[u]];l.dispose(),this.history[e[u]][r[u]]=s[u][0]}}}class kN extends Xu{constructor(t,e){super();if(this.currentEpoch=0,this.yieldEvery=e||"auto",this.yieldEvery==="auto"&&(this.yieldEvery=rU),this.yieldEvery==="never"&&t.onYield!=null)throw new Error("yieldEvery is `never` but you provided an `onYield` callback. Either change `yieldEvery` or remove the callback");Or(this.yieldEvery)&&(this.maybeWait=cV(this.maybeWait.bind(this),this.yieldEvery)),this.trainBegin=t.onTrainBegin,this.trainEnd=t.onTrainEnd,this.epochBegin=t.onEpochBegin,this.epochEnd=t.onEpochEnd,this.batchBegin=t.onBatchBegin,this.batchEnd=t.onBatchEnd,this.yield=t.onYield}async maybeWait(t,e,r){let s=[];this.yield!=null&&(await ya(r),s.push(this.yield(t,e,r))),s.push(Hd()),await Promise.all(s)}async onEpochBegin(t,e){this.currentEpoch=t,this.epochBegin!=null&&(await ya(e),await this.epochBegin(t,e))}async onEpochEnd(t,e){let r=[];this.epochEnd!=null&&(await ya(e),r.push(this.epochEnd(t,e))),this.yieldEvery==="epoch"&&r.push(Hd()),await Promise.all(r)}async onBatchBegin(t,e){this.batchBegin!=null&&(await ya(e),await this.batchBegin(t,e))}async onBatchEnd(t,e){let r=[];this.batchEnd!=null&&(await ya(e),r.push(this.batchEnd(t,e))),this.yieldEvery==="batch"?r.push(Hd()):Or(this.yieldEvery)&&r.push(this.maybeWait(this.currentEpoch,t,e)),await Promise.all(r)}async onTrainBegin(t){this.trainBegin!=null&&(await ya(t),await this.trainBegin(t))}async onTrainEnd(t){this.trainEnd!=null&&(await ya(t),await this.trainEnd(t))}}function SN(n,t){if(n==null&&(n={}),n instanceof Xu)return[n];if(Array.isArray(n)&&n[0]instanceof Xu)return n;let e=Ge(n);return e.map(r=>new kN(r,t))}class Gr{constructor(){}static registerCallbackConstructor(t,e){k(t>=0&&Number.isInteger(t),()=>`Verbosity level is expected to be an integer >= 0, but got ${t}`),Gr.checkForDuplicate(e),Gr.constructors[t]==null&&(Gr.constructors[t]=[]),Gr.constructors[t].push(e)}static checkForDuplicate(t){for(let e in Gr.constructors){let r=Gr.constructors[+e];r.forEach(s=>{if(s===t)throw new Q("Duplicate callback constructor.")})}}static clear(){Gr.constructors={}}static createCallbacks(t){let e=[];for(let r in Gr.constructors){let s=+r;t>=s&&e.push(...Gr.constructors[s])}return e.map(r=>new r)}}Gr.constructors={};function CN(n,t,e,r,s,u,l,h,p){let m=new TN,y=[new sU,...Gr.createCallbacks(t)];n!=null&&y.push(...n),y.push(m);let b=new xN(y);return b.setParams({epochs:e,initialEpoch:r,samples:s,steps:u,batchSize:l,verbose:t,doValidation:h,metrics:p}),{callbackList:b,history:m}}function Ss(n,t={},e=!1){return zh(n,Lr.getMap().classNameMap,t,"layer",e)}function hm(n,t){return ot(()=>{n.dtype!=="float32"&&(n=n.asType("float32"));let e=Xt(Hh(n),t,!0),r=Au(e.shape,Cn()),s=Wn(ts(e,r));return Ht(n,s)})}function No(n,t){return ot(()=>an(Hh(Mt(t,n)),-1))}function Yu(n,t){return ot(()=>an(kn(Mt(t,n)),-1))}function ba(n,t){return ot(()=>{let e=Mt(n,t),r=fr(kn(n),Cn(),Number.MAX_VALUE),s=kn(Ht(e,r));return st(100,an(s,-1))})}function xw(n,t){return ot(()=>{let e=fr(t,Cn(),Number.MAX_VALUE),r=Nr(Nt(1,e)),s=fr(n,Cn(),Number.MAX_VALUE),u=Nr(Nt(1,s));return an(Hh(Mt(r,u)),-1)})}function oU(n,t){return ot(()=>{let e=ts(0,Mt(1,st(n,t)));return an(Hh(e),-1)})}function aU(n,t){return ot(()=>{let e=ts(0,Mt(1,st(n,t)));return an(e,-1)})}function iU(n,t){return ot(()=>{let e=Xt(st(n,t),-1),r=dr(st(Mt(1,n),t),-1);return ts(0,Nt(1,Mt(r,e)))})}function uU(n,t){return ot(()=>{let e=Math.log(2),r=Mt(t,n),s=Mt(Nt(r,Ru(st(-2,r))),e);return an(s,-1)})}function jh(n,t,e=!1){return ot(()=>{if(e)t=bi(t);else{let r=Xt(t,t.shape.length-1,!0);t=Ht(t,r)}return t=fr(t,Cn(),1-Cn()),on(Xt(st(n.toFloat(),Nr(t)),t.shape.length-1))})}function fm(n,t,e=!1){return ot(()=>{let r=_u(CV(n)).toInt();t=fr(t,Cn(),1-Cn());let s=t.shape,u=ci(r,s[s.length-1]).reshape(s);return jh(u,t,e)})}function cU(n,t){if(!K(n.shape,t.shape))throw new Q(`logits and labels must have the same shape, but got shapes ${JSON.stringify(n.shape)} and ${JSON.stringify(t.shape)}`);return ot(()=>{let e=t.relu(),r=t.abs().neg();return e.sub(t.mul(n)).add(r.exp().log1p())})}function pm(n,t){return ot(()=>{let e;return e=fr(t,Cn(),1-Cn()),e=Nr(Ht(e,Mt(1,e))),an(cU(n,e),-1)})}function Tw(n,t){return ot(()=>{let e=fr(n,Cn(),1),r=fr(t,Cn(),1);return Xt(st(n,Nr(Ht(e,r))),-1)})}function lU(n,t){return ot(()=>{let e=Nr(Nt(Cn(),t));return an(Mt(t,st(n,e)),-1)})}function dm(n,t){return ot(()=>{let e=hm(n,-1),r=hm(t,-1),s=st(e,r);return on(Xt(s,-1))})}let Vht=No,Uht=No,Ght=Yu,Hht=Yu,qht=ba,jht=ba,Kht=xw,Xht=xw,Yht=Tw,Jht=Tw,Zht=dm,mm={meanSquaredError:No,meanAbsoluteError:Yu,meanAbsolutePercentageError:ba,meanSquaredLogarithmicError:xw,squaredHinge:oU,hinge:aU,categoricalHinge:iU,logcosh:uU,categoricalCrossentropy:jh,sparseCategoricalCrossentropy:fm,binaryCrossentropy:pm,kullbackLeiblerDivergence:Tw,poisson:lU,cosineProximity:dm};function kw(n){if(typeof n=="string"){if(n in mm)return mm[n];let t=`Unknown loss ${n}`;throw n.toLowerCase().includes("softmaxcrossentropy")&&(t=`Unknown loss ${n}. 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n.sourceLayer.inboundNodes[r].outputTensors)if(s.id===n.id){e=r;break}t=n.sourceLayer.getOutputAt(e)}return t}class Cs extends Te{constructor(t){super({});if(this.containerNodes=new Set,this.name=t.name,this.name==null){let A=this.getClassName().toLowerCase();this.name=im(A)}if(this.supportsMasking=!1,this.trainable_=!0,Array.isArray(t.inputs)?this.inputs=t.inputs.slice():this.inputs=[t.inputs],Array.isArray(t.outputs)?this.outputs=t.outputs.slice():this.outputs=[t.outputs],ma(this.inputs).length!==this.inputs.length)throw new Q(`The list of inputs passed to the model is redundant. All inputs should only appear once. Found: ${this.inputs.map(A=>A.name)}`);ma(this.outputs).length!==this.outputs.length&&console.warn(`The list of outputs passed to the model is redundant. All outputs should only appear once. Found: ${this.outputs.map(A=>A.name)}`),this.inputLayers=[],this.inputLayersNodeIndices=[],this.inputLayersTensorIndices=[],this.outputLayers=[],this.outputLayersNodeIndices=[],this.outputLayersTensorIndices=[],this.layers=[],this.internalContainerRefs=[];for(let A of this.outputs){let L=A.sourceLayer,_=A.nodeIndex,B=A.tensorIndex;this.outputLayers.push(L),this.outputLayersNodeIndices.push(_),this.outputLayersTensorIndices.push(B)}for(let A of this.inputs){let L=A.sourceLayer,_=A.nodeIndex,B=A.tensorIndex;Vr(_===0,"input layer has >1 nodes"),Vr(B===0,"input layer has >1 tensors"),this.inputLayers.push(L),this.inputLayersNodeIndices.push(_),this.inputLayersTensorIndices.push(B)}this.inputNames=[],this.outputNames=[],this.feedInputShapes=[],this.feedInputNames=[],this.feedOutputNames=[];for(let A=0;A<this.inputLayers.length;A++){let L=this.inputLayers[A];if(!(L instanceof Ku))throw new TypeError(`Input layers to a LayersModel must be InputLayer objects. Received inputs: ${t.inputs}. Input ${A} (0-based) originates from layer type ${L.getClassName()}.`);this.inputNames.push(L.name),this.feedInputShapes.push(L.batchInputShape),this.feedInputNames.push(L.name)}for(let A of this.outputLayers)this.outputNames.push(A.name);this.internalInputShapes=this.inputs.map(A=>A.shape),this.internalOutputShapes=this.outputs.map(A=>A.shape);let e={},r={},s={},u={},l={},h=[],p=(A,L,_,B,V,q)=>{(B==null||V==null||q==null)&&(B=A.sourceLayer,V=A.nodeIndex,q=A.tensorIndex);let j=B.inboundNodes[V];if(_.indexOf(j)!==-1)throw new ns(`The tensor ${A.name} at layer "${B.name}" is part of a cycle.`);if(L.indexOf(j)!==-1)return;this.containerNodes.add(Cs.nodeKey(B,V)),B.id in l||(l[B.id]=Object.keys(l).length),_.indexOf(j)===-1&&_.push(j);let et=j.inboundLayers.length;for(let tt=0;tt<et;tt++){let ht=j.inputTensors[tt],gt=j.inboundLayers[tt],vt=j.nodeIndices[tt],bt=j.tensorIndices[tt];p(ht,L,_,gt,vt,bt)}for(L.push(j);_.indexOf(j)>=0;)_.splice(_.indexOf(j),1);h.push(j)},m=[],y=[];for(let A of this.outputs)p(A,m,y);let b=h.slice().reverse();for(let A of b){r[A.id]=A,A.id in e||(e[A.id]=0);let L=e[A.id],_=s[A.outboundLayer.id]==null?0:s[A.outboundLayer.id];L=Math.max(L,_),s[A.outboundLayer.id]=L,u[A.outboundLayer.id]=A.outboundLayer,e[A.id]=L;for(let B=0;B<A.inboundLayers.length;B++){let V=A.inboundLayers[B],q=A.nodeIndices[B],j=V.inboundNodes[q],et=e[j.id]==null?0:e[j.id];e[j.id]=Math.max(L+1,et),r[j.id]=j}}let x={};for(let A in e){let L=e[A];L in x||(x[L]=[]),x[L].push(r[A])}let S={};for(let A in s){let L=s[A];L in S||(S[L]=[]),S[L].push(u[A])}let C=Object.keys(S).map(A=>parseInt(A,10)).sort(Xd);this.layers=[];for(let A of C){let L=S[A];L.sort((_,B)=>{let V=l[_.id],q=l[B.id];return V<q?-1:V>q?1:0});for(let _ of L)_ instanceof Cs&&this.internalContainerRefs.push(_),this.layers.push(_)}this.layersByDepth=S,C=Object.keys(x).map(A=>parseInt(A,10)).sort(Xd);let I=this.inputs.slice(),D=[];for(let A of C)for(let L of x[A]){let _=L.outboundLayer;if(_!=null){for(let B of L.inputTensors)if(I.indexOf(B)===-1)throw new ns(`Graph disconnected: cannot obtain value for tensor ${B} at layer "${_.name}". The following previous layers were accessed without issue: ${D}`);for(let B of L.outputTensors)I.push(B);D.push(_.name)}}this.nodesByDepth=x;let R=this.layers.map(A=>A.name);for(let A of R){let L=R.filter(_=>_===A).length;if(L!==1)throw new ns(`The name "${A}" is used ${L} times in the model. All layer names should be unique. Layer names: `+JSON.stringify(R))}this.outboundNodes=[],this.inboundNodes=[],new lm({outboundLayer:this,inboundLayers:[],nodeIndices:[],tensorIndices:[],inputTensors:this.inputs,outputTensors:this.outputs,inputMasks:this.inputs.map(A=>null),outputMasks:this.outputs.map(A=>null),inputShapes:this.inputs.map(A=>A.shape),outputShapes:this.outputs.map(A=>A.shape)}),this.built=!0,this._refCount=1}assertNotDisposed(){if(this._refCount===0)throw new Error(`Container '${this.name}' is already disposed.`)}dispose(){this.assertNotDisposed();let t={refCountAfterDispose:null,numDisposedVariables:0};if(--this._refCount===0){for(let e of this.layers)t.numDisposedVariables+=e.dispose().numDisposedVariables;for(let e of this.internalContainerRefs)t.numDisposedVariables+=e.dispose().numDisposedVariables}return t.refCountAfterDispose=this._refCount,t}get trainable(){return this.trainable_}set trainable(t){this.layers.forEach(e=>{e._trainableWeights.forEach(r=>r.trainable=t)}),this.trainable_=t}get trainableWeights(){if(this._trainableWeights.length>0)throw new Q("Container instance unexpectedly contains _trainableWeights.The trainable weights of a Container are a union of the trainable weights of its consituent Layers. Its own _trainableWeights must remain an empty Array.");if(!this.trainable)return[];let t=[];for(let e of this.layers)t=t.concat(e.trainableWeights);return t}get nonTrainableWeights(){let t=[];for(let e of this.layers)t.push(...e.nonTrainableWeights);if(!this.trainable){let e=[];for(let r of this.layers)e.push(...r.trainableWeights);return e.concat(t)}return t}get weights(){return this.trainableWeights.concat(this.nonTrainableWeights)}loadWeights(t,e=!0){let r={},s=0;for(let l of this.layers)for(let h of l.weights){if(r[h.originalName]!=null)throw new Q(`Duplicate weight name: ${h.originalName}`);r[h.originalName]=h,s++}let u=[];for(let l in t){let h=l;if(r[l]==null){let p=l.split("/"),m=p.slice(0,-2).concat([p[p.length-1]]);h=m.join("/")}if(r[h]!=null)u.push([r[h],t[l]]);else if(e)throw new Q(`Provided weight data has no target variable: ${l}`);delete r[h]}if(e){let l=[];for(let h in r)l.push(h);if(l.length>0)throw new Q(`${l.length} of ${s} weights are not set: ${l}`)}ww(u)}updatedConfig(){let t=this.getConfig(),e={};return e.className=this.getClassName(),e.config=t,e.kerasVersion=`tfjs-layers ${bm}`,e.backend="TensorFlow.js",e}toJSON(t,e=!0){let r=Ew(this.updatedConfig());return e?JSON.stringify(r):r}call(t,e){return ot(()=>{t=Ge(t);let r=new wa;for(let s=0;s<this.inputs.length;++s)r.add(this.inputs[s],t[s]);return Xh(this.outputs,r,e)})}computeMask(t,e){return ot(()=>{t=Ge(t);let r;return e==null?r=Ti(null,t.length):r=Ge(e),this.runInternalGraph(t,r)[1]})}computeOutputShape(t){let e=um(t);if(e.length!==this.inputLayers.length)throw new Q(`Invalid inputShape argument ${t}: model has ${this.inputLayers.length} tensor inputs.`);let r={};for(let h=0;h<e.length;h++){let p=this.inputLayers[h],m=e[h],y=p.name+"_0_0";r[y]=m}let s=Object.keys(this.nodesByDepth).map(h=>parseInt(h,10)).sort(Xd);if(s.length>1)for(let h of s){let p=this.nodesByDepth[h];for(let m of p){let y=m.outboundLayer;if(this.inputLayers.map(I=>I.id).indexOf(y.id)!==-1)continue;let b=[];for(let I=0;I<m.inboundLayers.length;I++){let D=m.inboundLayers[I],R=m.nodeIndices[I],A=m.tensorIndices[I],L=`${D.name}_${R}_${A}`,_=r[L];b.push(_)}let x=y.computeOutputShape(gr(b)),S=um(x),C=y.inboundNodes.indexOf(m);for(let I=0;I<S.length;I++){let D=`${y.name}_${C}_${I}`;r[D]=S[I]}}}let u=[],l=[];for(let h=0;h<this.outputLayers.length;h++){let p=this.outputLayers[h],m=this.outputLayersNodeIndices[h],y=this.outputLayersTensorIndices[h],b=`${p.name}_${m}_${y}`;l.push(b)}for(let h=0;h<l.length;h++){let p=l[h];Vr(p in r),u.push(r[p])}return gr(u)}runInternalGraph(t,e){e==null&&(e=Ti(null,t.length));let r={};for(let p=0;p<this.inputs.length;++p){let m=this.inputs[p],y=t[p],b=e[p];r[m.id]=[y,b]}let s=Object.keys(this.nodesByDepth).map(p=>parseInt(p,10)).sort(Xd);for(let p of s){let m=this.nodesByDepth[p];for(let y of m){let b=y.outboundLayer,x=y.inputTensors,S=y.outputTensors,C=new Array;for(let I of x)I.id in r&&C.push(r[I.id]);if(C.length===x.length){let I={},D,R,A,L;if(y.callArgs!=null&&(I=y.callArgs),C.length===1){let[_,B]=C[0];I.mask==null&&(I.mask=B),A=Ge(b.call(_,I)),L=Ge(b.computeMask(_,B)),D=[_],R=[B]}else D=C.map(_=>_[0]),R=C.map(_=>_[1]),I.mask==null&&(I.mask=R),A=Ge(b.call(D,I)),L=Ge(b.computeMask(D,R));if(b.activityRegularizer)throw new Zt("LayersModel invocation with concrete Tensor value(s) in the presence of activity regularizer(s) is not supported yet.");for(let _=0;_<S.length;++_){let B=S[_],V=A[_],q=L[_];r[B.id]=[V,q]}}}}let u=[],l=[],h=[];for(let p of this.outputs){Vr(p.id in r,`Could not compute output ${p.name} : ${p.id}`);let[m,y]=r[p.id];h.push(m.shape),u.push(m),l.push(y)}return[u,l,h]}buildNodeConversionMap(t){let e={},r;for(let s of this.layers){r=s instanceof Cs?1:0;for(let u=0;u<s.inboundNodes.length;u++){let l=Cs.nodeKey(s,u);this.containerNodes.has(l)&&(e[l]=r,r+=1)}}return e}getLayer(t,e){if(e!=null){if(this.layers.length<=e)throw new Q(`Was asked to retrieve layer at index ${e}, but model only has ${this.layers.length} layer(s).`);return this.layers[e]}else if(t==null)throw new Q("Provide either a layer name or layer index");for(let r of this.layers)if(r.name===t)return r;throw new Q(`No such layer: ${t}`)}calculateLosses(){return ot(()=>{let t=[];for(let e of this.layers)for(let r=0;r<e.inboundNodes.length;++r){let s=Cs.nodeKey(e,r);this.containerNodes.has(s)&&t.push(...e.calculateLosses())}return t})}getConfig(){let t={name:this.name},e=this.buildNodeConversionMap(this.layers),r=[];for(let l of this.layers){let h=l.getClassName(),p=l.getConfig(),m=[];for(let b=0;b<l.inboundNodes.length;b++){let x=l.inboundNodes[b],S=Cs.nodeKey(l,b),C={};if(this.containerNodes.has(S)){if(x.callArgs)try{JSON.stringify(x.callArgs),C=x.callArgs}catch(I){console.warn(`Layer ${l.name} was passed non-serializable keyword arguments: ${x.callArgs}. They will not be included in the serialized model (and thus will be missing at deserialization time).`),C={}}if(x.inboundLayers.length>0){let I=[];for(let D=0;D<x.inboundLayers.length;D++){let R=x.inboundLayers[D],A=x.nodeIndices[D],L=x.tensorIndices[D],_=Cs.nodeKey(R,A),B=e[_];B==null&&(B=0),I.push([R.name,B,L,C])}m.push(I)}}}let y={};y.name=l.name,y.className=h,y.config=p,y.inboundNodes=m,r.push(y)}t.layers=r;let s=[];for(let l=0;l<this.inputLayers.length;l++){let h=this.inputLayers[l],p=this.inputLayersNodeIndices[l],m=Cs.nodeKey(h,p);if(!this.containerNodes.has(m))continue;let y=e[m];y==null&&(y=0);let b=this.inputLayersTensorIndices[l];s.push([h.name,y,b])}t.inputLayers=s;let u=[];for(let l=0;l<this.outputLayers.length;l++){let h=this.outputLayers[l],p=this.outputLayersNodeIndices[l],m=Cs.nodeKey(h,p);if(!this.containerNodes.has(m))continue;let y=e[m];y==null&&(y=0);let b=this.outputLayersTensorIndices[l];u.push([h.name,y,b])}return t.outputLayers=u,t}static fromConfig(t,e,r={},s=!1){let u={},l={};function h(D,R){D.name in l?l[D.name].push(R):l[D.name]=[R]}function p(D,R){let A=[],L;for(let _ of R){let B=_[0],V=_[1],q=_[2];if(L=_[3]==null?{}:_[3],!(B in u)){h(D,R);return}let j=u[B];if(j.inboundNodes.length<=V){h(D,R);return}let et=j.inboundNodes[V];A.push(et.outputTensors[q])}A.length>0&&D.apply(gr(A),L)}function m(D){let R=D.name,A=Ss(D,e.customObjects!=null?e.customObjects:{});A.setFastWeightInitDuringBuild(s),u[R]=A;let L=D.inboundNodes;L.forEach(_=>{if(!(_ instanceof Array))throw new Q(`Corrupted configuration, expected array for nodeData: ${_}`);h(A,_)})}let y=e.name,b=e.layers;for(let D of b)m(D);for(;!uV(l);)for(let D of b){let R=u[D.name];if(R.name in l){let A=l[R.name];delete l[R.name];for(let L of A)p(R,L)}}let x=[],S=[],C=e.inputLayers;for(let D of C){let R=D[0],A=D[1],L=D[2];Vr(R in u);let _=u[R],B=_.inboundNodes[A].outputTensors;x.push(B[L])}let I=e.outputLayers;for(let D of I){let R=D[0],A=D[1],L=D[2];Vr(R in u);let _=u[R],B=_.inboundNodes[A].outputTensors;S.push(B[L])}return new t({inputs:x,outputs:S,name:y})}get stateful(){if(this._stateful)throw new Q("Container instance unexpectedly has _stateful = true. The statefulness of a Container is determined by the Layers it contains. Its _stateful property must remain the default false.");for(let t of this.layers)if(t.stateful)return!0;return!1}resetStates(){ot(()=>{this.layers.forEach(t=>{t.stateful&&t.resetStates()})})}}function ON(n,t,e){let r=t.length;if(n==null||Array.isArray(n)&&n.length===0)return t.map(s=>null);if(r===1)return Array.isArray(n)&&n.length===1?n:typeof n=="object"&&t[0]in n?[n[t[0]]]:[n];if(Array.isArray(n)){if(n.length!==r)throw new Error(`Provided ${e} is an array of ${n.length} element(s), but the model has ${r} outputs. Make sure a set of weights is provided for each model output.`);return n}else if(typeof n=="object"&&Object.keys(n).length>0&&typeof n[Object.keys(n)[0]]=="object"){let s=[];return t.forEach(u=>{u in n?s.push(n[u]):s.push(null)}),s}else throw new Error(`The model has multiple (${r}) outputs, so ${e} must be either an array with ${r} elements or an object with ${t} keys. Provided ${e} not understood: ${JSON.stringify(n)}`)}function MN(n,t){return ON(n,t,"classWeight")}function eft(n,t){return ON(n,t,"sampleWeight")}async function LN(n,t,e,r){if(t!=null||r!=null)throw new Error("Support sampleWeight is not implemented yet");if(e!=null){let s=ot(()=>{if(n.shape.length===1)return n.clone();if(n.shape.length===2)if(n.shape[1]>1){let h=1;return n.argMax(h)}else{if(n.shape[1]===1)return n.reshape([n.shape[0]]);throw new Error(`Encountered unexpected last-dimension size (${n.shape[1]}) during handling of class weights. The size is expected to be >= 1.`)}else throw new Error(`Unexpected rank of target (y) tensor (${n.rank}) during handling of class weights. The rank is expected to be 1 or 2.`)}),u=Array.from(await s.data());oe(s);let l=[];return u.forEach(h=>{if(e[h]==null)throw new Error(`classWeight must contain all classes in the training data. The class ${h} exists in the data but not in classWeight`);l.push(e[h])}),Ir(l,"float32")}else return null}function _U(n,t){return st(n,t)}let FU=32;function BN(n,t){let e,r,s=t;e=s.xs,r=s.ys,k(e!=null&&r!=null,()=>`A Dataset iterator for fitDataset() is expected to generate objects of the form \`{xs: xVal, ys: yVal}\`, where the two values may be \`tf.Tensor\`, an array of Tensors, or a map of string to Tensor.  The provided Dataset instead generates ${t}`);let u=zN("input",n.inputNames,e),l=zN("output",n.outputNames,r),h=u[0].shape[0];k(u.length===n.inputs.length,()=>`LayersModel has ${n.inputs.length} inputs, but the dataset provides ${u.length} inputs.  (Expected input keys: ${JSON.stringify(n.inputNames)})`),k(l.length===n.outputs.length,()=>`LayersModel has ${n.outputs.length} outputs, but the dataset provides ${l.length} outputs.  (Expected output keys: ${JSON.stringify(n.outputNames)})`);for(let p=0;p<u.length;p++)k(u[p].shape[0]===h,()=>`Batch size mismatch: input ${n.inputNames[p]} has ${u[p].shape[0]}; expected  ${h} based on input ${n.inputNames[0]}.`);for(let p=0;p<l.length;p++)k(l[p].shape[0]===h,()=>`Batch size mismatch: output ${n.outputNames[p]} has ${l[p].shape[0]}; expected  ${h} based on input ${n.inputNames[0]}.`);return{xs:u,ys:l}}function zN(n,t,e){if(e instanceof at)return[e];if(Array.isArray(e))return k(e.length===t.length,()=>`Received an array of ${e.length} Tensors, but expected ${t.length} to match the ${n} keys ${t}.`),e;{let r=[];for(let s of t){if(e[s]==null)throw new Q(`The feature data generated by the dataset lacks the required ${n} key '${s}'.`);r.push(e[s])}return r}}function RU(n){if(n.length===3)throw new Zt("Validation with sample weights is not implemented yet.");return{xs:n[0],ys:n[1]}}async function PU(n,t,e){let r=e.batchesPerEpoch!=null;if(k(n.optimizer!=null,()=>"You must compile a model before training/testing. Use LayersModel.compile(modelCompileConfig)."),k(e!=null,()=>"For fitDataset(), the 2nd argument (config) is required, but it is not provided in this call."),k(e.epochs!=null&&e.epochs>0&&Number.isInteger(e.epochs),()=>`For fitDataset(), config.epochs is expected to be a positive integer, but got ${e.epochs}`),k(!r||e.batchesPerEpoch>0&&Number.isInteger(e.batchesPerEpoch),()=>`For fitDataset(), config.batchesPerEpoch is expected to be a positive integer if specified, but got ${e.batchesPerEpoch}`),k(e.validationSplit==null,()=>"`validationSplit` is not supported by `fitDataset()`. Use validationData instead."),n.isTraining)throw new Error("Cannot start training because another fit() call is ongoing.");n.isTraining=!0;try{let s=e.validationData!=null,u,l;if(s)if(WN(e.validationData))k(e.validationBatches==null||e.validationBatches>0&&Number.isInteger(e.validationBatches),()=>`For fitDataset() with dataset-based validation, config.validationBatches is expected not to be provided, or to be a positive integer, but got ${e.validationBatches}`);else{let D=RU(e.validationData);u=D.xs,l=D.ys}let h=n.makeTrainFunction(),p=n.getDedupedMetricsNames(),m;s?m=p.slice().concat(p.map(D=>"val_"+D)):m=p.slice();let y=SN(e.callbacks,e.yieldEvery),b=e.verbose==null?1:e.verbose,{callbackList:x,history:S}=CN(y,b,e.epochs,null,null,OU(t,e),null,s,m);x.setModel(n),n.history=S,await x.onTrainBegin(),n.stopTraining_=!1;let C=e.initialEpoch==null?0:e.initialEpoch,I=await t.iterator();for(;C<e.epochs;){let D={};await x.onEpochBegin(C);let R=0,A=0;for(r||(I=await t.iterator());r?R<e.batchesPerEpoch:!0;){let L=await I.next();if(r&&L.done){console.warn(`You provided \`batchesPerEpoch\` as ${e.batchesPerEpoch}, but your dataset iterator ran out of data after ${R} batches; interrupting training. Make sure that your dataset can generate at least \`batchesPerEpoch * epochs\` batches (in this case, ${e.batchesPerEpoch*e.epochs} batches). You may need to use the repeat() function when building your dataset.`);break}if(L.value!=null){let{xs:_,ys:B}=BN(n,L.value),V={};V.batch=A,V.size=_[0].shape[0],await x.onBatchBegin(A,V);let q=[];if(e.classWeight!=null){let tt=MN(e.classWeight,n.outputNames);for(let ht=0;ht<tt.length;++ht)q.push(await LN(B[ht],null,tt[ht]))}let j=_.concat(B).concat(q),et=h(j);oe(j);for(let tt=0;tt<p.length;++tt){let ht=p[tt],gt=et[tt];V[ht]=gt,An(gt)}await x.onBatchEnd(A,V),bN(V),A++,R++}if(r?R>=e.batchesPerEpoch:L.done){if(s){let _;WN(e.validationData)?_=Ge(await n.evaluateDataset(e.validationData,{batches:e.validationBatches})):_=Ge(n.evaluate(u,l,{batchSize:e.validationBatchSize==null?FU:e.validationBatchSize,verbose:0}));for(let B=0;B<n.metricsNames.length;++B)D[`val_${n.metricsNames[B]}`]=_[B]}break}if(n.stopTraining_)break}if(await x.onEpochEnd(C,D),C++,n.stopTraining_)break}return await x.onTrainEnd(),await n.history.syncData(),n.history}finally{n.isTraining=!1}}function OU(n,t){let e=null;return t.batchesPerEpoch!=null?e=t.batchesPerEpoch:Number.isFinite(n.size)&&(e=n.size),e}function WN(n){return typeof n.iterator=="function"}function MU(n){return typeof n.next=="function"}async function LU(n,t,e){e=e||{};let r=e.batches!=null,s=n.testFunction,u=[];if(e.verbose>0)throw new Zt("Verbose mode is not implemented yet.");k(!r||e.batches>0&&Number.isInteger(e.batches),()=>`Test loop expects \`batches\` to be a positive integer, but received ${JSON.stringify(e.batches)}`);let l=MU(t)?t:await t.iterator(),h=0,p=0;for(;r?p<e.batches:!0;){let m=await l.next();if(u=ot(()=>{if(m.value){let{xs:y,ys:b}=BN(n,m.value),x=y.concat(b),S=ot(()=>s(x));if(oe(x),p===0)for(let I=0;I<S.length;++I)u.push(Ot(0));let C=x[0].shape[0];for(let I=0;I<S.length;++I){let D=S[I],R=u[I];u[I]=ot(()=>Nt(u[I],st(C,D))),p>0&&oe(R)}oe(S),h+=C,++p}return u}),m.done){r&&console.warn(`Your dataset iterator ran out of data during evaluateDataset(). Interrupting evalution. Make sure that your dataset can generate at least \`batches\` batches (in this case, ${e.batches} batches). 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Found: ${t[0].shape[0]} sample(s).`);return[t,e]}async standardizeUserData(t,e,r,s,u=!0,l){let[h,p]=this.standardizeUserDataXY(t,e,u,l);if(r!=null)throw new Error("sample weight is not supported yet.");let m=null;if(s!=null){let y=MN(s,this.outputNames);m=[];for(let b=0;b<y.length;++b)m.push(await LN(p[b],null,y[b]))}return[h,p,m]}testLoop(t,e,r,s=0,u){return ot(()=>{let l=this.checkNumSamples(e,r,u,"steps"),h=[];if(s>0)throw new Zt("Verbose mode is not implemented yet.");if(u!=null)throw new Zt("steps mode in testLoop() is not implemented yet");{let p=_w(l,r),m=Ir(xs(0,l));for(let y=0;y<p.length;++y){let b=p[y][0],x=p[y][1],S=Ci(m,b,x-b),C=Aw(e,S),I=t(C);if(y===0)for(let D=0;D<I.length;++D)h.push(Ot(0));for(let D=0;D<I.length;++D){let R=I[D];h[D]=Nt(h[D],st(x-b,R))}}for(let y=0;y<h.length;++y)h[y]=Ht(h[y],l)}return h})}getDedupedMetricsNames(){let t=this.metricsNames,e=[];for(let r=0;r<t.length;++r){let s=t[r],u=s;if(QC(t,s)>1){let l=QC(t.slice(0,r),s);u+=`_${l}`}e.push(u)}return e}makeTrainFunction(){return t=>{let e=[],r=t.slice(0,this.inputs.length),s=t.slice(this.inputs.length,this.inputs.length+this.outputs.length),u=t.slice(this.inputs.length+this.outputs.length,this.inputs.length+this.outputs.length*2),l=[],h=()=>{let b=[];for(let I=0;I<this.inputs.length;++I)b.push({key:this.inputs[I],value:r[I]});let x=new wa(b),S=Xh(this.outputs,x,{training:!0}),C;for(let I=0;I<this.lossFunctions.length;++I){let D=this.lossFunctions[I],R=D(s[I],S[I]);u[I]!=null&&(R=_U(R,u[I]));let A=an(R);e.push(A),I===0?C=R:C=Nt(C,R)}for(let I=0;I<this.metricsTensors.length;++I){let D;if(this.outputs.length>1&&I<this.outputs.length)D=e[I];else{let R=this.metricsTensors[I][0],A=this.metricsTensors[I][1];D=an(R(s[A],S[A]))}An(D),l.push(D)}return C=an(C),this.calculateLosses().forEach(I=>{C=Nt(C,I)}),C},p=this.collectedTrainableWeights.map(b=>b.read()),m=!0,y=this.optimizer_.minimize(h,m,p);return[y].concat(l)}}makeTestFunction(){this.testFunction=t=>ot(()=>{let e=[],r,s=t.slice(0,this.inputs.length),u=t.slice(this.inputs.length,this.inputs.length+this.outputs.length),l=[];for(let m=0;m<this.inputs.length;++m)l.push({key:this.inputs[m],value:s[m]});let h=new wa(l),p=Xh(this.outputs,h);for(let m=0;m<this.lossFunctions.length;++m){let y=this.lossFunctions[m],b=an(y(u[m],p[m]));m===0?r=b:r=Nt(r,b),e.push(r)}for(let m=0;m<this.metricsTensors.length;++m){let y=this.metricsTensors[m][0],b=this.metricsTensors[m][1],x=an(y(u[b],p[b]));e.push(x)}return e})}async fit(t,e,r={}){return zU(this,t,e,r)}async fitDataset(t,e){return PU(this,t,e)}async trainOnBatch(t,e){let r=await this.standardizeUserData(t,e),s=r[0],u=r[1],l=this.makeTrainFunction(),h=l(s.concat(u)),p=[];for(let m of h){let y=await m.data();p.push(y[0])}return oe(h),gr(p)}getNamedWeights(t){let e=[],r=t!=null&&t.trainableOnly,s=r?this.trainableWeights:this.weights,u=this.getWeights(r);for(let l=0;l<s.length;++l){if(r&&!s[l].trainable)continue;e.push({name:s[l].originalName,tensor:u[l]})}return e}set stopTraining(t){this.stopTraining_=t}get stopTraining(){return this.stopTraining_}get optimizer(){return this.optimizer_}set optimizer(t){this.optimizer_!==t&&(this.optimizer_=t,this.isOptimizerOwned=!1)}dispose(){let t=super.dispose();if(t.refCountAfterDispose===0&&this.optimizer!=null&&this.isOptimizerOwned){let e=id().numTensors;this.optimizer_.dispose(),t.numDisposedVariables+=e-id().numTensors}return t}getLossIdentifiers(){let t;if(typeof this.loss=="string")t=Co(this.loss);else if(Array.isArray(this.loss)){for(let e of this.loss)if(typeof e!="string")throw new Error("Serialization of non-string loss is not supported.");t=this.loss.map(e=>Co(e))}else{let e=Object.keys(this.loss);t={};let r=this.loss;for(let s of e)if(typeof r[s]=="string")t[s]=Co(r[s]);else throw new Error("Serialization of non-string loss is not supported.")}return t}getMetricIdentifiers(){if(typeof this.metrics=="string"||typeof this.metrics=="function")return[Co(vm(this.metrics))];if(Array.isArray(this.metrics))return this.metrics.map(t=>Co(vm(t)));{let t={};for(let e in this.metrics)t[e]=Co(vm(this.metrics[e]));return t}}getTrainingConfig(){return{loss:this.getLossIdentifiers(),metrics:this.getMetricIdentifiers(),optimizer_config:{class_name:this.optimizer.getClassName(),config:this.optimizer.getConfig()}}}loadTrainingConfig(t){if(t.weighted_metrics!=null)throw new Error("Loading weight_metrics is not supported yet.");if(t.loss_weights!=null)throw new Error("Loading loss_weights is not supported yet.");if(t.sample_weight_mode!=null)throw new Error("Loading sample_weight_mode is not supported yet.");let e=Kh(t.optimizer_config),r=Ss(e),s;if(typeof t.loss=="string")s=ki(t.loss);else if(Array.isArray(t.loss))s=t.loss.map(l=>ki(l));else if(t.loss!=null){s={};for(let l in t.loss)s[l]=ki(t.loss[l])}let u;if(Array.isArray(t.metrics))u=t.metrics.map(l=>ki(l));else if(t.metrics!=null){u={};for(let l in t.metrics)u[l]=ki(t.metrics[l])}this.compile({loss:s,metrics:u,optimizer:r})}async save(t,e){if(typeof t=="string"){let m=Ey(t);if(m.length===0)throw new Q(`Cannot find any save handlers for URL '${t}'`);if(m.length>1)throw new Q(`Found more than one (${m.length}) save handlers for URL '${t}'`);t=m[0]}if(t.save==null)throw new Q("LayersModel.save() cannot proceed because the IOHandler provided does not have the `save` attribute defined.");let r=await Ny(this.getNamedWeights(e)),s=!1,u=null,l=this.toJSON(u,s),h={modelTopology:l,format:HU,generatedBy:`TensorFlow.js tfjs-layers v${bm}`,convertedBy:null},p=e==null?!1:e.includeOptimizer;if(p&&this.optimizer!=null){h.trainingConfig=this.getTrainingConfig();let m="optimizer",{data:y,specs:b}=await Ny(await this.optimizer.getWeights(),m);r.specs.push(...b),r.data=Zp([r.data,y])}if(this.userDefinedMetadata!=null){let m=!0;_N(this.userDefinedMetadata,this.name,m),h.userDefinedMetadata=this.userDefinedMetadata}return h.weightData=r.data,h.weightSpecs=r.specs,t.save(h)}setUserDefinedMetadata(t){_N(t,this.name),this.userDefinedMetadata=t}getUserDefinedMetadata(){return this.userDefinedMetadata}}Io.className="Model",kt(Io);class qN extends Io{}qN.className="Functional",kt(qN);async function qU(n,t){"modelTopology"in n||(n={modelTopology:n}),n=n;let e=n.modelTopology;e.model_config!=null&&(e=e.model_config);let r=Kh(e),s=Ss(r,t);if(n.weightsManifest!=null){let u=await bS(n.weightsManifest,n.pathPrefix,s.weights.map(h=>h.originalName)),l={};for(let h of s.weights)l[h.originalName]=u[h.originalName];s.loadWeights(l),oe(u)}return s}async function jU(n,t){if(t==null&&(t={}),typeof n=="string"){let e=Dy(n,t);if(e.length===0)e.push(ed(n,t));else if(e.length>1)throw new Q(`Found more than one (${e.length}) load handlers for URL '${n}'`);n=e[0]}return KU(n,void 0,t)}async function KU(n,t,e){if(e==null&&(e={}),n.load==null)throw new Q("Cannot proceed with model loading because the IOHandler provided does not have the `load` method implemented.");let r=await n.load(),s=r.modelTopology;s.model_config!=null&&(s=s.model_config);let u=e.strict==null?!0:e.strict,l=r.weightData!=null&&r.weightSpecs!=null&&u,h=Ss(Kh(s),t,l),p=r.trainingConfig;if(p!=null&&h.loadTrainingConfig(p),r.userDefinedMetadata!=null&&h.setUserDefinedMetadata(r.userDefinedMetadata),r.weightData!=null){if(r.weightSpecs==null)throw new Q("LayersModel artifacts contains weight data, but not weight specs. Therefore loading of weights cannot proceed.");let{modelWeights:m,optimizerWeights:y}=XU(r.weightData,r.weightSpecs);h.loadWeights(m,u),h.optimizer!=null&&y.length>0&&await h.optimizer.setWeights(y),oe(m),oe(y.map(b=>b.tensor))}return h}function XU(n,t){let e=Jp(n,t),r={},s=[];return t.forEach(u=>{u.group==="optimizer"?s.push({name:u.name,tensor:e[u.name]}):r[u.name]=e[u.name]}),{modelWeights:r,optimizerWeights:s}}class Ii extends Io{constructor(t){super({inputs:[],outputs:[]});if(t=t||{},this.trainable=!0,this.built=!1,this.name=t.name!=null?t.name:im("sequential_"),t.layers!=null)for(let e of t.layers)this.add(e)}checkShape(t){let e=t.inboundNodes[0].outputTensors[0].shape;if(e.some(r=>r<0))throw new Q(`Negative dimension size caused by adding layer ${t.name} with input shape [${t.inboundNodes[0].inputTensors[0].shape}]`)}add(t){let e=t instanceof Ii||t instanceof Io,r;if(e){if(r=t,r.outputs.length!==1)throw new Q("All layers in a Sequential model should have a single output tensor. For multi-output layers, use the functional API.");if(r.inputs.length!==1)throw new Q("All layers in a Sequential model should have a single input tensor. For multi-input layers, use the functional API.")}if(this.outputs.length===0){if(t.inboundNodes.length===0){if(t.batchInputShape==null)throw new Q("The first layer in a Sequential model must get an `inputShape` or `batchInputShape` argument.");let s=yN({batchShape:t.batchInputShape,dtype:t.dtype,name:t.name+"_input"});t.apply(s)}if(e)this.outputs=r.outputs,this.inputs=r.inputs;else{if(t.inboundNodes.length!==1)throw new Q(`A layer added to a Sequential model must not already be connected somewhere else. LayersModel received layer ${t.name} which has ${t.inboundNodes.length} pre-existing inbound connections.`);if(t.inboundNodes[0].outputTensors.length!==1)throw new Q("All layers in a Sequential model should have a single output tensor. For multi-output layers, use the functional API.");this.checkShape(t),this.outputs=[t.inboundNodes[0].outputTensors[0]],this.inputs=vN(this.outputs[0])}this.inboundNodes=[],new lm({outboundLayer:this,inboundLayers:[],nodeIndices:[],tensorIndices:[],inputTensors:this.inputs,outputTensors:this.outputs,inputMasks:Ti(null,this.inputs.length),outputMasks:[null],inputShapes:this.inputs.map(s=>s.shape),outputShapes:this.outputs[0].shape})}else{let s=t.apply(this.outputs[0]);if(Array.isArray(s))throw new TypeError("All layers in a Sequential model should have a single output tensor. For multi-output layers, use the functional API.");this.checkShape(t),this.outputs=[s],this.inboundNodes[0].outputTensors=this.outputs,this.inboundNodes[0].outputShapes=[this.outputs[0].shape]}this.layers.push(t),this.built=!1}pop(){if(this.layers.length===0)throw new TypeError("There are no layers in the model.");if(this.layers.pop(),this.layers.length===0)this.outputs=[],this.inboundNodes=[],this.outboundNodes=[];else{let t=this.layers.length-1;this.layers[t].outboundNodes=[],this.outputs=[this.layers[t].output],this.inboundNodes[0].outputTensors=this.outputs,this.inboundNodes[0].outputShapes=[this.outputs[0].shape]}}call(t,e){return this.model==null&&this.build(),this.model.call(t,e)}build(t){if(Be(t),this.inputs.length===0||this.outputs.length===0)throw new TypeError("Sequential model cannot be built: model is empty. Add some layers first.");this.model=new Io({inputs:this.inputs,outputs:this.outputs[0],name:this.name+"_model"}),this.model.trainable=this.trainable,this.supportsMasking=this.model.supportsMasking,this.inputLayers=this.model.inputLayers,this.inputLayersNodeIndices=this.model.inputLayersNodeIndices,this.inputLayersTensorIndices=this.model.inputLayersTensorIndices,this.outputLayers=this.model.outputLayers,this.outputLayersNodeIndices=this.model.outputLayersNodeIndices,this.outputLayersTensorIndices=this.model.outputLayersTensorIndices,this.nodesByDepth=this.model.nodesByDepth,this.containerNodes=this.model.containerNodes,this.outputNames=this.model.outputNames,this.inputNames=this.model.inputNames,this.built=!0}countParams(){return this.built||this.build(),super.countParams()}summary(t,e,r=console.log){this.built||this.build(),super.summary(t,e,r)}setWeights(t){this.model==null&&this.build(),this.model.setWeights(t)}evaluate(t,e,r={}){if(!this.built)throw new ns("The model needs to be compiled before being used.");return this.model.evaluate(t,e,r)}async evaluateDataset(t,e){if(!this.built)throw new ns("The model needs to be compiled before being used.");return this.model.evaluateDataset(t,e)}predict(t,e={}){return this.model==null&&this.build(),this.model.predict(t,e)}predictOnBatch(t){return this.model==null&&this.build(),this.model.predictOnBatch(t)}compile(t){this.build(),this.model.compile(t),this.optimizer_=this.model.optimizer,this.isOptimizerOwned=this.model.isOptimizerOwned,this.loss=this.model.loss,this.metrics=this.model.metrics,this.metricsTensors=this.model.metricsTensors,this.metricsNames=this.model.metricsNames}get optimizer(){return this.model==null?void 0:this.model.optimizer}set optimizer(t){this.model.optimizer=t}async fit(t,e,r={}){if(!this.built)throw new ns("The model needs to be compiled before being used.");return this.model.fit(t,e,r)}async fitDataset(t,e){if(!this.built)throw new ns("The model needs to be compiled before being used.");return this.model.fitDataset(t,e)}async trainOnBatch(t,e){return this.model.trainOnBatch(t,e)}static fromConfig(t,e,r={},s=!1){let u,l={};if(e instanceof Array){if(!(e[0].className!=null)||e[0].className==="Merge")throw new Q("Legacy serialization format not supported yet.");u=e}else k(e.layers!=null,()=>"When the config data for a Sequential model is not an Array, it must be an Object that contains the 'layers' field."),u=e.layers,delete e.layers,l=e;let h=new t(l);if(!(h instanceof Ii))throw new Zt(`Sequential.fromConfig called on non-Sequential input: ${h}`);for(let p of u){let m=void 0,y=Ss(p,m,s);s&&y.setFastWeightInitDuringBuild(!0),h.add(y)}return h}set stopTraining(t){if(this.model==null)throw new Q("Cannot set the stopTraining property of a sequential model before it is compiled.");this.model.stopTraining=t}get stopTraining(){if(this.model==null)throw new Q("Cannot get the stopTraining property of a sequential model before it is compiled.");return this.model.stopTraining}getConfig(){let t=[];for(let e of this.layers){let r={};r.className=e.getClassName(),r.config=e.getConfig(),t.push(r)}return{name:this.name,layers:t}}}Ii.className="Sequential",kt(Ii);function YU(n){return new Io(n)}function JU(n){return new Ii(n)}function ZU(n,t){return t==null&&(t={}),jU(n,t)}function jN(n){return yN(n)}function QU(n,t){Gr.registerCallbackConstructor(n,t)}class Dr extends li{getConfig(){return{}}}class KN extends Dr{apply(t,e=1){return IV(t,e)}}KN.className="elu",kt(KN);class XN extends Dr{apply(t){return Ed(t)}}XN.className="selu",kt(XN);class YN extends Dr{apply(t){return Ys(t)}}YN.className="relu",kt(YN);class JN extends Dr{apply(t){return ot(()=>mi(6,Ys(t)))}}JN.className="relu6",kt(JN);class ZN extends Dr{apply(t){return t}}ZN.className="linear",kt(ZN);class QN extends Dr{apply(t){return js(t)}}QN.className="sigmoid",kt(QN);class tI extends Dr{apply(t){return DV(t)}}tI.className="hardSigmoid",kt(tI);class eI extends Dr{apply(t){return Ru(t)}}eI.className="softplus",kt(eI);class nI extends Dr{apply(t){return EV(t)}}nI.className="softsign",kt(nI);class rI extends Dr{apply(t){return Du(t)}}rI.className="tanh",kt(rI);class Rw extends Dr{apply(t,e=-1){return bi(t,e)}}Rw.className="softmax",kt(Rw);class sI extends Dr{apply(t,e=-1){return Td(t,e)}}sI.className="logSoftmax",kt(sI);class oI extends Dr{apply(t,e=1){return ot(()=>js(t.mul(e)).mul(t))}}oI.className="swish",kt(oI);function xa(n){return n.getClassName()}function Pw(n,t={}){return zh(n,Lr.getMap().classNameMap,t,"activation")}function Ta(n){if(n==null){let t={};return t.className="linear",t.config={},Pw(t)}if(typeof n=="string"){let t={};return t.className=n,t.config={},Pw(t)}else return n instanceof Dr?n:Pw(n)}function Ow(n){if(n!=null&&typeof n!="object")throw new Error(`Argument to L1L2 regularizer's constructor is expected to be an object, but received: ${n}`)}class aI extends li{}class Jh extends aI{constructor(t){super();Ow(t),this.l1=t==null||t.l1==null?.01:t.l1,this.l2=t==null||t.l2==null?.01:t.l2,this.hasL1=this.l1!==0,this.hasL2=this.l2!==0}apply(t){return ot(()=>{let e=Se([1]);return this.hasL1&&(e=Nt(e,Xt(st(this.l1,kn(t))))),this.hasL2&&(e=Nt(e,Xt(st(this.l2,Hh(t))))),e.asScalar()})}getConfig(){return{l1:this.l1,l2:this.l2}}static fromConfig(t,e){return new t({l1:e.l1,l2:e.l2})}}Jh.className="L1L2",kt(Jh);function tG(n){return Ow(n),new Jh({l1:n!=null?n.l1:null,l2:0})}function eG(n){return Ow(n),new Jh({l2:n!=null?n.l2:null,l1:0})}let iI={l1l2:"L1L2"};function ze(n){return Qb(n)}function uI(n,t={}){return zh(n,Lr.getMap().classNameMap,t,"regularizer")}function Ye(n){if(n==null)return null;if(typeof n=="string"){let t=n in iI?iI[n]:n,e={className:t,config:{}};return uI(e)}else return n instanceof aI?n:uI(n)}class Mw extends Te{constructor(t){super(t==null?{}:t);this.supportsMasking=!0,t!=null&&(this.maxValue=t.maxValue)}call(t,e){t=le(t);let r=Ys(t);return this.maxValue!=null&&(r=fr(r,0,this.maxValue)),r}computeOutputShape(t){return t}getConfig(){let t={maxValue:this.maxValue},e=super.getConfig();return Object.assign(t,e),t}}Mw.className="ReLU",kt(Mw);class Lw extends Te{constructor(t){super(t==null?{}:t);this.DEFAULT_ALPHA=.3,t==null&&(t={}),this.alpha=t.alpha==null?this.DEFAULT_ALPHA:t.alpha}call(t,e){let r=le(t);return bd(r,this.alpha)}computeOutputShape(t){return t}getConfig(){let t={alpha:this.alpha},e=super.getConfig();return Object.assign(t,e),t}}Lw.className="LeakyReLU",kt(Lw);class Bw extends Te{constructor(t){super(t==null?{}:t);if(this.DEFAULT_ALPHA_INITIALIZER="zeros",t==null&&(t={}),this.supportsMasking=!0,this.alphaInitializer=Xe(t.alphaInitializer||this.DEFAULT_ALPHA_INITIALIZER),this.alphaRegularizer=Ye(t.alphaRegularizer),this.alphaConstraint=In(t.alphaConstraint),t.sharedAxes==null)this.sharedAxes=null;else if(Array.isArray(t.sharedAxes))this.sharedAxes=t.sharedAxes;else if(typeof t.sharedAxes=="number")this.sharedAxes=[t.sharedAxes];else throw new Q(`Expected sharedAxes to be a number or an array of numbers, but got ${t.sharedAxes}`)}build(t){t=Be(t);let e=t.slice(1);if(this.sharedAxes!=null)for(let s of this.sharedAxes)e[s-1]=1;this.alpha=this.addWeight("alpha",e,"float32",this.alphaInitializer,this.alphaRegularizer,!0,this.alphaConstraint);let r={};if(this.sharedAxes!=null)for(let s=1;s<t.length;++s)r[s]=t[s];this.inputSpec=[new Fn({ndim:t.length,axes:r})],this.built=!0}call(t,e){return t=le(t),Sh(t,this.alpha.read())}getConfig(){let t={alphaInitializer:cn(this.alphaInitializer),alphaRegularizer:ze(this.alphaRegularizer),alphaConstraint:Nn(this.alphaConstraint),sharedAxes:this.sharedAxes},e=super.getConfig();return Object.assign(t,e),t}}Bw.className="PReLU",kt(Bw);class zw extends Te{constructor(t){super(t==null?{}:t);if(this.DEFAULT_ALPHA=1,t==null&&(t={}),t.alpha!=null&&t.alpha!==this.DEFAULT_ALPHA)throw new Zt(`Non-default alpha value (${t.alpha}) is not supported by the ELU layer yet.`);this.alpha=t.alpha==null?this.DEFAULT_ALPHA:t.alpha}call(t,e){let r=le(t);return $u(r)}computeOutputShape(t){return t}getConfig(){let t={alpha:this.alpha},e=super.getConfig();return Object.assign(t,e),t}}zw.className="ELU",kt(zw);class Ww extends Te{constructor(t){super(t==null?{}:t);this.DEFAULT_THETA=1,t==null&&(t={}),this.theta=t.theta==null?this.DEFAULT_THETA:t.theta}call(t,e){let r=le(t);return r.mul(Uh(r.greater(this.theta),"float32"))}computeOutputShape(t){return t}getConfig(){let t={theta:this.theta},e=super.getConfig();return Object.assign(t,e),t}}Ww.className="ThresholdedReLU",kt(Ww);class Vw extends Te{constructor(t){super(t==null?{}:t);this.DEFAULT_AXIS=1,t==null&&(t={}),this.softmax=new Rw().apply,this.axis=t.axis==null?this.DEFAULT_AXIS:t.axis}call(t,e){let r=le(t);return this.softmax(r,this.axis)}computeOutputShape(t){return t}getConfig(){let t={axis:this.axis},e=super.getConfig();return Object.assign(t,e),t}}Vw.className="Softmax",kt(Vw);function Ju(n,t,e){if(typeof n=="number")return Ti(n,t);if(n.length!==t)throw new Q(`The ${e} argument must be an integer or tuple of ${t} integers. Received: ${n.length} elements.`);for(let r=0;r<t;++r){let s=n[r];if(!xV(s))throw new Q(`The ${e} argument must be an integer or tuple of ${t} integers. Received: ${JSON.stringify(n)} including a non-integer number ${s}`)}return n}function Ns(n,t,e,r,s=1){if(n==null)return n;let u=t+(t-1)*(s-1),l;return e==="same"?l=n:l=n-u+1,Math.floor((l+r-1)/r)}function wm(n,t,e,r){if(n==null)return null;if(r==="valid")n=n*t+va([e-t,0]);else if(r==="same")n=n*t;else throw new Q(`Unsupport padding mode: ${r}.`);return n}function Uw(n,t){return ot(()=>(un(t),t==="channelsFirst"?re(n,[0,2,3,1]):n))}function cI(n,t){return ot(()=>(un(t),t==="channelsFirst"?re(n,[0,2,3,4,1]):n))}function lI(n,t,e,r=1,s="valid",u,l=1){return ot(()=>{if(u==null&&(u=ws()),un(u),n.shape.length!==3)throw new Q(`The input of a conv1dWithBias operation should be 3, but is ${n.shape.length} instead.`);if(t.shape.length!==3)throw new Q(`The kernel for a conv1dWithBias operation should be 3, but is ${t.shape.length} instead`);if(e!=null&&e.shape.length!==1)throw new Q(`The bias for a conv1dWithBias operation should be 1, but is ${t.shape.length} instead`);if(u==="channelsFirst"&&(n=re(n,[0,2,1])),s==="causal")throw new Zt("The support for CAUSAL padding mode in conv1dWithBias is not implemented yet.");let h=dd(n,t,r,s==="same"?"same":"valid","NWC",l);return e!=null&&(h=Qs(h,e)),h})}function nft(n,t,e=1,r="valid",s,u=1){return ot(()=>(un(s),lI(n,t,null,e,r,s,u)))}function rft(n,t,e=[1,1],r="valid",s,u){return ot(()=>(un(s),Gw(n,t,null,e,r,s,u)))}function Gw(n,t,e,r=[1,1],s="valid",u,l,h=null){return ot(()=>{if(u==null&&(u=ws()),un(u),n.rank!==3&&n.rank!==4)throw new Q(`conv2dWithBiasActivation expects input to be of rank 3 or 4, but received ${n.rank}.`);if(t.rank!==3&&t.rank!==4)throw new Q(`conv2dWithBiasActivation expects kernel to be of rank 3 or 4, but received ${n.rank}.`);let p=Uw(n,u);if(s==="causal")throw new Zt("The support for CAUSAL padding mode in conv1dWithBias is not implemented yet.");return p=Pb({x:p,filter:t,strides:r,pad:s==="same"?"same":"valid",dilations:l,dataFormat:"NHWC",bias:e,activation:h}),u==="channelsFirst"&&(p=re(p,[0,3,1,2])),p})}function sft(n,t,e=[1,1,1],r="valid",s,u){return ot(()=>(un(s),hI(n,t,null,e,r,s,u)))}function hI(n,t,e,r=[1,1,1],s="valid",u,l){return ot(()=>{if(u==null&&(u=ws()),un(u),n.rank!==4&&n.rank!==5)throw new Q(`conv3dWithBias expects input to be of rank 4 or 5, but received ${n.rank}.`);if(t.rank!==4&&t.rank!==5)throw new Q(`conv3dWithBias expects kernel to be of rank 4 or 5, but received ${n.rank}.`);let h=cI(n,u);if(s==="causal")throw new Zt("The support for CAUSAL padding mode in conv3dWithBias is not implemented yet.");return h=ab(h,t,r,s==="same"?"same":"valid","NDHWC",l),e!=null&&(h=Qs(h,e)),u==="channelsFirst"&&(h=re(h,[0,4,1,2,3])),h})}class xm extends Te{constructor(t,e){super(e);if(this.bias=null,this.DEFAULT_KERNEL_INITIALIZER="glorotNormal",this.DEFAULT_BIAS_INITIALIZER="zeros",xm.verifyArgs(e),this.rank=t,_n(this.rank,"rank"),this.rank!==1&&this.rank!==2&&this.rank!==3)throw new Zt(`Convolution layer for rank other than 1, 2, or 3 (${this.rank}) is not implemented yet.`);if(this.kernelSize=Ju(e.kernelSize,t,"kernelSize"),this.strides=Ju(e.strides==null?1:e.strides,t,"strides"),this.padding=e.padding==null?"valid":e.padding,Ur(this.padding),this.dataFormat=e.dataFormat==null?"channelsLast":e.dataFormat,un(this.dataFormat),this.activation=Ta(e.activation),this.useBias=e.useBias==null?!0:e.useBias,this.biasInitializer=Xe(e.biasInitializer||this.DEFAULT_BIAS_INITIALIZER),this.biasConstraint=In(e.biasConstraint),this.biasRegularizer=Ye(e.biasRegularizer),this.activityRegularizer=Ye(e.activityRegularizer),this.dilationRate=Ju(e.dilationRate==null?1:e.dilationRate,t,"dilationRate"),this.rank===1&&Array.isArray(this.dilationRate)&&this.dilationRate.length!==1)throw new Q(`dilationRate must be a number or an array of a single number for 1D convolution, but received ${JSON.stringify(this.dilationRate)}`);if(this.rank===2){if(typeof this.dilationRate=="number")this.dilationRate=[this.dilationRate,this.dilationRate];else if(this.dilationRate.length!==2)throw new Q(`dilationRate must be a number or array of two numbers for 2D convolution, but received ${JSON.stringify(this.dilationRate)}`)}else if(this.rank===3){if(typeof this.dilationRate=="number")this.dilationRate=[this.dilationRate,this.dilationRate,this.dilationRate];else if(this.dilationRate.length!==3)throw new Q(`dilationRate must be a number or array of three numbers for 3D convolution, but received ${JSON.stringify(this.dilationRate)}`)}}static verifyArgs(t){if(Vr("kernelSize"in t,"required key 'kernelSize' not in config"),typeof t.kernelSize!="number"&&!ew(t.kernelSize,"number",1,3))throw new Q(`BaseConv expects config.kernelSize to be number or number[] with length 1, 2, or 3, but received ${JSON.stringify(t.kernelSize)}.`)}getConfig(){let t={kernelSize:this.kernelSize,strides:this.strides,padding:this.padding,dataFormat:this.dataFormat,dilationRate:this.dilationRate,activation:xa(this.activation),useBias:this.useBias,biasInitializer:cn(this.biasInitializer),biasRegularizer:ze(this.biasRegularizer),activityRegularizer:ze(this.activityRegularizer),biasConstraint:Nn(this.biasConstraint)},e=super.getConfig();return Object.assign(t,e),t}}class Zu extends xm{constructor(t,e){super(t,e);this.kernel=null,Zu.verifyArgs(e),this.filters=e.filters,_n(this.filters,"filters"),this.kernelInitializer=Xe(e.kernelInitializer||this.DEFAULT_KERNEL_INITIALIZER),this.kernelConstraint=In(e.kernelConstraint),this.kernelRegularizer=Ye(e.kernelRegularizer)}build(t){t=Be(t);let e=this.dataFormat==="channelsFirst"?1:t.length-1;if(t[e]==null)throw new Q(`The channel dimension of the input should be defined. Found ${t[e]}`);let r=t[e],s=this.kernelSize.concat([r,this.filters]);this.kernel=this.addWeight("kernel",s,null,this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint),this.useBias&&(this.bias=this.addWeight("bias",[this.filters],null,this.biasInitializer,this.biasRegularizer,!0,this.biasConstraint)),this.inputSpec=[{ndim:this.rank+2,axes:{[e]:r}}],this.built=!0}call(t,e){return ot(()=>{t=le(t);let r,s=this.bias==null?null:this.bias.read(),u=eN(this.activation.getClassName());if(u!=null&&this.rank===2)r=Gw(t,this.kernel.read(),s,this.strides,this.padding,this.dataFormat,this.dilationRate,u);else{if(this.rank===1)r=lI(t,this.kernel.read(),s,this.strides[0],this.padding,this.dataFormat,this.dilationRate[0]);else if(this.rank===2)r=Gw(t,this.kernel.read(),s,this.strides,this.padding,this.dataFormat,this.dilationRate);else if(this.rank===3)r=hI(t,this.kernel.read(),s,this.strides,this.padding,this.dataFormat,this.dilationRate);else throw new Zt("convolutions greater than 3D are not implemented yet.");this.activation!=null&&(r=this.activation.apply(r))}return r})}computeOutputShape(t){t=Be(t);let e=[],r=this.dataFormat==="channelsLast"?t.slice(1,t.length-1):t.slice(2);for(let u=0;u<r.length;++u){let l=Ns(r[u],this.kernelSize[u],this.padding,this.strides[u],typeof this.dilationRate=="number"?this.dilationRate:this.dilationRate[u]);e.push(l)}let s=[t[0]];return this.dataFormat==="channelsLast"?(s=s.concat(e),s.push(this.filters)):(s.push(this.filters),s=s.concat(e)),s}getConfig(){let t={filters:this.filters,kernelInitializer:cn(this.kernelInitializer),kernelRegularizer:ze(this.kernelRegularizer),kernelConstraint:Nn(this.kernelConstraint)},e=super.getConfig();return Object.assign(t,e),t}static verifyArgs(t){if(!("filters"in t)||typeof t.filters!="number"||t.filters<1)throw new Q(`Convolution layer expected config.filters to be a 'number' > 0 but got ${JSON.stringify(t.filters)}`)}}class Qu extends Zu{constructor(t){super(2,t);Qu.verifyArgs(t)}getConfig(){let t=super.getConfig();return delete t.rank,t}static verifyArgs(t){if(typeof t.kernelSize!="number"&&!ew(t.kernelSize,"number",1,2))throw new Q(`Conv2D expects config.kernelSize to be number or number[] with length 1 or 2, but received ${JSON.stringify(t.kernelSize)}.`)}}Qu.className="Conv2D",kt(Qu);class Zh extends Zu{constructor(t){super(3,t);Zh.verifyArgs(t)}getConfig(){let t=super.getConfig();return delete t.rank,t}static verifyArgs(t){if(typeof t.kernelSize!="number"&&!(Array.isArray(t.kernelSize)&&(t.kernelSize.length===1||t.kernelSize.length===3)))throw new Q(`Conv3D expects config.kernelSize to be number or [number, number, number], but received ${JSON.stringify(t.kernelSize)}.`)}}Zh.className="Conv3D",kt(Zh);class Hw extends Qu{constructor(t){super(t);if(this.inputSpec=[new Fn({ndim:4})],this.padding!=="same"&&this.padding!=="valid")throw new Q(`Conv2DTranspose currently supports only padding modes 'same' and 'valid', but received padding mode ${this.padding}`)}build(t){if(t=Be(t),t.length!==4)throw new Q("Input should have rank 4; Received input shape: "+JSON.stringify(t));let e=this.dataFormat==="channelsFirst"?1:t.length-1;if(t[e]==null)throw new Q("The channel dimension of the inputs should be defined. Found `None`.");let r=t[e],s=this.kernelSize.concat([this.filters,r]);this.kernel=this.addWeight("kernel",s,"float32",this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint),this.useBias&&(this.bias=this.addWeight("bias",[this.filters],"float32",this.biasInitializer,this.biasRegularizer,!0,this.biasConstraint)),this.inputSpec=[new Fn({ndim:4,axes:{[e]:r}})],this.built=!0}call(t,e){return ot(()=>{let r=le(t);if(r.shape.length!==4)throw new Q(`Conv2DTranspose.call() expects input tensor to be rank-4, but received a tensor of rank-${r.shape.length}`);let s=r.shape,u=s[0],l,h;this.dataFormat==="channelsFirst"?(l=2,h=3):(l=1,h=2);let p=s[l],m=s[h],y=this.kernelSize[0],b=this.kernelSize[1],x=this.strides[0],S=this.strides[1],C=wm(p,x,y,this.padding),I=wm(m,S,b,this.padding),D=[u,C,I,this.filters];this.dataFormat!=="channelsLast"&&(r=re(r,[0,2,3,1]));let R=md(r,this.kernel.read(),D,this.strides,this.padding);return this.dataFormat!=="channelsLast"&&(R=re(R,[0,3,1,2])),this.bias!=null&&(R=Qs(R,this.bias.read(),this.dataFormat)),this.activation!=null&&(R=this.activation.apply(R)),R})}computeOutputShape(t){t=Be(t);let e=t.slice(),r,s,u;this.dataFormat==="channelsFirst"?(r=1,s=2,u=3):(r=3,s=1,u=2);let l=this.kernelSize[0],h=this.kernelSize[1],p=this.strides[0],m=this.strides[1];return e[r]=this.filters,e[s]=wm(e[s],p,l,this.padding),e[u]=wm(e[u],m,h,this.padding),e}getConfig(){let t=super.getConfig();return delete t.dilationRate,t}}Hw.className="Conv2DTranspose",kt(Hw);class fI extends Zu{constructor(t,e){super(t,e);if(this.DEFAULT_DEPTHWISE_INITIALIZER="glorotUniform",this.DEFAULT_POINTWISE_INITIALIZER="glorotUniform",this.depthwiseKernel=null,this.pointwiseKernel=null,e.filters==null)throw new Q("The `filters` configuration field is required by SeparableConv, but is unspecified.");if(e.kernelInitializer!=null||e.kernelRegularizer!=null||e.kernelConstraint!=null)throw new Q("Fields kernelInitializer, kernelRegularizer and kernelConstraint are invalid for SeparableConv2D. Use depthwiseInitializer, depthwiseRegularizer, depthwiseConstraint, pointwiseInitializer, pointwiseRegularizer and pointwiseConstraint instead.");if(e.padding!=null&&e.padding!=="same"&&e.padding!=="valid")throw new Q(`SeparableConv${this.rank}D supports only padding modes: 'same' and 'valid', but received ${JSON.stringify(e.padding)}`);this.depthMultiplier=e.depthMultiplier==null?1:e.depthMultiplier,this.depthwiseInitializer=Xe(e.depthwiseInitializer||this.DEFAULT_DEPTHWISE_INITIALIZER),this.depthwiseRegularizer=Ye(e.depthwiseRegularizer),this.depthwiseConstraint=In(e.depthwiseConstraint),this.pointwiseInitializer=Xe(e.depthwiseInitializer||this.DEFAULT_POINTWISE_INITIALIZER),this.pointwiseRegularizer=Ye(e.pointwiseRegularizer),this.pointwiseConstraint=In(e.pointwiseConstraint)}build(t){if(t=Be(t),t.length<this.rank+2)throw new Q(`Inputs to SeparableConv${this.rank}D should have rank ${this.rank+2}, but received input shape: ${JSON.stringify(t)}`);let e=this.dataFormat==="channelsFirst"?1:t.length-1;if(t[e]==null||t[e]<0)throw new Q(`The channel dimension of the inputs should be defined, but found ${JSON.stringify(t[e])}`);let r=t[e],s=this.kernelSize.concat([r,this.depthMultiplier]),u=[];for(let h=0;h<this.rank;++h)u.push(1);u.push(r*this.depthMultiplier,this.filters);let l=!0;this.depthwiseKernel=this.addWeight("depthwise_kernel",s,"float32",this.depthwiseInitializer,this.depthwiseRegularizer,l,this.depthwiseConstraint),this.pointwiseKernel=this.addWeight("pointwise_kernel",u,"float32",this.pointwiseInitializer,this.pointwiseRegularizer,l,this.pointwiseConstraint),this.useBias?this.bias=this.addWeight("bias",[this.filters],"float32",this.biasInitializer,this.biasRegularizer,l,this.biasConstraint):this.bias=null,this.inputSpec=[new Fn({ndim:this.rank+2,axes:{[e]:r}})],this.built=!0}call(t,e){return ot(()=>{t=le(t);let r;if(this.rank===1)throw new Zt("1D separable convolution is not implemented yet.");return this.rank===2&&(this.dataFormat==="channelsFirst"&&(t=re(t,[0,2,3,1])),r=Sb(t,this.depthwiseKernel.read(),this.pointwiseKernel.read(),this.strides,this.padding,this.dilationRate,"NHWC")),this.useBias&&(r=Qs(r,this.bias.read(),this.dataFormat)),this.activation!=null&&(r=this.activation.apply(r)),this.dataFormat==="channelsFirst"&&(r=re(r,[0,3,1,2])),r})}getConfig(){let t=super.getConfig();return delete t.rank,delete t.kernelInitializer,delete t.kernelRegularizer,delete t.kernelConstraint,t.depthwiseInitializer=cn(this.depthwiseInitializer),t.pointwiseInitializer=cn(this.pointwiseInitializer),t.depthwiseRegularizer=ze(this.depthwiseRegularizer),t.pointwiseRegularizer=ze(this.pointwiseRegularizer),t.depthwiseConstraint=Nn(this.depthwiseConstraint),t.pointwiseConstraint=Nn(this.pointwiseConstraint),t}}fI.className="SeparableConv";class qw extends fI{constructor(t){super(2,t)}}qw.className="SeparableConv2D",kt(qw);class Qh extends Zu{constructor(t){super(1,t);Qh.verifyArgs(t),this.inputSpec=[{ndim:3}]}getConfig(){let t=super.getConfig();return delete t.rank,delete t.dataFormat,t}static verifyArgs(t){if(typeof t.kernelSize!="number"&&!ew(t.kernelSize,"number",1,1))throw new Q(`Conv1D expects config.kernelSize to be number or number[] with length 1, but received ${JSON.stringify(t.kernelSize)}.`)}}Qh.className="Conv1D",kt(Qh);class jw extends Te{constructor(t){super(t);typeof t.cropping=="number"?this.cropping=[[t.cropping,t.cropping],[t.cropping,t.cropping]]:typeof t.cropping[0]=="number"?this.cropping=[[t.cropping[0],t.cropping[0]],[t.cropping[1],t.cropping[1]]]:this.cropping=t.cropping,this.dataFormat=t.dataFormat===void 0?"channelsLast":t.dataFormat,this.inputSpec=[{ndim:4}]}computeOutputShape(t){return this.dataFormat==="channelsFirst"?[t[0],t[1],t[2]-this.cropping[0][0]-this.cropping[0][1],t[3]-this.cropping[1][0]-this.cropping[1][1]]:[t[0],t[1]-this.cropping[0][0]-this.cropping[0][1],t[2]-this.cropping[1][0]-this.cropping[1][1],t[3]]}call(t,e){return ot(()=>{if(t=le(t),this.dataFormat==="channelsLast"){let r=Jd(t,this.cropping[0][0],t.shape[1]-this.cropping[0][0]-this.cropping[0][1],2);return Jd(r,this.cropping[1][0],t.shape[2]-this.cropping[1][1]-this.cropping[1][0],3)}else{let r=Jd(t,this.cropping[0][0],t.shape[2]-this.cropping[0][0]-this.cropping[0][1],3);return Jd(r,this.cropping[1][0],t.shape[3]-this.cropping[1][1]-this.cropping[1][0],4)}})}getConfig(){let t={cropping:this.cropping,dataFormat:this.dataFormat},e=super.getConfig();return Object.assign(t,e),t}}jw.className="Cropping2D",kt(jw);class Kw extends Te{constructor(t){super(t);this.DEFAULT_SIZE=[2,2],this.inputSpec=[{ndim:4}],this.size=t.size==null?this.DEFAULT_SIZE:t.size,this.dataFormat=t.dataFormat==null?"channelsLast":t.dataFormat}computeOutputShape(t){if(this.dataFormat==="channelsFirst"){let e=t[2]==null?null:this.size[0]*t[2],r=t[3]==null?null:this.size[1]*t[3];return[t[0],t[1],e,r]}else{let e=t[1]==null?null:this.size[0]*t[1],r=t[2]==null?null:this.size[1]*t[2];return[t[0],e,r,t[3]]}}call(t,e){return ot(()=>{let r=le(t),s=r.shape;if(this.dataFormat==="channelsFirst"){r=re(r,[0,2,3,1]);let u=this.size[0]*s[2],l=this.size[1]*s[3],h=r.resizeNearestNeighbor([u,l]);return re(h,[0,3,1,2])}else{let u=this.size[0]*s[1],l=this.size[1]*s[2];return r.resizeNearestNeighbor([u,l])}})}getConfig(){let t={size:this.size,dataFormat:this.dataFormat},e=super.getConfig();return Object.assign(t,e),t}}Kw.className="UpSampling2D",kt(Kw);function nG(n,t,e=[1,1],r="valid",s,u){return ot(()=>{s==null&&(s=ws()),un(s);let l=Uw(n,s);if(n.rank!==4)throw new Q(`Input for depthwiseConv2d is required to be 4-D, but is instead ${n.rank}-D`);if(t.rank!==4)throw new Q(`depthwiseKernel is required to be 4-D, but is instead ${t.rank}-D`);return l=pi(l,t,e,r==="same"?"same":"valid","NHWC",u),s==="channelsFirst"&&(l=re(l,[0,3,1,2])),l})}class Xw extends xm{constructor(t){super(2,t);this.depthwiseKernel=null,this.depthMultiplier=t.depthMultiplier==null?1:t.depthMultiplier,this.depthwiseInitializer=Xe(t.depthwiseInitializer||this.DEFAULT_KERNEL_INITIALIZER),this.depthwiseConstraint=In(t.depthwiseConstraint),this.depthwiseRegularizer=Ye(t.depthwiseRegularizer)}build(t){if(t=Be(t),t.length<4)throw new Q(`Inputs to DepthwiseConv2D should have rank 4. Received input shape: ${JSON.stringify(t)}.`);let e=this.dataFormat==="channelsFirst"?1:3;if(t[e]==null||t[e]<0)throw new Q(`The channel dimension of the inputs to DepthwiseConv2D should be defined, but is not (${t[e]}).`);let r=t[e],s=[this.kernelSize[0],this.kernelSize[1],r,this.depthMultiplier];this.depthwiseKernel=this.addWeight("depthwise_kernel",s,null,this.depthwiseInitializer,this.depthwiseRegularizer,!0,this.depthwiseConstraint),this.useBias?this.bias=this.addWeight("bias",[r*this.depthMultiplier],null,this.biasInitializer,this.biasRegularizer,!0,this.biasConstraint):this.bias=null,this.built=!0}call(t,e){return ot(()=>{t=le(t);let r=nG(t,this.depthwiseKernel.read(),this.strides,this.padding,this.dataFormat,null);return this.useBias&&(r=Qs(r,this.bias.read(),this.dataFormat)),this.activation!=null&&(r=this.activation.apply(r)),r})}computeOutputShape(t){t=Be(t);let e=this.dataFormat==="channelsFirst"?t[2]:t[1],r=this.dataFormat==="channelsFirst"?t[3]:t[2],s=this.dataFormat==="channelsFirst"?t[1]*this.depthMultiplier:t[3]*this.depthMultiplier,u=Ns(e,this.kernelSize[0],this.padding,this.strides[0]),l=Ns(r,this.kernelSize[1],this.padding,this.strides[1]);return this.dataFormat==="channelsFirst"?[t[0],s,u,l]:[t[0],u,l,s]}getConfig(){let t=super.getConfig();return t.depthMultiplier=this.depthMultiplier,t.depthwiseInitializer=cn(this.depthwiseInitializer),t.depthwiseRegularizer=ze(this.depthwiseRegularizer),t.depthwiseConstraint=Nn(this.depthwiseRegularizer),t}}Xw.className="DepthwiseConv2D",kt(Xw);function pI(n,t,e,r){if(Array.isArray(n)){if(t!=null||e!=null)throw new Q("When inputs is an array, neither initialState or constants should be provided");r!=null&&(e=n.slice(n.length-r,n.length),n=n.slice(0,n.length-r)),n.length>1&&(t=n.slice(1,n.length)),n=n[0]}function s(u){return u==null||Array.isArray(u)?u:[u]}return t=s(t),e=s(e),{inputs:n,initialState:t,constants:e}}function dI(n,t,e,r=!1,s,u,l=!1,h=!1){return ot(()=>{let p=t.shape.length;if(p<3)throw new Q(`Input should be at least 3D, but is ${p}D.`);let m=[1,0].concat(xs(2,p));if(t=re(t,m),u!=null)throw new Zt("The rnn() functoin of the deeplearn.js backend does not support constants yet.");l&&console.warn("Backend rnn(): the unroll = true option is not applicable to the imperative deeplearn.js backend."),s!=null&&(s=s.asType("bool").asType("float32"),s.rank===p-1&&(s=pr(s,-1)),s=re(s,m)),r&&(t=Wr(t,0),s!=null&&(s=Wr(s,0)));let y=[],b,x=e,S=t.shape[0],C=bs(t),I;s!=null&&(I=bs(s));for(let R=0;R<S;++R){let A=C[R],L=ot(()=>n(A,x));if(s==null)b=L[0],x=L[1];else{let _=ot(()=>{let B=I[R],V=Xn(B).sub(B),q=L[0].mul(B).add(x[0].mul(V)),j=x.map((et,tt)=>L[1][tt].mul(B).add(et.mul(V)));return{output:q,newStates:j}});b=_.output,x=_.newStates}h&&y.push(b)}let D;if(h){let R=1;D=mr(y,R)}return[b,D,x]})}class Is extends Te{constructor(t){super(t);let e;if(t.cell==null)throw new Q("cell property is missing for the constructor of RNN.");if(Array.isArray(t.cell)?e=new Sm({cells:t.cell}):e=t.cell,e.stateSize==null)throw new Q("The RNN cell should have an attribute `stateSize` (tuple of integers, one integer per RNN state).");this.cell=e,this.returnSequences=t.returnSequences==null?!1:t.returnSequences,this.returnState=t.returnState==null?!1:t.returnState,this.goBackwards=t.goBackwards==null?!1:t.goBackwards,this._stateful=t.stateful==null?!1:t.stateful,this.unroll=t.unroll==null?!1:t.unroll,this.supportsMasking=!0,this.inputSpec=[new Fn({ndim:3})],this.stateSpec=null,this.states_=null,this.numConstants=null,this.keptStates=[]}getStates(){if(this.states_==null){let t=Array.isArray(this.cell.stateSize)?this.cell.stateSize.length:1;return xs(0,t).map(e=>null)}else return this.states_}setStates(t){this.states_=t}computeOutputShape(t){yw(t)&&(t=t[0]),t=t;let e=this.cell.stateSize;Array.isArray(e)||(e=[e]);let r=e[0],s;if(this.returnSequences?s=[t[0],t[1],r]:s=[t[0],r],this.returnState){let u=[];for(let l of e)u.push([t[0],l]);return[s].concat(u)}else return s}computeMask(t,e){return ot(()=>{Array.isArray(e)&&(e=e[0]);let r=this.returnSequences?e:null;if(this.returnState){let s=this.states.map(u=>null);return[r].concat(s)}else return r})}get states(){if(this.states_==null){let t=Array.isArray(this.cell.stateSize)?this.cell.stateSize.length:1,e=[];for(let r=0;r<t;++r)e.push(null);return e}else return this.states_}set states(t){this.states_=t}build(t){let e=null;if(this.numConstants!=null)throw new Zt("Constants support is not implemented in RNN yet.");yw(t)&&(t=t[0]),t=t;let r=this.stateful?t[0]:null,s=t.slice(2);this.inputSpec[0]=new Fn({shape:[r,null,...s]});let u=[t[0]].concat(t.slice(2));if(e!=null)throw new Zt("Constants support is not implemented in RNN yet.");this.cell.build(u);let l;if(Array.isArray(this.cell.stateSize)?l=this.cell.stateSize:l=[this.cell.stateSize],this.stateSpec!=null){if(!K(this.stateSpec.map(h=>h.shape[h.shape.length-1]),l))throw new Q(`An initialState was passed that is not compatible with cell.stateSize. Received stateSpec=${this.stateSpec}; However cell.stateSize is ${this.cell.stateSize}`)}else this.stateSpec=l.map(h=>new Fn({shape:[null,h]}));this.stateful&&this.resetStates()}resetStates(t,e=!1){ot(()=>{if(!this.stateful)throw new Js("Cannot call resetStates() on an RNN Layer that is not stateful.");let r=this.inputSpec[0].shape[0];if(r==null)throw new Q("If an RNN is stateful, it needs to know its batch size. Specify the batch size of your input tensors: \n- If using a Sequential model, specify the batch size by passing a `batchInputShape` option to your first layer.\n- If using the functional API, specify the batch size by passing a `batchShape` option to your Input layer.");if(this.states_==null)Array.isArray(this.cell.stateSize)?this.states_=this.cell.stateSize.map(s=>Se([r,s])):this.states_=[Se([r,this.cell.stateSize])];else if(t==null)oe(this.states_),this.keptStates!=null&&(oe(this.keptStates),this.keptStates=[]),Array.isArray(this.cell.stateSize)?this.states_=this.cell.stateSize.map(s=>Se([r,s])):this.states_[0]=Se([r,this.cell.stateSize]);else{if(Array.isArray(t)||(t=[t]),t.length!==this.states_.length)throw new Q(`Layer ${this.name} expects ${this.states_.length} state(s), but it received ${t.length} state value(s). Input received: ${t}`);e===!0?this.keptStates.push(this.states_.slice()):oe(this.states_);for(let s=0;s<this.states_.length;++s){let u=t[s],l=Array.isArray(this.cell.stateSize)?this.cell.stateSize[s]:this.cell.stateSize,h=[r,l];if(!K(u.shape,h))throw new Q(`State ${s} is incompatible with layer ${this.name}: expected shape=${h}, received shape=${u.shape}`);this.states_[s]=u}}this.states_=this.states_.map(s=>An(s.clone()))})}apply(t,e){let r=e==null?null:e.initialState,s=e==null?null:e.constants;e==null&&(e={});let u=pI(t,r,s,this.numConstants);t=u.inputs,r=u.initialState,s=u.constants;let l=[],h=[];if(r!=null){e.initialState=r,l=l.concat(r),this.stateSpec=[];for(let m of r)this.stateSpec.push(new Fn({shape:m.shape}));h=h.concat(this.stateSpec)}s!=null&&(e.constants=s,l=l.concat(s),this.numConstants=s.length);let p=l[0]instanceof ks;if(p){let m=[t].concat(l),y=this.inputSpec.concat(h),b=this.inputSpec;this.inputSpec=y;let x=super.apply(m,e);return this.inputSpec=b,x}else return super.apply(t,e)}call(t,e){return ot(()=>{let r=e==null?null:e.mask,s=e==null?null:e.training,u=e==null?null:e.initialState;t=le(t),u==null&&(this.stateful?u=this.states_:u=this.getInitialState(t));let l=Array.isArray(this.cell.stateSize)?this.cell.stateSize.length:1;if(u.length!==l)throw new Q(`RNN Layer has ${l} state(s) but was passed ${u.length} initial state(s).`);this.unroll&&console.warn("Ignoring unroll = true for RNN layer, due to imperative backend.");let h={training:s},p=(C,I)=>{let D=this.cell.call([C].concat(I),h);return[D[0],D.slice(1)]},m=dI(p,t,u,this.goBackwards,r,null,this.unroll,this.returnSequences),y=m[0],b=m[1],x=m[2];this.stateful&&this.resetStates(x,s);let S=this.returnSequences?b:y;return this.returnState?[S].concat(x):S})}getInitialState(t){return ot(()=>{let e=Se(t.shape);return e=Xt(e,[1,2]),e=Gh(e),Array.isArray(this.cell.stateSize)?this.cell.stateSize.map(r=>r>1?cw(e,[1,r]):e):this.cell.stateSize>1?[cw(e,[1,this.cell.stateSize])]:[e]})}get trainableWeights(){return this.trainable?this.cell.trainableWeights:[]}get nonTrainableWeights(){return this.trainable?this.cell.nonTrainableWeights:this.cell.weights}setFastWeightInitDuringBuild(t){super.setFastWeightInitDuringBuild(t),this.cell!=null&&this.cell.setFastWeightInitDuringBuild(t)}getConfig(){let t=super.getConfig(),e={returnSequences:this.returnSequences,returnState:this.returnState,goBackwards:this.goBackwards,stateful:this.stateful,unroll:this.unroll};this.numConstants!=null&&(e.numConstants=this.numConstants);let r=this.cell.getConfig();return this.getClassName()===Is.className&&(e.cell={className:this.cell.getClassName(),config:r}),Object.assign({},r,t,e)}static fromConfig(t,e,r={}){let s=e.cell,u=Ss(s,r);return new t(Object.assign(e,{cell:u}))}}Is.className="RNN",kt(Is);class tc extends Te{}class Tm extends tc{constructor(t){super(t);this.DEFAULT_ACTIVATION="tanh",this.DEFAULT_KERNEL_INITIALIZER="glorotNormal",this.DEFAULT_RECURRENT_INITIALIZER="orthogonal",this.DEFAULT_BIAS_INITIALIZER="zeros",this.units=t.units,_n(this.units,"units"),this.activation=Ta(t.activation==null?this.DEFAULT_ACTIVATION:t.activation),this.useBias=t.useBias==null?!0:t.useBias,this.kernelInitializer=Xe(t.kernelInitializer||this.DEFAULT_KERNEL_INITIALIZER),this.recurrentInitializer=Xe(t.recurrentInitializer||this.DEFAULT_RECURRENT_INITIALIZER),this.biasInitializer=Xe(t.biasInitializer||this.DEFAULT_BIAS_INITIALIZER),this.kernelRegularizer=Ye(t.kernelRegularizer),this.recurrentRegularizer=Ye(t.recurrentRegularizer),this.biasRegularizer=Ye(t.biasRegularizer),this.kernelConstraint=In(t.kernelConstraint),this.recurrentConstraint=In(t.recurrentConstraint),this.biasConstraint=In(t.biasConstraint),this.dropout=ju([1,va([0,t.dropout==null?0:t.dropout])]),this.recurrentDropout=ju([1,va([0,t.recurrentDropout==null?0:t.recurrentDropout])]),this.stateSize=this.units,this.dropoutMask=null,this.recurrentDropoutMask=null}build(t){t=Be(t),this.kernel=this.addWeight("kernel",[t[t.length-1],this.units],null,this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint),this.recurrentKernel=this.addWeight("recurrent_kernel",[this.units,this.units],null,this.recurrentInitializer,this.recurrentRegularizer,!0,this.recurrentConstraint),this.useBias?this.bias=this.addWeight("bias",[this.units],null,this.biasInitializer,this.biasRegularizer,!0,this.biasConstraint):this.bias=null,this.built=!0}call(t,e){return ot(()=>{if(t=t,t.length!==2)throw new Q(`SimpleRNNCell expects 2 input Tensors, got ${t.length}.`);let r=t[1];t=t[0];let s=e.training==null?!1:e.training;0<this.dropout&&this.dropout<1&&this.dropoutMask==null&&(this.dropoutMask=ka({ones:()=>Xn(t),rate:this.dropout,training:s})),0<this.recurrentDropout&&this.recurrentDropout<1&&this.recurrentDropoutMask==null&&(this.recurrentDropoutMask=ka({ones:()=>Xn(r),rate:this.recurrentDropout,training:s}));let u,l=this.dropoutMask,h=this.recurrentDropoutMask;l!=null?u=Zs(st(t,l),this.kernel.read()):u=Zs(t,this.kernel.read()),this.bias!=null&&(u=Qs(u,this.bias.read())),h!=null&&(r=st(r,h));let p=Nt(u,Zs(r,this.recurrentKernel.read()));return this.activation!=null&&(p=this.activation.apply(p)),[p,p]})}getConfig(){let t=super.getConfig(),e={units:this.units,activation:xa(this.activation),useBias:this.useBias,kernelInitializer:cn(this.kernelInitializer),recurrentInitializer:cn(this.recurrentInitializer),biasInitializer:cn(this.biasInitializer),kernelRegularizer:ze(this.kernelRegularizer),recurrentRegularizer:ze(this.recurrentRegularizer),biasRegularizer:ze(this.biasRegularizer),activityRegularizer:ze(this.activityRegularizer),kernelConstraint:Nn(this.kernelConstraint),recurrentConstraint:Nn(this.recurrentConstraint),biasConstraint:Nn(this.biasConstraint),dropout:this.dropout,recurrentDropout:this.recurrentDropout};return Object.assign({},t,e)}}Tm.className="SimpleRNNCell",kt(Tm);class Yw extends Is{constructor(t){t.cell=new Tm(t),super(t)}call(t,e){return ot(()=>{this.cell.dropoutMask!=null&&(oe(this.cell.dropoutMask),this.cell.dropoutMask=null),this.cell.recurrentDropoutMask!=null&&(oe(this.cell.recurrentDropoutMask),this.cell.recurrentDropoutMask=null);let r=e==null?null:e.mask,s=e==null?null:e.training,u=e==null?null:e.initialState;return super.call(t,{mask:r,training:s,initialState:u})})}static fromConfig(t,e){return new t(e)}}Yw.className="SimpleRNN",kt(Yw);class km extends tc{constructor(t){super(t);if(this.DEFAULT_ACTIVATION="tanh",this.DEFAULT_RECURRENT_ACTIVATION="hardSigmoid",this.DEFAULT_KERNEL_INITIALIZER="glorotNormal",this.DEFAULT_RECURRENT_INITIALIZER="orthogonal",this.DEFAULT_BIAS_INITIALIZER="zeros",t.resetAfter)throw new Q("GRUCell does not support reset_after parameter set to true.");this.units=t.units,_n(this.units,"units"),this.activation=Ta(t.activation===void 0?this.DEFAULT_ACTIVATION:t.activation),this.recurrentActivation=Ta(t.recurrentActivation===void 0?this.DEFAULT_RECURRENT_ACTIVATION:t.recurrentActivation),this.useBias=t.useBias==null?!0:t.useBias,this.kernelInitializer=Xe(t.kernelInitializer||this.DEFAULT_KERNEL_INITIALIZER),this.recurrentInitializer=Xe(t.recurrentInitializer||this.DEFAULT_RECURRENT_INITIALIZER),this.biasInitializer=Xe(t.biasInitializer||this.DEFAULT_BIAS_INITIALIZER),this.kernelRegularizer=Ye(t.kernelRegularizer),this.recurrentRegularizer=Ye(t.recurrentRegularizer),this.biasRegularizer=Ye(t.biasRegularizer),this.kernelConstraint=In(t.kernelConstraint),this.recurrentConstraint=In(t.recurrentConstraint),this.biasConstraint=In(t.biasConstraint),this.dropout=ju([1,va([0,t.dropout==null?0:t.dropout])]),this.recurrentDropout=ju([1,va([0,t.recurrentDropout==null?0:t.recurrentDropout])]),this.implementation=t.implementation,this.stateSize=this.units,this.dropoutMask=null,this.recurrentDropoutMask=null}build(t){t=Be(t);let e=t[t.length-1];this.kernel=this.addWeight("kernel",[e,this.units*3],null,this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint),this.recurrentKernel=this.addWeight("recurrent_kernel",[this.units,this.units*3],null,this.recurrentInitializer,this.recurrentRegularizer,!0,this.recurrentConstraint),this.useBias?this.bias=this.addWeight("bias",[this.units*3],null,this.biasInitializer,this.biasRegularizer,!0,this.biasConstraint):this.bias=null,this.built=!0}call(t,e){return ot(()=>{if(t=t,t.length!==2)throw new Q(`GRUCell expects 2 input Tensors (inputs, h, c), got ${t.length}.`);let r=e.training==null?!1:e.training,s=t[1];t=t[0],0<this.dropout&&this.dropout<1&&this.dropoutMask==null&&(this.dropoutMask=ka({ones:()=>Xn(t),rate:this.dropout,training:r,count:3})),0<this.recurrentDropout&&this.recurrentDropout<1&&this.recurrentDropoutMask==null&&(this.recurrentDropoutMask=ka({ones:()=>Xn(s),rate:this.recurrentDropout,training:r,count:3}));let u=this.dropoutMask,l=this.recurrentDropoutMask,h,p,m;0<this.dropout&&this.dropout<1&&(t=st(t,u[0]));let y=Zs(t,this.kernel.read());this.useBias&&(y=Qs(y,this.bias.read())),0<this.recurrentDropout&&this.recurrentDropout<1&&(s=st(s,l[0]));let b=this.recurrentKernel.read(),[x,S]=Er(b,[2*this.units,this.units],b.rank-1),C=Zs(s,x),[I,D,R]=Er(y,3,y.rank-1),[A,L]=Er(C,2,C.rank-1);h=this.recurrentActivation.apply(Nt(I,A)),p=this.recurrentActivation.apply(Nt(D,L));let _=Zs(st(p,s),S);m=this.activation.apply(Nt(R,_));let B=Nt(st(h,s),st(Nt(1,on(h)),m));return[B,B]})}getConfig(){let t=super.getConfig(),e={units:this.units,activation:xa(this.activation),recurrentActivation:xa(this.recurrentActivation),useBias:this.useBias,kernelInitializer:cn(this.kernelInitializer),recurrentInitializer:cn(this.recurrentInitializer),biasInitializer:cn(this.biasInitializer),kernelRegularizer:ze(this.kernelRegularizer),recurrentRegularizer:ze(this.recurrentRegularizer),biasRegularizer:ze(this.biasRegularizer),activityRegularizer:ze(this.activityRegularizer),kernelConstraint:Nn(this.kernelConstraint),recurrentConstraint:Nn(this.recurrentConstraint),biasConstraint:Nn(this.biasConstraint),dropout:this.dropout,recurrentDropout:this.recurrentDropout,implementation:this.implementation,resetAfter:!1};return Object.assign({},t,e)}}km.className="GRUCell",kt(km);class Jw extends Is{constructor(t){t.implementation===0&&console.warn("`implementation=0` has been deprecated, and now defaults to `implementation=1`. Please update your layer call."),t.cell=new km(t),super(t)}call(t,e){return ot(()=>{this.cell.dropoutMask!=null&&(oe(this.cell.dropoutMask),this.cell.dropoutMask=null),this.cell.recurrentDropoutMask!=null&&(oe(this.cell.recurrentDropoutMask),this.cell.recurrentDropoutMask=null);let r=e==null?null:e.mask,s=e==null?null:e.training,u=e==null?null:e.initialState;return super.call(t,{mask:r,training:s,initialState:u})})}static fromConfig(t,e){return e.implmentation===0&&(e.implementation=1),new t(e)}}Jw.className="GRU",kt(Jw);class tf extends tc{constructor(t){super(t);this.DEFAULT_ACTIVATION="tanh",this.DEFAULT_RECURRENT_ACTIVATION="hardSigmoid",this.DEFAULT_KERNEL_INITIALIZER="glorotNormal",this.DEFAULT_RECURRENT_INITIALIZER="orthogonal",this.DEFAULT_BIAS_INITIALIZER="zeros",this.units=t.units,_n(this.units,"units"),this.activation=Ta(t.activation===void 0?this.DEFAULT_ACTIVATION:t.activation),this.recurrentActivation=Ta(t.recurrentActivation===void 0?this.DEFAULT_RECURRENT_ACTIVATION:t.recurrentActivation),this.useBias=t.useBias==null?!0:t.useBias,this.kernelInitializer=Xe(t.kernelInitializer||this.DEFAULT_KERNEL_INITIALIZER),this.recurrentInitializer=Xe(t.recurrentInitializer||this.DEFAULT_RECURRENT_INITIALIZER),this.biasInitializer=Xe(t.biasInitializer||this.DEFAULT_BIAS_INITIALIZER),this.unitForgetBias=t.unitForgetBias,this.kernelRegularizer=Ye(t.kernelRegularizer),this.recurrentRegularizer=Ye(t.recurrentRegularizer),this.biasRegularizer=Ye(t.biasRegularizer),this.kernelConstraint=In(t.kernelConstraint),this.recurrentConstraint=In(t.recurrentConstraint),this.biasConstraint=In(t.biasConstraint),this.dropout=ju([1,va([0,t.dropout==null?0:t.dropout])]),this.recurrentDropout=ju([1,va([0,t.recurrentDropout==null?0:t.recurrentDropout])]),this.implementation=t.implementation,this.stateSize=[this.units,this.units],this.dropoutMask=null,this.recurrentDropoutMask=null}build(t){var e;t=Be(t);let r=t[t.length-1];this.kernel=this.addWeight("kernel",[r,this.units*4],null,this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint),this.recurrentKernel=this.addWeight("recurrent_kernel",[this.units,this.units*4],null,this.recurrentInitializer,this.recurrentRegularizer,!0,this.recurrentConstraint);let s;if(this.useBias){if(this.unitForgetBias){let u=this.biasInitializer,l=this.units;s=new(e=class extends ss{apply(p,m){let y=u.apply([l]),b=new Qd().apply([l]),x=u.apply([l*2]);return lN(lN(y,b),x)}},e.className="CustomInit",e)}else s=this.biasInitializer;this.bias=this.addWeight("bias",[this.units*4],null,s,this.biasRegularizer,!0,this.biasConstraint)}else this.bias=null;this.built=!0}call(t,e){return ot(()=>{let r=e.training==null?!1:e.training;if(t=t,t.length!==3)throw new Q(`LSTMCell expects 3 input Tensors (inputs, h, c), got ${t.length}.`);let s=t[1],u=t[2];t=t[0],0<this.dropout&&this.dropout<1&&this.dropoutMask==null&&(this.dropoutMask=ka({ones:()=>Xn(t),rate:this.dropout,training:r,count:4})),0<this.recurrentDropout&&this.recurrentDropout<1&&this.recurrentDropoutMask==null&&(this.recurrentDropoutMask=ka({ones:()=>Xn(s),rate:this.recurrentDropout,training:r,count:4}));let l=this.dropoutMask,h=this.recurrentDropoutMask,p,m,y,b;0<this.dropout&&this.dropout<1&&(t=st(t,l[0]));let x=Zs(t,this.kernel.read());0<this.recurrentDropout&&this.recurrentDropout<1&&(s=st(s,h[0])),x=Nt(x,Zs(s,this.recurrentKernel.read())),this.useBias&&(x=Qs(x,this.bias.read()));let[S,C,I,D]=Er(x,4,x.rank-1);p=this.recurrentActivation.apply(S),m=this.recurrentActivation.apply(C),y=Nt(st(m,u),st(p,this.activation.apply(I))),b=this.recurrentActivation.apply(D);let R=st(b,this.activation.apply(y));return[R,R,y]})}getConfig(){let t=super.getConfig(),e={units:this.units,activation:xa(this.activation),recurrentActivation:xa(this.recurrentActivation),useBias:this.useBias,kernelInitializer:cn(this.kernelInitializer),recurrentInitializer:cn(this.recurrentInitializer),biasInitializer:cn(this.biasInitializer),unitForgetBias:this.unitForgetBias,kernelRegularizer:ze(this.kernelRegularizer),recurrentRegularizer:ze(this.recurrentRegularizer),biasRegularizer:ze(this.biasRegularizer),activityRegularizer:ze(this.activityRegularizer),kernelConstraint:Nn(this.kernelConstraint),recurrentConstraint:Nn(this.recurrentConstraint),biasConstraint:Nn(this.biasConstraint),dropout:this.dropout,recurrentDropout:this.recurrentDropout,implementation:this.implementation};return Object.assign({},t,e)}}tf.className="LSTMCell",kt(tf);class Zw extends Is{constructor(t){t.implementation===0&&console.warn("`implementation=0` has been deprecated, and now defaults to `implementation=1`. Please update your layer call."),t.cell=new tf(t),super(t)}call(t,e){return ot(()=>{this.cell.dropoutMask!=null&&(oe(this.cell.dropoutMask),this.cell.dropoutMask=null),this.cell.recurrentDropoutMask!=null&&(oe(this.cell.recurrentDropoutMask),this.cell.recurrentDropoutMask=null);let r=e==null?null:e.mask,s=e==null?null:e.training,u=e==null?null:e.initialState;return super.call(t,{mask:r,training:s,initialState:u})})}static fromConfig(t,e){return e.implmentation===0&&(e.implementation=1),new t(e)}}Zw.className="LSTM",kt(Zw);class Sm extends tc{constructor(t){super(t);this.cells=t.cells}get stateSize(){let t=[];for(let e of this.cells.slice().reverse())Array.isArray(e.stateSize)?t.push(...e.stateSize):t.push(e.stateSize);return t}call(t,e){return ot(()=>{t=t;let r=t.slice(1),s=[];for(let h of this.cells.slice().reverse())Array.isArray(h.stateSize)?s.push(r.splice(0,h.stateSize.length)):s.push(r.splice(0,1));s.reverse();let u=[],l;for(let h=0;h<this.cells.length;++h){let p=this.cells[h];r=s[h],h===0?l=[t[0]].concat(r):l=[l[0]].concat(r),l=p.call(l,e),u.push(l.slice(1))}r=[];for(let h of u.slice().reverse())r.push(...h);return[l[0]].concat(r)})}build(t){yw(t)&&(t=t[0]),t=t;let e;this.cells.forEach((r,s)=>{Si(`RNNCell_${s}`,()=>{r.build(t),Array.isArray(r.stateSize)?e=r.stateSize[0]:e=r.stateSize,t=[t[0],e]})}),this.built=!0}getConfig(){let t=super.getConfig(),e=u=>({className:u.getClassName(),config:u.getConfig()}),r=this.cells.map(e),s={cells:r};return Object.assign({},t,s)}static fromConfig(t,e,r={}){let s=[];for(let u of e.cells)s.push(Ss(u,r));return new t({cells:s})}get trainableWeights(){if(!this.trainable)return[];let t=[];for(let e of this.cells)t.push(...e.trainableWeights);return t}get nonTrainableWeights(){let t=[];for(let e of this.cells)t.push(...e.nonTrainableWeights);if(!this.trainable){let e=[];for(let r of this.cells)e.push(...r.trainableWeights);return e.concat(t)}return t}getWeights(){let t=[];for(let e of this.cells)t.push(...e.weights);return bw(t)}setWeights(t){let e=[];for(let r of this.cells){let s=r.weights.length,u=t.splice(s);for(let l=0;l<r.weights.length;++l)e.push([r.weights[l],u[l]])}ww(e)}}Sm.className="StackedRNNCells",kt(Sm);function ka(n){let{ones:t,rate:e,training:r=!1,count:s=1}=n,u=()=>fN(t(),e),l=()=>qh(u,t,r);if(!s||s<=1)return An(l().clone());let h=Array(s).fill(void 0).map(l);return h.map(p=>An(p.clone()))}var rG=function(n,t){var e={};for(var r in n)Object.prototype.hasOwnProperty.call(n,r)&&t.indexOf(r)<0&&(e[r]=n[r]);if(n!=null&&typeof Object.getOwnPropertySymbols=="function")for(var s=0,r=Object.getOwnPropertySymbols(n);s<r.length;s++)t.indexOf(r[s])<0&&Object.prototype.propertyIsEnumerable.call(n,r[s])&&(e[r[s]]=n[r[s]]);return e};class oft extends tc{}class mI extends Is{constructor(t){if(t.unroll)throw new Zt("Unrolling is not possible with convolutional RNNs.");if(Array.isArray(t.cell))throw new Zt("It is not possible at the moment to stack convolutional cells.");super(t);this.inputSpec=[new Fn({ndim:5})]}call(t,e){return ot(()=>{if(this.cell.dropoutMask!=null&&(oe(this.cell.dropoutMask),this.cell.dropoutMask=null),this.cell.recurrentDropoutMask!=null&&(oe(this.cell.recurrentDropoutMask),this.cell.recurrentDropoutMask=null),e&&e.constants)throw new Q("ConvRNN2D cell does not support constants");let r=e==null?null:e.mask,s=e==null?null:e.training,u=e==null?null:e.initialState;return super.call(t,{mask:r,training:s,initialState:u})})}computeOutputShape(t){let e=this.computeSingleOutputShape(t);return this.returnSequences||(e=[e[0],...e.slice(2)]),this.returnState&&(e=[e,...Array(2).fill([t[0],...e.slice(-3)])]),e}getInitialState(t){return ot(()=>{let{stateSize:e}=this.cell,r=t.shape,s=this.computeSingleOutputShape(r),u=[s[0],...s.slice(2)],l=Se(u);return Array.isArray(e)?Array(e.length).fill(l):[l]})}resetStates(t,e=!1){ot(()=>{if(!this.stateful)throw new Js("Cannot call resetStates() on an RNN Layer that is not stateful.");let r=this.inputSpec[0].shape,s=this.computeSingleOutputShape(r),u=[s[0],...s.slice(2)],l=r[0];if(l==null)throw new Q("If an RNN is stateful, it needs to know its batch size. Specify the batch size of your input tensors: \n- If using a Sequential model, specify the batch size by passing a `batchInputShape` option to your first layer.\n- If using the functional API, specify the batch size by passing a `batchShape` option to your Input layer.");if(this.getStates()==null)Array.isArray(this.cell.stateSize)?this.states_=this.cell.stateSize.map(()=>Se(u)):this.states_=[Se(u)];else if(t==null)oe(this.states_),this.keptStates!=null&&(oe(this.keptStates),this.keptStates=[]),Array.isArray(this.cell.stateSize)?this.states_=this.cell.stateSize.map(()=>Se(u)):this.states_[0]=Se(u);else{if(Array.isArray(t)||(t=[t]),t.length!==this.states_.length)throw new Q(`Layer ${this.name} expects ${this.states_.length} state(s), but it received ${t.length} state value(s). Input received: ${t}`);e?this.keptStates.push(this.states_.slice()):oe(this.states_);for(let h=0;h<this.states_.length;++h){let p=t[h],m=u;if(!K(p.shape,m))throw new Q(`State ${h} is incompatible with layer ${this.name}: expected shape=${m}, received shape=${p.shape}`);this.states_[h]=p}}this.states_=this.states_.map(h=>An(h.clone()))})}computeSingleOutputShape(t){let{dataFormat:e,filters:r,kernelSize:s,padding:u,strides:l,dilationRate:h}=this.cell,p=e==="channelsFirst",m=t[p?3:2],y=t[p?4:3],b=Ns(m,s[0],u,l[0],h[0]),x=Ns(y,s[1],u,l[1],h[1]),S=[...t.slice(0,2),...p?[r,b,x]:[b,x,r]];return S}}mI.className="ConvRNN2D";class Cm extends tf{constructor(t){let{filters:e,kernelSize:r,strides:s,padding:u,dataFormat:l,dilationRate:h}=t;super(Object.assign({},t,{units:e}));this.filters=e,_n(this.filters,"filters"),this.kernelSize=Ju(r,2,"kernelSize"),this.kernelSize.forEach(p=>_n(p,"kernelSize")),this.strides=Ju(s||1,2,"strides"),this.strides.forEach(p=>_n(p,"strides")),this.padding=u||"valid",Ur(this.padding),this.dataFormat=l||"channelsLast",un(this.dataFormat),this.dilationRate=Ju(h||1,2,"dilationRate"),this.dilationRate.forEach(p=>_n(p,"dilationRate"))}build(t){var e;t=Be(t);let r=this.dataFormat==="channelsFirst"?1:t.length-1;if(t[r]==null)throw new Q(`The channel dimension of the input should be defined. Found ${t[r]}`);let s=t[r],u=4,l=this.kernelSize.concat([s,this.filters*u]);this.kernel=this.addWeight("kernel",l,null,this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint);let h=this.kernelSize.concat([this.filters,this.filters*u]);if(this.recurrentKernel=this.addWeight("recurrent_kernel",h,null,this.recurrentInitializer,this.recurrentRegularizer,!0,this.recurrentConstraint),this.useBias){let p;if(this.unitForgetBias){let m=this.biasInitializer,y=this.filters;p=new(e=class extends ss{apply(x,S){let C=m.apply([y]),I=vs([y]),D=m.apply([y*2]);return uw([C,I,D])}},e.className="CustomInit",e)}else p=this.biasInitializer;this.bias=this.addWeight("bias",[this.filters*u],null,p,this.biasRegularizer,!0,this.biasConstraint)}this.built=!0}call(t,e){return ot(()=>{if(t.length!==3)throw new Q(`ConvLSTM2DCell expects 3 input Tensors (inputs, h, c), got ${t.length}.`);let r=e.training||!1,s=t[0],u=t[1],l=t[2],h=4;0<this.dropout&&this.dropout<1&&this.dropoutMask==null&&(this.dropoutMask=ka({ones:()=>Xn(s),rate:this.dropout,training:r,count:h}));let p=this.dropoutMask,m=(Dt,$t,Lt)=>!$t||!$t[Lt]?Dt:st($t[Lt],Dt),y=m(s,p,0),b=m(s,p,1),x=m(s,p,2),S=m(s,p,3);0<this.recurrentDropout&&this.recurrentDropout<1&&this.recurrentDropoutMask==null&&(this.recurrentDropoutMask=ka({ones:()=>Xn(u),rate:this.recurrentDropout,training:r,count:h}));let C=this.recurrentDropoutMask,I=m(u,C,0),D=m(u,C,1),R=m(u,C,2),A=m(u,C,3),L=3,[_,B,V,q]=Er(this.kernel.read(),h,L),[j,et,tt,ht]=this.useBias?Er(this.bias.read(),h):[null,null,null,null];y=this.inputConv(y,_,j,this.padding),b=this.inputConv(b,B,et,this.padding),x=this.inputConv(x,V,tt,this.padding),S=this.inputConv(S,q,ht,this.padding);let[gt,vt,bt,yt]=Er(this.recurrentKernel.read(),h,L);I=this.recurrentConv(I,gt),D=this.recurrentConv(D,vt),R=this.recurrentConv(R,bt),A=this.recurrentConv(A,yt);let mt=this.recurrentActivation.apply(Nt(y,I)),xt=this.recurrentActivation.apply(Nt(b,D)),wt=Nt(st(xt,l),st(mt,this.activation.apply(Nt(x,R)))),Tt=st(this.recurrentActivation.apply(Nt(S,A)),this.activation.apply(wt));return[Tt,Tt,wt]})}getConfig(){let t=super.getConfig(),{units:e}=t,r=rG(t,["units"]),s={filters:this.filters,kernelSize:this.kernelSize,padding:this.padding,dataFormat:this.dataFormat,dilationRate:this.dilationRate,strides:this.strides};return Object.assign({},r,s)}inputConv(t,e,r,s){let u=wo(t,e,this.strides,s||"valid",this.dataFormat==="channelsFirst"?"NCHW":"NHWC",this.dilationRate);return r?Qs(u,r,this.dataFormat):u}recurrentConv(t,e){let r=1;return wo(t,e,r,"same",this.dataFormat==="channelsFirst"?"NCHW":"NHWC")}}Cm.className="ConvLSTM2DCell",kt(Cm);class Qw extends mI{constructor(t){let e=new Cm(t);super(Object.assign({},t,{cell:e}))}static fromConfig(t,e){return new t(e)}}Qw.className="ConvLSTM2D",kt(Qw);class Nm extends Te{constructor(t){super(t);this.rate=Math.max(Math.min(t.rate,1),0),this.noiseShape=t.noiseShape,this.seed=t.seed,this.supportsMasking=!0}getNoiseShape(t){if(this.noiseShape==null)return this.noiseShape;let e=t.shape,r=[];for(let s=0;s<this.noiseShape.length;++s)r.push(this.noiseShape[s]==null?e[s]:this.noiseShape[s]);return r}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t);if(0<this.rate&&this.rate<1){let s=e.training==null?!1:e.training,u=this.getNoiseShape(r),l=qh(()=>fN(r,this.rate,u,this.seed),()=>r,s);return l}return t})}getConfig(){let t={rate:this.rate,noiseShape:this.noiseShape,seed:this.seed},e=super.getConfig();return Object.assign(t,e),t}dispose(){return super.dispose()}}Nm.className="Dropout",kt(Nm);class t0 extends Nm{constructor(t){super(t);this.inputSpec=[{ndim:3}]}getNoiseShape(t){let e=t.shape;return[e[0],1,e[2]]}}t0.className="SpatialDropout1D",kt(t0);class e0 extends Te{constructor(t){super(t);if(this.activation=null,this.useBias=!0,this.kernel=null,this.bias=null,this.DEFAULT_KERNEL_INITIALIZER="glorotNormal",this.DEFAULT_BIAS_INITIALIZER="zeros",t.batchInputShape==null&&t.inputShape==null&&t.inputDim!=null){let e=null;t.batchSize!=null&&(e=t.batchSize),this.batchInputShape=[e,t.inputDim]}this.units=t.units,_n(this.units,"units"),this.activation=Ta(t.activation),t.useBias!=null&&(this.useBias=t.useBias),this.kernelInitializer=Xe(t.kernelInitializer||this.DEFAULT_KERNEL_INITIALIZER),this.biasInitializer=Xe(t.biasInitializer||this.DEFAULT_BIAS_INITIALIZER),this.kernelConstraint=In(t.kernelConstraint),this.biasConstraint=In(t.biasConstraint),this.kernelRegularizer=Ye(t.kernelRegularizer),this.biasRegularizer=Ye(t.biasRegularizer),this.activityRegularizer=Ye(t.activityRegularizer),this.supportsMasking=!0,this.inputSpec=[{minNDim:2}]}build(t){t=Be(t);let e=t[t.length-1];this.kernel==null&&(this.kernel=this.addWeight("kernel",[e,this.units],null,this.kernelInitializer,this.kernelRegularizer,!0,this.kernelConstraint),this.useBias&&(this.bias=this.addWeight("bias",[this.units],null,this.biasInitializer,this.biasRegularizer,!0,this.biasConstraint))),this.inputSpec=[{minNDim:2,axes:{[-1]:e}}],this.built=!0}computeOutputShape(t){t=Be(t);let e=t.slice();return e[e.length-1]=this.units,e}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t),s=eN(this.activation.getClassName()),u;return s!=null?u=Zs(r,this.kernel.read(),s,this.bias?this.bias.read():null):(u=Zs(r,this.kernel.read()),this.bias!=null&&(u=Qs(u,this.bias.read())),this.activation!=null&&(u=this.activation.apply(u))),u})}getConfig(){let t={units:this.units,activation:xa(this.activation),useBias:this.useBias,kernelInitializer:cn(this.kernelInitializer),biasInitializer:cn(this.biasInitializer),kernelRegularizer:ze(this.kernelRegularizer),biasRegularizer:ze(this.biasRegularizer),activityRegularizer:ze(this.activityRegularizer),kernelConstraint:Nn(this.kernelConstraint),biasConstraint:Nn(this.biasConstraint)},e=super.getConfig();return Object.assign(t,e),t}}e0.className="Dense",kt(e0);class n0 extends Te{constructor(t){t=t||{},super(t),this.inputSpec=[{minNDim:3}],this.dataFormat=t.dataFormat}computeOutputShape(t){t=Be(t);for(let e of t.slice(1))if(e==null)throw new Q(`The shape of the input to "Flatten" is not fully defined (got ${t.slice(1)}). Make sure to pass a complete "input_shape" or "batch_input_shape" argument to the first layer in your model.`);return[t[0],ga(t,1)]}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t);if(this.dataFormat==="channelsFirst"&&r.rank>1){let s=[0];for(let u=2;u<r.rank;++u)s.push(u);s.push(1),r=r.transpose(s)}return NV(r)})}getConfig(){let t={};this.dataFormat!=null&&(t.dataFormat=this.dataFormat);let e=super.getConfig();return Object.assign(t,e),t}}n0.className="Flatten",kt(n0);class r0 extends Te{constructor(t){super(t);this.supportsMasking=!0,this.activation=Ta(t.activation)}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t);return this.activation.apply(r)})}getConfig(){let t={activation:xa(this.activation)},e=super.getConfig();return Object.assign(t,e),t}}r0.className="Activation",kt(r0);class s0 extends Te{constructor(t){super(t);this.n=t.n,this.inputSpec=[{ndim:2}]}computeOutputShape(t){return[t[0],this.n,t[1]]}call(t,e){return ot(()=>(t=le(t),SV(t,this.n)))}getConfig(){let t={n:this.n},e=super.getConfig();return Object.assign(t,e),t}}s0.className="RepeatVector",kt(s0);class o0 extends Te{constructor(t){super(t);this.targetShape=t.targetShape;for(let e=0;e<this.targetShape.length;++e)this.isUnknown(this.targetShape[e])&&(this.targetShape[e]=null)}isUnknown(t){return t<0||t==null}fixUnknownDimension(t,e){let r="Total size of new array must be unchanged.",s=e.slice(),u=1,l=null;for(let p=0;p<s.length;++p){let m=s[p];if(this.isUnknown(m))if(l===null)l=p;else throw new Q("Can only specifiy one unknown dimension.");else u*=m}let h=ga(t);if(l!==null){if(u===0||h%u!==0)throw new Q(r);s[l]=h/u}else if(h!==u)throw new Q(r);return s}computeOutputShape(t){let e=!1;for(let r=0;r<t.length;++r)if(this.isUnknown(t[r])){e=!0;break}return e?t.slice(0,1).concat(this.targetShape):t.slice(0,1).concat(this.fixUnknownDimension(t.slice(1),this.targetShape))}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t),s=r.shape,u=s.slice(0,1).concat(this.fixUnknownDimension(s.slice(1),this.targetShape));return r.reshape(u)})}getConfig(){let t={targetShape:this.targetShape},e=super.getConfig();return Object.assign(t,e),t}}o0.className="Reshape",kt(o0);class a0 extends Te{constructor(t){super(t);if(t.dims==null)throw new Error("Required configuration field `dims` is missing during Permute constructor call.");if(!Array.isArray(t.dims))throw new Error(`Permute constructor requires \`dims\` to be an Array, but received ${t.dims} instead.`);let e=xs(1,t.dims.length+1);if(!K(t.dims.slice().sort(),e))throw new Error("Invalid permutation `dims`: "+JSON.stringify(t.dims)+" `dims` must contain consecutive integers starting from 1.");this.dims=t.dims,this.dimsIncludingBatch=[0].concat(this.dims),this.inputSpec=[new Fn({ndim:this.dims.length+1})]}computeOutputShape(t){t=Be(t);let e=t.slice();return this.dims.forEach((r,s)=>{e[s+1]=t[r]}),e}call(t,e){return re(le(t),this.dimsIncludingBatch)}getConfig(){let t={dims:this.dims},e=super.getConfig();return Object.assign(t,e),t}}a0.className="Permute",kt(a0);class i0 extends Te{constructor(t){super(t==null?{}:t);this.supportsMasking=!0,t!=null?this.maskValue=t.maskValue==null?0:t.maskValue:this.maskValue=0}computeOutputShape(t){return t}getConfig(){let t=super.getConfig(),e={maskValue:this.maskValue};return Object.assign(e,t),e}computeMask(t,e){let r=le(t),s=-1;return hh(ha(r,this.maskValue),s)}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t),s=-1,u=!0,l=hh(ha(r,this.maskValue),s,u),h=r.mul(l.asType(r.dtype));return h})}}i0.className="Masking",kt(i0);class u0 extends Te{constructor(t){super(t);if(this.embeddings=null,this.DEFAULT_EMBEDDINGS_INITIALIZER="randomUniform",t.batchInputShape==null&&t.inputShape==null){let e=null;t.batchSize!=null&&(e=t.batchSize),t.inputLength==null?this.batchInputShape=[e,null]:this.batchInputShape=[e].concat(Ge(t.inputLength))}this.inputDim=t.inputDim,_n(this.inputDim,"inputDim"),this.outputDim=t.outputDim,_n(this.outputDim,"outputDim"),this.embeddingsInitializer=Xe(t.embeddingsInitializer||this.DEFAULT_EMBEDDINGS_INITIALIZER),this.embeddingsRegularizer=Ye(t.embeddingsRegularizer),this.activityRegularizer=Ye(t.activityRegularizer),this.embeddingsConstraint=In(t.embeddingsConstraint),this.maskZero=t.maskZero,this.supportsMasking=t.maskZero,this.inputLength=t.inputLength}build(t){this.embeddings=this.addWeight("embeddings",[this.inputDim,this.outputDim],this.dtype,this.embeddingsInitializer,this.embeddingsRegularizer,!0,this.embeddingsConstraint),this.built=!0}warnOnIncompatibleInputShape(t){}computeMask(t,e){return ot(()=>this.maskZero?(t=le(t),ha(t,fe(t))):null)}computeOutputShape(t){if(t=Be(t),this.inputLength==null)return[...t,this.outputDim];let e=Ge(this.inputLength);if(e.length!==t.length-1)throw new Q(`"inputLength" is ${this.inputLength}, but received input shape has shape ${t}`);{let r=0;for(let s=0;s<e.length;++s){let u=e[s],l=t[s+1];if(u!=null&&l!=null&&u!==l)throw new Q(`"inputLength" is ${this.inputLength}, but received input shape has shape ${t}`);u==null&&(e[r]=l),r++}}return[t[0],...e,this.outputDim]}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t);r.dtype!=="int32"&&(r=Uh(r,"int32"));let s=hN(this.embeddings.read(),r.as1D());return s.reshape(Be(this.computeOutputShape(r.shape)))})}getConfig(){let t={inputDim:this.inputDim,outputDim:this.outputDim,embeddingsInitializer:cn(this.embeddingsInitializer),embeddingsRegularizer:ze(this.embeddingsRegularizer),activityRegularizer:ze(this.activityRegularizer),embeddingsConstraint:Nn(this.embeddingsConstraint),maskZero:this.maskZero,inputLength:this.inputLength},e=super.getConfig();return Object.assign(t,e),t}}u0.className="Embedding",kt(u0);class Ei extends Te{constructor(t){super(t||{});this.supportsMasking=!0}mergeFunction(t){throw new Zt}computeElementwiseOpOutputShape(t,e){if(t==null||e==null)return null;if(t.length<e.length)return this.computeElementwiseOpOutputShape(e,t);if(e.length===0)return t;let r=t.slice(0,t.length-e.length);for(let s=0;s<e.length;++s){let u=t[t.length-e.length+s],l=e[s];if(u==null||l==null||u<0||l<0)r.push(null);else if(u===1)r.push(l);else if(l===1)r.push(u);else{if(u!==l)throw new Q("Operands could not be broadcast together with shapes "+JSON.stringify(t)+" "+JSON.stringify(e));r.push(u)}}return r}build(t){if(Array.isArray(t)&&!Array.isArray(t[0])&&(t=[Be(t)]),t=t,t.length<2)throw new Q(`A merge layer should be called on an Array of at least 2 inputs. Got ${t.length} input(s).`);let e=[];for(let u of t)u!=null&&u[0]!==null&&e.push(u[0]);if(e=ma(e),e.length>1)throw new Q(`Can not merge tensors with different batch sizes. Got tensors with shapes: ${JSON.stringify(t)}.`);let r=t[0]==null?null:t[0].slice(1);for(let u=1;u<t.length;++u){let l=t[u]==null?null:t[u].slice(1);r=this.computeElementwiseOpOutputShape(r,l)}let s=t.map(u=>u.length);t.indexOf(null)===-1&&ma(s).length===1?this.reshapeRequired=!1:this.reshapeRequired=!0}call(t,e){return ot(()=>{if(t=t,this.reshapeRequired){let r=[],s=t.map(u=>u.rank);if(s.indexOf(null)===-1){let u=va(s);for(let l of t){let h=l.rank;for(let p=0;p<u-h;++p)l=Gh(l,1);r.push(l)}return this.mergeFunction(r)}else{let u=!1;for(let p of t){let m=p.rank;if(m==null){let y=p.shape,b=y[0],x=y.slice(1).concat([b]),S=p.reshape([b].concat(ga(y.slice(1))));S=re(S,[1,0]),S=S.reshape(x),r.push(S),u=!0}else if(m>1){let y=xs(1,m).concat([0]);r.push(re(p,y)),u=!0}else r.push(p)}let l=this.mergeFunction(r),h=l.rank;if(u){if(h==null){let p=l.shape,m=p.length,y=p[m-1],b=[y].concat(p.slice(0,p.length-1));l=re(l.reshape([-1,y]),[1,0]).reshape(b)}else if(h>1){let p=[h-1].concat(xs(0,h-1));l=re(l,p)}}return l}}else return this.mergeFunction(t)})}computeOutputShape(t){t=t;let e;t[0]==null?e=null:e=t[0].slice(1);for(let s=1;s<t.length;++s){let u=t[s]==null?null:t[s].slice(1);e=this.computeElementwiseOpOutputShape(e,u)}let r=[];for(let s of t)s!=null&&s[0]!==null&&r.push(s[0]);return r=ma(r),r.length===1?e=r.concat(e):e=[null].concat(e),e}computeMask(t,e){return ot(()=>{if(e==null)return null;if(!Array.isArray(e))throw new Q("`mask` should be an Array");if(!Array.isArray(t))throw new Q("`inputs` should be an Array");if(e.length!==t.length)throw new Q(`The Array 'inputs' and 'mask' are expected to have the same length, but have different lengths (${t.length} vs ${e.length})`);if(e.every(s=>s==null))return null;e=e.map(s=>s==null?s:pr(s,0));let r=e[0];for(let s=1;s<e.length-1;++s)r=es(r,e[s]);return r})}}class ef extends Ei{constructor(t){super(t)}mergeFunction(t){return ot(()=>{let e=t[0].clone();for(let r=1;r<t.length;++r)e=Nt(e,t[r]);return e})}}ef.className="Add",kt(ef);function aft(n){if(Array.isArray(n)){let t=new ef({});return t.apply(n)}else return new ef(n)}class nf extends Ei{constructor(t){super(t)}mergeFunction(t){return ot(()=>{let e=t[0].clone();for(let r=1;r<t.length;++r)e=st(e,t[r]);return e})}}nf.className="Multiply",kt(nf);function ift(n){if(Array.isArray(n)){let t=new nf({});return t.apply(n)}else return new nf(n)}class rf extends Ei{constructor(t){super(t)}mergeFunction(t){return ot(()=>{let e=t[0].clone();for(let r=1;r<t.length;++r)e=Nt(e,t[r]);return st(1/t.length,e)})}}rf.className="Average",kt(rf);function uft(n){if(Array.isArray(n)){let t=new rf({});return t.apply(n)}else return new rf(n)}class sf extends Ei{constructor(t){super(t)}mergeFunction(t){return ot(()=>{let e=t[0];for(let r=1;r<t.length;++r)e=ts(e,t[r]);return e})}}sf.className="Maximum",kt(sf);function cft(n){if(Array.isArray(n)){let t=new sf({});return t.apply(n)}else return new sf(n)}class of extends Ei{constructor(t){super(t)}mergeFunction(t){return ot(()=>{let e=t[0];for(let r=1;r<t.length;++r)e=mi(e,t[r]);return e})}}of.className="Minimum",kt(of);function lft(n){if(Array.isArray(n)){let t=new of({});return t.apply(n)}else return new of(n)}class af extends Ei{constructor(t){super(t);this.DEFAULT_AXIS=-1,t==null&&(t={}),this.axis=t.axis==null?this.DEFAULT_AXIS:t.axis,this.supportsMasking=!0,this.reshapeRequired=!1}build(t){if(!(Array.isArray(t)&&Array.isArray(t[0]))||t.length===1)throw new Q("A `Concatenate` layer should be called on a list of at least 2 inputs");t=t;let e=!0;for(let s of t)if(s!=null){e=!1;break}if(e)return;let r=[];for(let s=0;s<t.length;++s){let u=t[s].slice();u.splice(this.axis,1);let l=!1;for(let h of r)if(K(h,u)){l=!0;break}l||r.push(u)}if(r.length>1)throw new Q("A `Concatenate` layer requires inputs with matching shapes except for the concat axis. Got input shapes: "+JSON.stringify(t))}mergeFunction(t){return ot(()=>uw(t,this.axis))}computeOutputShape(t){if(!(Array.isArray(t)&&Array.isArray(t[0])))throw new Q("A `Concatenate` layer should be called on a list of inputs.");let e=t,r=e[0].slice(),s=this.axis<0?r.length+this.axis:this.axis;for(let u of e.slice(1)){if(r[s]==null||u[s]==null){r[s]=null;break}r[s]+=u[s]}return r}computeMask(t,e){if(e==null)return null;if(!Array.isArray(e))throw new Q("`mask` should be an array for Concatenate");if(!Array.isArray(t))throw new Q("`inputs` should be an array for Concatenate");if(e.length!==t.length)throw new Q(`Mismatch in the length of mask (${e.length}) and the legnth of inputs (${t.length})`);return ot(()=>{let r=!0;if(e.forEach(l=>{if(l!=null){r=!1;return}}),r)return null;let s=[];for(let l=0;l<t.length;++l)e[l]==null?s.push(Xn(t[l]).asType("bool")):e[l].rank<t[l].rank?s.push(pr(e[l],-1)):s.push(e[l]);let u=sn(s,this.axis);return cd(u,-1,!1)})}getConfig(){let t={axis:this.axis},e=super.getConfig();return Object.assign(t,e),t}}af.className="Concatenate",kt(af);function hft(n){if(Array.isArray(n)){let t=new af({});return t.apply(n)}else return new af(n)}function uf(n,t){for(;n<0;)n+=t;return n}function sG(n,t,e){if(n.shape.length>3||t.shape.length>3)throw new Zt("batchDot is not implemented for tensors of 4D or higher rank yet");if(k(n.shape.length>=2,()=>`batchDot requires the rank of x to be >= 2, but got ${n.shape.length}`),k(n.shape.length>=2,()=>`batchDot requires the rank of y to be >= 2, but got ${t.shape.length}`),typeof e=="number"&&(e=[e,e]),n.dtype==="complex64"||t.dtype==="complex64")throw new Zt("batchDot is not implemented for complex64-type Tensors yet.");let r=n.shape.length,s=t.shape.length;e==null&&(e=[r-1,s-2]);let u=e;return ot(()=>{let l;if(r>s){l=r-s;let p=[];for(let m=0;m<l;++m)p.push(1);t=t.reshape(t.shape.concat(p))}else if(s>r){l=s-r;let p=[];for(let m=0;m<l;++m)p.push(1);n=n.reshape(n.shape.concat(p))}else l=0;let h;if(n.shape.length===2&&t.shape.length===2)u[0]===u[1]?h=n.mul(t).sum(u[0]):h=n.transpose([1,0]).mul(t).sum(u[1]);else{let p=u[0]!==n.shape.length-1,m=u[1]===t.shape.length-1;h=n.matMul(t,p,m)}if(l>0){let p;r>s?p=r+s-3:p=r-1;let m=[];for(let y=p;y<p+l;++y)m.push(y);h=h.squeeze(m)}return h.shape.length===1&&(h=h.expandDims(1)),h})}class c0 extends Ei{constructor(t){super(t);this.axes=t.axes,this.normalize=t.normalize==null?!1:t.normalize,this.supportsMasking=!0,this.reshapeRequired=!1}build(t){k(Array.isArray(t)&&t.length===2&&Array.isArray(t[0])&&Array.isArray(t[1]),()=>"A `Dot` layer should be called on a list of exactly 2 inputs.");let e=t[0],r=t[1];if(e.length>3||r.length>3)throw new Zt("Dot layer does not support tensors of 4D or higher rank yet.");let s=this.interpretAxes(e,r);if(e[s[0]]!==r[s[1]])throw new Q(`Dimension incompatibility: ${e[s[0]]} !== ${r[s[1]]}`)}mergeFunction(t){if(t.length!==2)throw new Q(`A \`Dot\` layer must be called on exactly 2 inputs, but received ${t.length} input(s).`);let e=t[0],r=t[1],s;return Array.isArray(this.axes)?s=this.axes.map((u,l)=>uf(u,t[l].shape.length)):s=[uf(this.axes,e.shape.length),uf(this.axes,r.shape.length)],this.normalize&&(e=hm(e,s[0]),r=hm(r,s[1])),sG(e,r,s)}interpretAxes(t,e){let r;return Array.isArray(this.axes)?r=this.axes:r=[uf(this.axes,t.length),uf(this.axes,e.length)],r}computeOutputShape(t){k(Array.isArray(t)&&t.length===2&&Array.isArray(t[0])&&Array.isArray(t[1]),()=>"A `Dot` layer should be called on a list of exactly 2 inputs.");let e=t[0].slice(),r=t[1].slice();if(e.length>3||r.length>3)throw new Zt("Dot layer does not support tensors of 4D or higher rank yet.");let s=this.interpretAxes(e,r);e.splice(s[0],1),r.splice(s[1],1),r.splice(0,1);let u=e.concat(r);return u.length===1&&u.push(1),u}computeMask(t,e){return null}getConfig(){let t={axes:this.axes,normalize:this.normalize},e=super.getConfig();return Object.assign(t,e),t}}c0.className="Dot",kt(c0);class l0 extends Te{constructor(t){super(t);this.supportsMasking=!0,this.stddev=t.stddev}computeOutputShape(t){return t}getConfig(){let t=super.getConfig(),e={stddev:this.stddev};return Object.assign(e,t),e}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t),s=()=>Zd(r.shape,0,this.stddev).add(r),u=qh(s,()=>r,e.training||!1);return u})}}l0.className="GaussianNoise",kt(l0);class h0 extends Te{constructor(t){super(t);this.supportsMasking=!0,this.rate=t.rate}computeOutputShape(t){return t}getConfig(){let t=super.getConfig(),e={rate:this.rate};return Object.assign(e,t),e}call(t,e){return ot(()=>{this.invokeCallHook(t,e);let r=le(t);if(this.rate>0&&this.rate<1){let s=()=>{let u=Math.sqrt(this.rate/(1-this.rate));return r.mul(Zd(r.shape,1,u))};return qh(s,()=>r,e.training||!1)}return r})}}h0.className="GaussianDropout",kt(h0);class f0 extends Te{constructor(t){super(t);this.supportsMasking=!0,this.rate=t.rate,this.noiseShape=t.noiseShape}_getNoiseShape(t){return this.noiseShape||le(t).shape}computeOutputShape(t){return t}getConfig(){let t=super.getConfig(),e={rate:this.rate};return Object.assign(e,t),e}call(t,e){return ot(()=>{if(this.rate<1&&this.rate>0){let r=this._getNoiseShape(t),s=()=>{let u=le(t),l=1.6732632423543772,h=1.0507009873554805,p=-l*h,m=xo(yi(r),this.rate);m=Uh(m,"float32");let y=((1-this.rate)*(1+this.rate*p**2))**-.5,b=-y*p*this.rate,x=u.mul(m).add(m.add(-1).mul(p));return x.mul(y).add(b)};return qh(s,()=>le(t),e.training||!1)}return t})}}f0.className="AlphaDropout",kt(f0);function cf(n,t,e,r,s,u=.001){let l;if(n.rank===2)l=zS(n,t,e,r,s,u);else if(n.rank===3)l=WS(n,t,e,r,s,u);else if(n.rank===4)l=VS(n,t,e,r,s,u);else throw new Zt(`batchNormalization is not implemented for array of rank ${n.rank} yet`);return l}function oG(n,t,e,r,s=.001){return ot(()=>{let u=Cd(n,r),l=u.mean,h=u.variance,p=cf(n,l,h,e,t,s);return[p,l,h]})}function aG(n,t,e,r,s=.001){return ot(()=>{let u=Cd(n,r),l=u.mean,h=u.variance,p=[];for(let C of xs(0,n.rank))r.indexOf(C)!==-1?p.push(1):p.push(n.shape[C]);let m=l.reshape(p),y=h.reshape(p),b=t==null?null:t.reshape(p),x=e==null?null:e.reshape(p),S=cf(n,m,y,x,b,s);return[S,l,h]})}function iG(n,t,e,r,s=.001){return K(r.slice().sort(),xs(0,n.rank-1))?oG(n,t,e,r,s):aG(n,t,e,r,s)}class p0 extends Te{constructor(t){t==null&&(t={}),super(t),this.supportsMasking=!0,this.axis=t.axis==null?-1:t.axis,this.momentum=t.momentum==null?.99:t.momentum,this.epsilon=t.epsilon==null?.001:t.epsilon,this.center=t.center==null?!0:t.center,this.scale=t.scale==null?!0:t.scale,this.betaInitializer=Xe(t.betaInitializer||"zeros"),this.gammaInitializer=Xe(t.gammaInitializer||"ones"),this.movingMeanInitializer=Xe(t.movingMeanInitializer||"zeros"),this.movingVarianceInitializer=Xe(t.movingVarianceInitializer||"ones"),this.betaConstraint=In(t.betaConstraint),this.gammaConstraint=In(t.gammaConstraint),this.betaRegularizer=Ye(t.betaRegularizer),this.gammaRegularizer=Ye(t.gammaRegularizer)}build(t){t=Be(t);let e=this.axis>=0?this.axis:this.axis+t.length,r=t[e];if(r==null)throw new Q(`Axis ${e} of input tensor should have a defined dimension but the layer received an input with shape ${JSON.stringify(t)}.`);this.inputSpec=[new Fn({ndim:t.length,axes:{[e]:r}})];let s=[r];this.scale&&(this.gamma=this.addWeight("gamma",s,null,this.gammaInitializer,this.gammaRegularizer,!0,this.gammaConstraint)),this.center&&(this.beta=this.addWeight("beta",s,null,this.betaInitializer,this.betaRegularizer,!0,this.betaConstraint)),this.movingMean=this.addWeight("moving_mean",s,null,this.movingMeanInitializer,null,!1),this.movingVariance=this.addWeight("moving_variance",s,null,this.movingVarianceInitializer,null,!1),this.built=!0}call(t,e){return ot(()=>{let r=e.training==null?!1:e.training,s=le(t),u=s.shape,l=u.length,h=xs(0,l),p=this.axis>=0?this.axis:this.axis+l;h.splice(p,1);let m=Ti(1,l);m[p]=u[p];let y=h.slice();y.sort();let b=!K(y,xs(0,l).slice(0,l-1)),x=()=>{if(b){let A=this.movingMean.read().reshape(m),L=this.movingVariance.read().reshape(m),_=this.center?this.beta.read().reshape(m):null,B=this.scale?this.gamma.read().reshape(m):null;return cf(s,A,L,_,B,this.epsilon)}else return cf(s,this.movingMean.read(),this.movingVariance.read(),this.beta==null?null:this.beta.read(),this.gamma==null?null:this.gamma.read(),this.epsilon)};if(!r)return x();let[S,C,I]=iG(s,this.gamma.read(),this.beta.read(),h,this.epsilon),D=(A,L,_)=>{ot(()=>{let B=1-_,V=A.read(),q=V.sub(L).mul(B);A.write(V.sub(q))})},R=()=>{D(this.movingMean,C,this.momentum),D(this.movingVariance,I,this.momentum)};return R(),S})}getConfig(){let t={axis:this.axis,momentum:this.momentum,epsilon:this.epsilon,center:this.center,scale:this.scale,betaInitializer:cn(this.betaInitializer),gammaInitializer:cn(this.gammaInitializer),movingMeanInitializer:cn(this.movingMeanInitializer),movingVarianceInitializer:cn(this.movingVarianceInitializer),betaRegularizer:ze(this.betaRegularizer),gammaRegularizer:ze(this.gammaRegularizer),betaConstraint:Nn(this.betaConstraint),gammaConstraint:Nn(this.gammaConstraint)},e=super.getConfig();return Object.assign(t,e),t}}p0.className="BatchNormalization",kt(p0);class d0 extends Te{constructor(t){if(t==null&&(t={}),super(t),this.axis=t.axis==null?-1:t.axis,typeof this.axis=="number"){if(!Number.isInteger(this.axis))throw new Error(`Expected axis to be an integer, but received ${this.axis}`)}else if(Array.isArray(this.axis)){for(let e of this.axis)if(!Number.isInteger(e))throw new Error(`Expected axis to be an array of integers, but received ${JSON.stringify(this.axis)}`)}else throw new Error(`Expected axis to be an integer or an array of integers, but received ${JSON.stringify(this.axis)}`);this.epsilon=t.epsilon==null?.001:t.epsilon,this.center=t.center==null?!0:t.center,this.scale=t.scale==null?!0:t.scale,this.betaInitializer=Xe(t.betaInitializer||"zeros"),this.gammaInitializer=Xe(t.gammaInitializer||"ones"),this.betaRegularizer=Ye(t.betaRegularizer),this.gammaRegularizer=Ye(t.gammaRegularizer),this.supportsMasking=!0}build(t){t=Be(t);let e=t.length;typeof this.axis=="number"&&(this.axis=[this.axis]);for(let u=0;u<this.axis.length;++u)this.axis[u]<0&&(this.axis[u]+=e);for(let u of this.axis)if(u<0||u>=e)throw new Error(`Invalid axis: ${u}`);if(this.axis.length!==ma(this.axis).length)throw new Error(`Found duplicate axes in: ${this.axis}`);let r=this.axis.map(u=>t[u]),s=!0;this.scale?this.gamma=this.addWeight("gamma",r,"float32",this.gammaInitializer,this.gammaRegularizer,s):this.gamma=null,this.center?this.beta=this.addWeight("beta",r,"float32",this.betaInitializer,this.betaRegularizer,s):this.beta=null,this.built=!0}call(t,e){let r=le(t),s=r.shape,u=s.length;return ot(()=>{let l=!0,{mean:h,variance:p}=Cd(r,this.axis,l),m=Ti(1,u);for(let I of this.axis)m[I]=s[I];let y=I=>I!=null&&I.shape.length!==u&&this.axis!==[u-1]?I.reshape(m):I,b=y(this.gamma.read()),x=y(this.beta.read()),S=[],C=[];for(let I=0;I<u;++I)this.axis.indexOf(I)!==-1?(S.push(s[I]),C.push(1)):(S.push(1),C.push(s[I]));return h=h.tile(S),p=p.tile(S),b=b.tile(C),x=x.tile(C),cf(r,h,p,x,b,this.epsilon)})}getConfig(){let t={axis:this.axis,epsilon:this.epsilon,center:this.center,scale:this.scale,betaInitializer:cn(this.betaInitializer),gammaInitializer:cn(this.gammaInitializer),betaRegularizer:ze(this.betaRegularizer),gammaRegularizer:ze(this.gammaRegularizer)},e=super.getConfig();return Object.assign(t,e),t}}d0.className="LayerNormalization",kt(d0);function fft(n,t){return ot(()=>{if(n.rank!==3)throw new Q(`temporalPadding expects input tensor to be 3-D, but received a ${n.rank}-D tensor.`);if(t==null&&(t=[1,1]),t.length!==2)throw new Q(`temporalPadding expects input padding pattern to be a length-2 array, but received a length-${t.length} array.`);let e=[[0,0],t,[0,0]];return Xs(n,e)})}function uG(n,t,e){return ot(()=>{if(n.rank!==4)throw new Q(`temporalPadding expects input tensor to be 4-D, but received a ${n.rank}-D tensor.`);if(t==null&&(t=[[1,1],[1,1]]),t.length!==2||t[0].length!==2||t[1].length!==2)throw new Q("spatial2dPadding expects `padding` to be an Array of two Arrays, each of which is an Array of two integers.");if(e==null&&(e=ws()),e!=="channelsLast"&&e!=="channelsFirst")throw new Q(`Unknown data format: ${e}. Supported data formats are 'channelsLast' and 'channelsFirst.`);let r;return e==="channelsFirst"?r=[[0,0],[0,0],t[0],t[1]]:r=[[0,0],t[0],t[1],[0,0]],Xs(n,r)})}class m0 extends Te{constructor(t){if(t==null&&(t={}),super(t),this.dataFormat=t.dataFormat==null?ws():t.dataFormat,t.padding==null)this.padding=[[1,1],[1,1]];else if(typeof t.padding=="number")this.padding=[[t.padding,t.padding],[t.padding,t.padding]];else{if(t.padding=t.padding,t.padding.length!==2)throw new Q(`ZeroPadding2D expects padding to be a length-2 array, but received a length-${t.padding.length} array.`);let e,r;if(typeof t.padding[0]=="number")e=[t.padding[0],t.padding[0]],r=[t.padding[1],t.padding[1]];else{if(t.padding=t.padding,t.padding[0].length!==2)throw new Q(`ZeroPadding2D expects height padding to be a length-2 array, but received a length-${t.padding[0].length} array.`);if(e=t.padding[0],t.padding[1].length!==2)throw new Q(`ZeroPadding2D expects width padding to be a length-2 array, but received a length-${t.padding[1].length} array.`);r=t.padding[1]}this.padding=[e,r]}this.inputSpec=[new Fn({ndim:4})]}computeOutputShape(t){t=Be(t);let e,r;return this.dataFormat==="channelsFirst"?(t[2]!=null&&t[2]>=0?e=t[2]+this.padding[0][0]+this.padding[0][1]:e=null,t[3]!=null&&t[3]>=0?r=t[3]+this.padding[1][0]+this.padding[1][1]:r=null,[t[0],t[1],e,r]):(t[1]!=null&&t[1]>=0?e=t[1]+this.padding[0][0]+this.padding[0][1]:e=null,t[2]!=null&&t[2]>=0?r=t[2]+this.padding[1][0]+this.padding[1][1]:r=null,[t[0],e,r,t[3]])}call(t,e){return ot(()=>uG(le(t),this.padding,this.dataFormat))}getConfig(){let t={padding:this.padding,dataFormat:this.dataFormat},e=super.getConfig();return Object.assign(t,e),t}}m0.className="ZeroPadding2D",kt(m0);function Im(n,t,e,r,s,u){return ot(()=>{un(s),sN(u),Ur(r),e==null&&(e=[1,1]),r==null&&(r="valid"),s==null&&(s=ws()),u==null&&(u="max"),n=Uw(n,s);let l,h=r==="same"?"same":"valid";return u==="max"?l=Th(n,t,e,h):l=dh(n,t,e,h),s==="channelsFirst"&&(l=re(l,[0,3,1,2])),l})}function gI(n,t,e,r,s,u){return ot(()=>{un(s),sN(u),Ur(r),e==null&&(e=[1,1,1]),r==null&&(r="valid"),s==null&&(s=ws()),u==null&&(u="max"),n=cI(n,s);let l,h=r==="same"?"same":"valid";return u==="max"?l=gb(n,t,e,h):l=rb(n,t,e,h),s==="channelsFirst"&&(l=re(l,[0,4,1,2,3])),l})}class vI extends Te{constructor(t){if(t.poolSize==null&&(t.poolSize=2),super(t),typeof t.poolSize=="number")this.poolSize=[t.poolSize];else if(Array.isArray(t.poolSize)&&t.poolSize.length===1&&typeof t.poolSize[0]=="number")this.poolSize=t.poolSize;else throw new Q(`poolSize for 1D convolutional layer must be a number or an Array of a single number, but received ${JSON.stringify(t.poolSize)}`);if(_n(this.poolSize,"poolSize"),t.strides==null)this.strides=this.poolSize;else if(typeof t.strides=="number")this.strides=[t.strides];else if(Array.isArray(t.strides)&&t.strides.length===1&&typeof t.strides[0]=="number")this.strides=t.strides;else throw new Q(`strides for 1D convolutional layer must be a number or an Array of a single number, but received ${JSON.stringify(t.strides)}`);_n(this.strides,"strides"),this.padding=t.padding==null?"valid":t.padding,Ur(this.padding),this.inputSpec=[new Fn({ndim:3})]}computeOutputShape(t){t=Be(t);let e=Ns(t[1],this.poolSize[0],this.padding,this.strides[0]);return[t[0],e,t[2]]}call(t,e){return ot(()=>{this.invokeCallHook(t,e),t=Gh(le(t),2);let r=this.poolingFunction(le(t),[this.poolSize[0],1],[this.strides[0],1],this.padding,"channelsLast");return fa(r,[2])})}getConfig(){let t={poolSize:this.poolSize,padding:this.padding,strides:this.strides},e=super.getConfig();return Object.assign(t,e),t}}class g0 extends vI{constructor(t){super(t)}poolingFunction(t,e,r,s,u){return un(u),Ur(s),Im(t,e,r,s,u,"max")}}g0.className="MaxPooling1D",kt(g0);class v0 extends vI{constructor(t){super(t)}poolingFunction(t,e,r,s,u){return un(u),Ur(s),Im(t,e,r,s,u,"avg")}}v0.className="AveragePooling1D",kt(v0);class yI extends Te{constructor(t){if(t.poolSize==null&&(t.poolSize=[2,2]),super(t),this.poolSize=Array.isArray(t.poolSize)?t.poolSize:[t.poolSize,t.poolSize],t.strides==null)this.strides=this.poolSize;else if(Array.isArray(t.strides)){if(t.strides.length!==2)throw new Q(`If the strides property of a 2D pooling layer is an Array, it is expected to have a length of 2, but received length ${t.strides.length}.`);this.strides=t.strides}else this.strides=[t.strides,t.strides];_n(this.poolSize,"poolSize"),_n(this.strides,"strides"),this.padding=t.padding==null?"valid":t.padding,this.dataFormat=t.dataFormat==null?"channelsLast":t.dataFormat,un(this.dataFormat),Ur(this.padding),this.inputSpec=[new Fn({ndim:4})]}computeOutputShape(t){t=Be(t);let e=this.dataFormat==="channelsFirst"?t[2]:t[1],r=this.dataFormat==="channelsFirst"?t[3]:t[2];return e=Ns(e,this.poolSize[0],this.padding,this.strides[0]),r=Ns(r,this.poolSize[1],this.padding,this.strides[1]),this.dataFormat==="channelsFirst"?[t[0],t[1],e,r]:[t[0],e,r,t[3]]}call(t,e){return ot(()=>(this.invokeCallHook(t,e),this.poolingFunction(le(t),this.poolSize,this.strides,this.padding,this.dataFormat)))}getConfig(){let t={poolSize:this.poolSize,padding:this.padding,strides:this.strides,dataFormat:this.dataFormat},e=super.getConfig();return Object.assign(t,e),t}}class y0 extends yI{constructor(t){super(t)}poolingFunction(t,e,r,s,u){return un(u),Ur(s),Im(t,e,r,s,u,"max")}}y0.className="MaxPooling2D",kt(y0);class b0 extends yI{constructor(t){super(t)}poolingFunction(t,e,r,s,u){return un(u),Ur(s),Im(t,e,r,s,u,"avg")}}b0.className="AveragePooling2D",kt(b0);class bI extends Te{constructor(t){if(t.poolSize==null&&(t.poolSize=[2,2,2]),super(t),this.poolSize=Array.isArray(t.poolSize)?t.poolSize:[t.poolSize,t.poolSize,t.poolSize],t.strides==null)this.strides=this.poolSize;else if(Array.isArray(t.strides)){if(t.strides.length!==3)throw new Q(`If the strides property of a 3D pooling layer is an Array, it is expected to have a length of 3, but received length ${t.strides.length}.`);this.strides=t.strides}else this.strides=[t.strides,t.strides,t.strides];_n(this.poolSize,"poolSize"),_n(this.strides,"strides"),this.padding=t.padding==null?"valid":t.padding,this.dataFormat=t.dataFormat==null?"channelsLast":t.dataFormat,un(this.dataFormat),Ur(this.padding),this.inputSpec=[new Fn({ndim:5})]}computeOutputShape(t){t=Be(t);let e=this.dataFormat==="channelsFirst"?t[2]:t[1],r=this.dataFormat==="channelsFirst"?t[3]:t[2],s=this.dataFormat==="channelsFirst"?t[4]:t[3];return e=Ns(e,this.poolSize[0],this.padding,this.strides[0]),r=Ns(r,this.poolSize[1],this.padding,this.strides[1]),s=Ns(s,this.poolSize[2],this.padding,this.strides[2]),this.dataFormat==="channelsFirst"?[t[0],t[1],e,r,s]:[t[0],e,r,s,t[4]]}call(t,e){return ot(()=>(this.invokeCallHook(t,e),this.poolingFunction(le(t),this.poolSize,this.strides,this.padding,this.dataFormat)))}getConfig(){let t={poolSize:this.poolSize,padding:this.padding,strides:this.strides,dataFormat:this.dataFormat},e=super.getConfig();return Object.assign(t,e),t}}class w0 extends bI{constructor(t){super(t)}poolingFunction(t,e,r,s,u){return un(u),Ur(s),gI(t,e,r,s,u,"max")}}w0.className="MaxPooling3D",kt(w0);class x0 extends bI{constructor(t){super(t)}poolingFunction(t,e,r,s,u){return un(u),Ur(s),gI(t,e,r,s,u,"avg")}}x0.className="AveragePooling3D",kt(x0);class wI extends Te{constructor(t){super(t);this.inputSpec=[new Fn({ndim:3})]}computeOutputShape(t){return[t[0],t[2]]}call(t,e){throw new Zt}}class T0 extends wI{constructor(t){super(t||{})}call(t,e){return ot(()=>{let r=le(t);return an(r,1)})}}T0.className="GlobalAveragePooling1D",kt(T0);class k0 extends wI{constructor(t){super(t||{})}call(t,e){return ot(()=>{let r=le(t);return dr(r,1)})}}k0.className="GlobalMaxPooling1D",kt(k0);class xI extends Te{constructor(t){super(t);this.dataFormat=t.dataFormat==null?"channelsLast":t.dataFormat,un(this.dataFormat),this.inputSpec=[new Fn({ndim:4})]}computeOutputShape(t){return t=t,this.dataFormat==="channelsLast"?[t[0],t[3]]:[t[0],t[1]]}call(t,e){throw new Zt}getConfig(){let t={dataFormat:this.dataFormat},e=super.getConfig();return Object.assign(t,e),t}}class S0 extends xI{call(t,e){return ot(()=>{let r=le(t);return this.dataFormat==="channelsLast"?an(r,[1,2]):an(r,[2,3])})}}S0.className="GlobalAveragePooling2D",kt(S0);class C0 extends xI{call(t,e){return ot(()=>{let r=le(t);return this.dataFormat==="channelsLast"?dr(r,[1,2]):dr(r,[2,3])})}}C0.className="GlobalMaxPooling2D",kt(C0);class TI extends Te{constructor(t){super(t);this.layer=t.layer}build(t){this.built=!0}get trainable(){return this.layer!=null?this.layer.trainable:!1}set trainable(t){this.layer!=null&&(this.layer.trainable=t)}get trainableWeights(){return this.layer.trainableWeights}get nonTrainableWeights(){return this.layer.nonTrainableWeights}get updates(){return this.layer._updates}get losses(){return this.layer.losses}getWeights(){return this.layer.getWeights()}setWeights(t){this.layer.setWeights(t)}getConfig(){let t={layer:{className:this.layer.getClassName(),config:this.layer.getConfig()}},e=super.getConfig();return Object.assign(t,e),t}setFastWeightInitDuringBuild(t){super.setFastWeightInitDuringBuild(t),this.layer!=null&&this.layer.setFastWeightInitDuringBuild(t)}static fromConfig(t,e,r={}){let s=e.layer,u=Ss(s,r);delete e.layer;let l={layer:u};return Object.assign(l,e),new t(l)}}class N0 extends TI{constructor(t){super(t);this.supportsMasking=!0}build(t){if(t=Be(t),t.length<3)throw new Q(`TimeDistributed layer expects an input shape >= 3D, but received input shape ${JSON.stringify(t)}`);this.inputSpec=[{shape:t}];let e=[t[0]].concat(t.slice(2));this.layer.built||(this.layer.build(e),this.layer.built=!0),super.build(t)}computeOutputShape(t){t=Be(t);let e=[t[0]].concat(t.slice(2)),r=this.layer.computeOutputShape(e),s=t[1];return[r[0],s].concat(r.slice(1))}call(t,e){return ot(()=>{t=le(t);let r=(l,h)=>{let p=le(this.layer.call(l,e));return[p,[]]},s=dI(r,t,[],!1,null,null,!1,!0),u=s[1];return u})}}N0.className="TimeDistributed",kt(N0);function cG(n){Hu(yV,"BidirectionalMergeMode",n)}let lG="concat";class I0 extends TI{constructor(t){super(t);let e=t.layer.getConfig(),r={};r.className=t.layer.getClassName(),r.config=e,this.forwardLayer=Ss(r),e.goBackwards=!(e.goBackwards===!0);let s={};if(s.className=t.layer.getClassName(),s.config=e,this.backwardLayer=Ss(s),this.forwardLayer.name="forward_"+this.forwardLayer.name,this.backwardLayer.name="backward_"+this.backwardLayer.name,this.mergeMode=t.mergeMode===void 0?lG:t.mergeMode,cG(this.mergeMode),t.weights)throw new Zt("weights support is not implemented for Bidirectional layer yet.");this._stateful=t.layer.stateful,this.returnSequences=t.layer.returnSequences,this.returnState=t.layer.returnState,this.supportsMasking=!0,this._trainable=!0,this.inputSpec=t.layer.inputSpec,this.numConstants=null}get trainable(){return this._trainable}set trainable(t){this._trainable=t,this.forwardLayer!=null&&(this.forwardLayer.trainable=t),this.backwardLayer!=null&&(this.backwardLayer.trainable=t)}getWeights(){return this.forwardLayer.getWeights().concat(this.backwardLayer.getWeights())}setWeights(t){let e=t.length,r=Math.floor(e/2);this.forwardLayer.setWeights(t.slice(0,r)),this.backwardLayer.setWeights(t.slice(r))}computeOutputShape(t){let e=this.forwardLayer.computeOutputShape(t);Array.isArray(e)&&Array.isArray(e[0])||(e=[e]),e=e;let r,s,u;return this.returnState&&(u=e.slice(1)),r=e[0],r=r,this.mergeMode==="concat"?(r[r.length-1]*=2,s=[r]):this.mergeMode==null?s=[r,r.slice()]:s=[r],this.returnState?this.mergeMode==null?s.concat(u).concat(u.slice()):[r].concat(u).concat(u.slice()):gr(s)}apply(t,e){let r=e==null?null:e.initialState,s=e==null?null:e.constants;e==null&&(e={});let u=pI(t,r,s,this.numConstants);if(t=u.inputs,r=u.initialState,s=u.constants,Array.isArray(t)&&(r=t.slice(1),t=t[0]),(r==null||r.length===0)&&s==null)return super.apply(t,e);let l=[],h=[];if(r!=null){let m=r.length;if(m%2>0)throw new Q("When passing `initialState` to a Bidrectional RNN, the state should be an Array containing the states of the underlying RNNs.");e.initialState=r,l.push(...r);let y=r.map(b=>new Fn({shape:b.shape}));this.forwardLayer.stateSpec=y.slice(0,m/2),this.backwardLayer.stateSpec=y.slice(m/2),h.push(...y)}if(s!=null)throw new Zt("Support for constants in Bidirectional layers is not implemented yet.");let p=l[0]instanceof ks;for(let m of l)if(m instanceof ks!==p)throw new Q("The initial state of a Bidirectional layer cannot be specified as a mix of symbolic and non-symbolic tensors");if(p){let m=[t].concat(l),y=this.inputSpec.concat(h),b=this.inputSpec;this.inputSpec=y;let x=super.apply(m,e);return this.inputSpec=b,x}else return super.apply(t,e)}call(t,e){return ot(()=>{let r=e.initialState,s,u;if(r==null)s=this.forwardLayer.call(t,e),u=this.backwardLayer.call(t,e);else{let p=r.slice(0,r.length/2),m=r.slice(r.length/2);s=this.forwardLayer.call(t,Object.assign(e,{initialState:p})),u=this.backwardLayer.call(t,Object.assign(e,{initialState:m}))}let l;this.returnState&&(Array.isArray(s)&&(l=s.slice(1).concat(u.slice(1))),s=s[0],u=u[0]),this.returnSequences&&(u=Wr(u,1));let h;return this.mergeMode==="concat"?h=uw([s,u]):this.mergeMode==="sum"?h=Nt(s,u):this.mergeMode==="ave"?h=st(.5,Nt(s,u)):this.mergeMode==="mul"?h=st(s,u):this.mergeMode==null&&(h=[s,u]),this.returnState?this.mergeMode==null?h.concat(l):[h].concat(l):h})}resetStates(t){this.forwardLayer.resetStates(),this.backwardLayer.resetStates()}build(t){Si(this.forwardLayer.name,()=>{this.forwardLayer.build(t)}),Si(this.backwardLayer.name,()=>{this.backwardLayer.build(t)}),this.built=!0}computeMask(t,e){Array.isArray(e)&&(e=e[0]);let r;if(this.returnSequences?this.mergeMode==null?r=[e,e]:r=e:this.mergeMode==null?r=[null,null]:r=null,this.returnState){let s=this.forwardLayer.states,u=s.map(l=>null);return Array.isArray(r)?r.concat(u).concat(u):[r].concat(u).concat(u)}else return r}get trainableWeights(){return this.forwardLayer.trainableWeights.concat(this.backwardLayer.trainableWeights)}get nonTrainableWeights(){return this.forwardLayer.nonTrainableWeights.concat(this.backwardLayer.nonTrainableWeights)}setFastWeightInitDuringBuild(t){super.setFastWeightInitDuringBuild(t),this.forwardLayer!=null&&this.forwardLayer.setFastWeightInitDuringBuild(t),this.backwardLayer!=null&&this.backwardLayer.setFastWeightInitDuringBuild(t)}getConfig(){let t={mergeMode:this.mergeMode},e=super.getConfig();return Object.assign(t,e),t}static fromConfig(t,e){let r=Ss(e.layer);if(delete e.layer,e.numConstants!=null)throw new Zt("Deserialization of a Bidirectional layer with numConstants present is not supported yet.");let s=e;return s.layer=r,new t(s)}}I0.className="Bidirectional",kt(I0);function hG(n){return new Ku(n)}function fG(n){return new zw(n)}function pG(n){return new Mw(n)}function dG(n){return new Lw(n)}function mG(n){return new Bw(n)}function gG(n){return new Vw(n)}function vG(n){return new Ww(n)}function yG(n){return new Qh(n)}function bG(n){return new Qu(n)}function wG(n){return new Hw(n)}function xG(n){return 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uq=Object.freeze({__proto__:null,json:iq});let 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lq=Object.freeze({__proto__:null,json:cq});let hq=[{tfOpName:"ResizeBilinear",category:"image",inputs:[{start:0,name:"images",type:"tensor"},{start:1,name:"size",type:"number[]"}],attrs:[{tfName:"align_corners",name:"alignCorners",type:"bool"},{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"ResizeNearestNeighbor",category:"image",inputs:[{start:0,name:"images",type:"tensor"},{start:1,name:"size",type:"number[]"}],attrs:[{tfName:"align_corners",name:"alignCorners",type:"bool"},{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"CropAndResize",category:"image",inputs:[{start:0,name:"image",type:"tensor"},{start:1,name:"boxes",type:"tensor"},{start:2,name:"boxInd",type:"tensor"},{start:3,name:"cropSize",type:"number[]"}],attrs:[{tfName:"method",name:"method",type:"string"},{tfName:"extrapolation_value",name:"extrapolationValue",type:"number"}]}];var fq=Object.freeze({__proto__:null,json:hq});let pq=[{tfOpName:"Equal",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"NotEqual",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"Greater",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"GreaterEqual",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"Less",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"LessEqual",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"LogicalAnd",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"LogicalNot",category:"logical",inputs:[{start:0,name:"a",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"LogicalOr",category:"logical",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"Select",category:"logical",inputs:[{start:0,name:"condition",type:"tensor"},{start:1,name:"a",type:"tensor"},{start:2,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"SelectV2",category:"logical",inputs:[{start:0,name:"condition",type:"tensor"},{start:1,name:"a",type:"tensor"},{start:2,name:"b",type:"tensor"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]}];var dq=Object.freeze({__proto__:null,json:pq});let mq=[{tfOpName:"_FusedMatMul",category:"matrices",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"},{start:2,end:0,name:"args",type:"tensors"}],attrs:[{tfName:"num_args",name:"numArgs",type:"number"},{tfName:"fused_ops",name:"fusedOps",type:"string[]",defaultValue:[]},{tfName:"epsilon",name:"epsilon",type:"number",defaultValue:1e-4},{tfName:"transpose_a",name:"transposeA",type:"bool",defaultValue:!1},{tfName:"transpose_b",name:"transposeB",type:"bool",defaultValue:!1},{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"MatMul",category:"matrices",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"transpose_a",name:"transposeA",type:"bool",defaultValue:!1},{tfName:"transpose_b",name:"transposeB",type:"bool",defaultValue:!1},{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"BatchMatMul",category:"matrices",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"adj_x",name:"transposeA",type:"bool",defaultValue:!1},{tfName:"adj_y",name:"transposeB",type:"bool",defaultValue:!1},{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"BatchMatMulV2",category:"matrices",inputs:[{start:0,name:"a",type:"tensor"},{start:1,name:"b",type:"tensor"}],attrs:[{tfName:"adj_x",name:"transposeA",type:"bool",defaultValue:!1},{tfName:"adj_y",name:"transposeB",type:"bool",defaultValue:!1},{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]},{tfOpName:"Transpose",category:"matrices",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"perm",type:"number[]"}],attrs:[{tfName:"T",name:"dtype",type:"dtype",notSupported:!0}]}];var gq=Object.freeze({__proto__:null,json:mq});let vq=[{tfOpName:"FusedBatchNorm",category:"normalization",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"scale",type:"tensor"},{start:2,name:"offset",type:"tensor"},{start:3,name:"mean",type:"tensor"},{start:4,name:"variance",type:"tensor"}],attrs:[{tfName:"epsilon",name:"epsilon",type:"number",defaultValue:.001},{tfName:"data_format",name:"dataFormat",type:"string",notSupported:!0}]},{tfOpName:"FusedBatchNormV2",category:"normalization",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"scale",type:"tensor"},{start:2,name:"offset",type:"tensor"},{start:3,name:"mean",type:"tensor"},{start:4,name:"variance",type:"tensor"}],attrs:[{tfName:"epsilon",name:"epsilon",type:"number",defaultValue:.001},{tfName:"data_format",name:"dataFormat",type:"string",notSupported:!0}]},{tfOpName:"FusedBatchNormV3",category:"normalization",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"scale",type:"tensor"},{start:2,name:"offset",type:"tensor"},{start:3,name:"mean",type:"tensor"},{start:4,name:"variance",type:"tensor"}],attrs:[{tfName:"epsilon",name:"epsilon",type:"number",defaultValue:.001},{tfName:"data_format",name:"dataFormat",type:"string",notSupported:!0}]},{tfOpName:"LRN",category:"normalization",inputs:[{start:0,name:"x",type:"tensor"}],attrs:[{tfName:"depth_radius",name:"radius",type:"number",defaultValue:5},{tfName:"bias",name:"bias",type:"number",defaultValue:1},{tfName:"alpha",name:"alpha",type:"number",defaultValue:1},{tfName:"beta",name:"beta",type:"number",defaultValue:.5}]},{tfOpName:"Softmax",category:"normalization",inputs:[{start:0,name:"x",type:"tensor"}]},{tfOpName:"LogSoftmax",category:"normalization",inputs:[{start:0,name:"x",type:"tensor"}]},{tfOpName:"SparseToDense",category:"normalization",inputs:[{start:0,name:"sparseIndices",type:"tensor"},{start:1,name:"outputShape",type:"number[]"},{start:2,name:"sparseValues",type:"tensor"},{start:3,name:"defaultValue",type:"tensor"}],attrs:[{tfName:"validate_indices",name:"validateIndices",type:"bool",defaultValue:!0,notSupported:!0}]}];var yq=Object.freeze({__proto__:null,json:vq});let bq=[{tfOpName:"Max",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"Mean",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"Min",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"Sum",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"All",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"Any",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"ArgMax",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number"}]},{tfOpName:"ArgMin",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number"}]},{tfOpName:"Prod",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}],attrs:[{tfName:"keep_dims",name:"keepDims",type:"bool"}]},{tfOpName:"Cumsum",category:"reduction",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number"}],attrs:[{tfName:"exclusive",name:"exclusive",type:"bool"},{tfName:"reverse",name:"reverse",type:"bool"}]}];var wq=Object.freeze({__proto__:null,json:bq});let xq=[{tfOpName:"ConcatV2",category:"slice_join",inputs:[{start:0,end:-1,name:"tensors",type:"tensors"},{start:-1,name:"axis",type:"number"}],attrs:[{tfName:"N",name:"n",type:"number",defaultValue:2}]},{tfOpName:"Concat",category:"slice_join",inputs:[{start:1,end:0,name:"tensors",type:"tensors"},{start:0,name:"axis",type:"number"}],attrs:[{tfName:"N",name:"n",type:"number",defaultValue:2}]},{tfOpName:"GatherV2",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"indices",type:"tensor"},{start:2,name:"axis",type:"number",defaultValue:0}]},{tfOpName:"Gather",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"indices",type:"tensor"}],attrs:[{tfName:"axis",name:"axis",type:"number",defaultValue:0},{tfName:"validate_indices",name:"validateIndices",type:"bool",notSupported:!0}]},{tfOpName:"Reverse",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"dims",type:"bool",notSupported:!0}]},{tfOpName:"ReverseV2",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number[]"}]},{tfOpName:"Slice",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"begin",type:"number[]"},{start:2,name:"size",type:"number[]"}]},{tfOpName:"StridedSlice",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"begin",type:"number[]"},{start:2,name:"end",type:"number[]"},{start:3,name:"strides",type:"number[]"}],attrs:[{tfName:"begin_mask",name:"beginMask",type:"number",defaultValue:0},{tfName:"end_mask",name:"endMask",type:"number",defaultValue:0},{tfName:"new_axis_mask",name:"newAxisMask",type:"number",defaultValue:0},{tfName:"ellipsis_mask",name:"ellipsisMask",type:"number",defaultValue:0},{tfName:"shrink_axis_mask",name:"shrinkAxisMask",type:"number",defaultValue:0}]},{tfOpName:"Pack",category:"slice_join",inputs:[{start:0,end:0,name:"tensors",type:"tensors"}],attrs:[{tfName:"axis",name:"axis",type:"number",defaultValue:0}]},{tfOpName:"Unpack",category:"slice_join",inputs:[{start:0,name:"tensor",type:"tensor"}],attrs:[{tfName:"axis",name:"axis",type:"number",defaultValue:0},{tfName:"num",name:"num",type:"number",defaultValue:0,notSupported:!0}]},{tfOpName:"Tile",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"reps",type:"number[]"}]},{tfOpName:"Split",category:"slice_join",inputs:[{start:0,name:"axis",type:"number",defaultValue:0},{start:1,name:"x",type:"tensor"}],attrs:[{tfName:"num_split",name:"numOrSizeSplits",type:"number",defaultValue:1}]},{tfOpName:"SplitV",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"numOrSizeSplits",type:"number[]"},{start:2,name:"axis",type:"number",defaultValue:0}]},{tfOpName:"ScatterNd",category:"slice_join",inputs:[{start:0,name:"indices",type:"tensor"},{start:1,name:"values",type:"tensor"},{start:2,name:"shape",type:"number[]"}]},{tfOpName:"GatherNd",category:"slice_join",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"indices",type:"tensor"}]},{tfOpName:"SparseToDense",category:"slice_join",inputs:[{start:0,name:"sparseIndices",type:"tensor"},{start:1,name:"outputShape",type:"number[]"},{start:2,name:"sparseValues",type:"tensor"},{start:3,name:"defaultValue",type:"tensor"}],attrs:[{tfName:"validate_indices",name:"validateIndices",type:"bool",defaultValue:!1,notSupported:!0}]}];var Tq=Object.freeze({__proto__:null,json:xq});let kq=[{tfOpName:"FFT",category:"spectral",inputs:[{start:0,name:"x",type:"tensor"}]},{tfOpName:"IFFT",category:"spectral",inputs:[{start:0,name:"x",type:"tensor"}]},{tfOpName:"RFFT",category:"spectral",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"fft_length",type:"number",notSupported:!0}]},{tfOpName:"IRFFT",category:"spectral",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"fft_length",type:"number",notSupported:!0}]}];var Sq=Object.freeze({__proto__:null,json:kq});let Cq=[{tfOpName:"Cast",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"}],attrs:[{tfName:"SrcT",name:"sdtype",type:"dtype",notSupported:!0},{tfName:"DstT",name:"dtype",type:"dtype"}]},{tfOpName:"ExpandDims",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"axis",type:"number"}]},{tfOpName:"MirrorPad",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"padding",type:"number[]"}],attrs:[{tfName:"mode",name:"mode",type:"string"}]},{tfOpName:"Pad",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"padding",type:"number[]"}],attrs:[{tfName:"constant_value",name:"constantValue",type:"number",defaultValue:0}]},{tfOpName:"PadV2",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"padding",type:"number[]"},{start:2,name:"constantValue",type:"number",defaultValue:0}]},{tfOpName:"Reshape",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"shape",type:"number[]"}]},{tfOpName:"Squeeze",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"}],attrs:[{tfName:"axis",tfDeprecatedName:"squeeze_dims",name:"axis",type:"number[]"}]},{tfOpName:"SpaceToBatchND",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"blockShape",type:"number[]"},{start:2,name:"paddings",type:"number[]"}]},{tfOpName:"BatchToSpaceND",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"blockShape",type:"number[]"},{start:2,name:"crops",type:"number[]"}]},{tfOpName:"DepthToSpace",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"}],attrs:[{tfName:"block_size",name:"blockSize",type:"number"},{tfName:"data_format",name:"dataFormat",type:"string"}]},{tfOpName:"BroadcastTo",category:"transformation",inputs:[{start:0,name:"x",type:"tensor"},{start:1,name:"shape",type:"number[]"}],attrs:[]}];var Nq=Object.freeze({__proto__:null,json:Cq});class _I{static get Instance(){return this._instance||(this._instance=new this)}constructor(){let t=[KH,YH,ZH,tq,nq,sq,aq,dq,fq,uq,gq,yq,wq,Tq,Sq,Nq,lq],e=[].concat(...t.map(r=>r.json));this.opMappers=e.reduce((r,s)=>(r[s.tfOpName]=s,r),{})}transformGraph(t,e={}){let r=t.node,s=[],u=[],l=[],h=r.reduce((I,D)=>(I[D.name]=this.mapNode(D),D.op.startsWith("Placeholder")?s.push(I[D.name]):D.op==="Const"?u.push(I[D.name]):(D.input==null||D.input.length===0)&&l.push(I[D.name]),I),{}),p=[],m=[],y={},b={};e!=null&&(y=this.mapSignatureEntries(e.inputs),b=this.mapSignatureEntries(e.outputs));let x=Object.keys(h);x.forEach(I=>{let D=h[I];D.inputNames.forEach(R=>{let[A]=Eo(R);D.inputs.push(h[A]),h[A].children.push(D)})}),Object.keys(b).length===0?x.forEach(I=>{let D=h[I];D.children.length===0&&m.push(D)}):Object.keys(b).forEach(I=>{let[D]=Eo(I),R=h[D];R!=null&&(R.signatureKey=b[I],m.push(R))}),Object.keys(y).length>0?Object.keys(y).forEach(I=>{let[D]=Eo(I),R=h[D];R&&(R.signatureKey=y[I],p.push(R))}):p=s;let S={};t.library!=null&&t.library.function!=null&&(S=t.library.function.reduce((I,D)=>(I[D.signature.name]=this.mapFunction(D),I),{}));let C={nodes:h,inputs:p,outputs:m,weights:u,placeholders:s,signature:e,functions:S};return l.length>0&&(C.initNodes=l),C}mapSignatureEntries(t){return Object.keys(t||{}).reduce((e,r)=>(e[t[r].name]=r,e),{})}mapNode(t){let e=AI(t.op)||this.opMappers[t.op]||{};t.attr==null&&(t.attr={});let r={name:t.name,op:t.op,category:e.category,inputNames:(t.input||[]).map(s=>s.startsWith("^")?s.substr(1):s),inputs:[],children:[],inputParams:{},attrParams:{},rawAttrs:t.attr};return e.inputs!=null&&(r.inputParams=e.inputs.reduce((s,u)=>(s[u.name]={type:u.type,inputIndexStart:u.start,inputIndexEnd:u.end},s),{})),e.attrs!=null&&(r.attrParams=e.attrs.reduce((s,u)=>{let l=u.type,h;switch(u.type){case"string":h=_0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=_0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"string[]":h=z0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=z0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"number":h=R0(t.attr,u.tfName,u.defaultValue||0),h===void 0&&!!u.tfDeprecatedName&&(h=R0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"number[]":h=B0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=B0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"bool":h=F0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=F0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"bool[]":h=V0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=V0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"shape":h=L0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=L0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"shape[]":h=W0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=W0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"dtype":h=O0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=O0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"dtype[]":h=M0(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=M0(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"func":h=RI(t.attr,u.tfName,u.defaultValue),h===void 0&&!!u.tfDeprecatedName&&(h=RI(t.attr,u.tfDeprecatedName,u.defaultValue));break;case"tensor":case"tensors":break;default:throw new Error(`Unsupported param type: ${u.type} for op: ${t.op}`)}return s[u.name]={value:h,type:l},s},{})),r}mapFunction(t){let e=t.nodeDef,r=[],s=[],u={};e!=null&&(u=e.reduce((b,x)=>(b[x.name]=this.mapNode(x),x.op==="Const"&&s.push(b[x.name]),b),{}));let l=[],h=[];t.signature.inputArg.forEach(b=>{let[x]=Eo(b.name),S={name:x,op:"Placeholder",inputs:[],inputNames:[],category:"graph",inputParams:{},attrParams:{dtype:{value:P0(b.type),type:"dtype"}},children:[]};S.signatureKey=b.name,l.push(S),u[x]=S});let p=Object.keys(u);p.forEach(b=>{let x=u[b];x.inputNames.forEach(S=>{let[C]=Eo(S);x.inputs.push(u[C]),u[C].children.push(x)})});let m=t.ret;t.signature.outputArg.forEach(b=>{let[x,S]=Eo(m[b.name]),C=u[x];C!=null&&(C.defaultOutput=S,h.push(C))});let y=this.mapArgsToSignature(t);return{nodes:u,inputs:l,outputs:h,weights:s,placeholders:r,signature:y}}mapArgsToSignature(t){return{methodName:t.signature.name,inputs:t.signature.inputArg.reduce((e,r)=>(e[r.name]=this.mapArgToTensorInfo(r),e),{}),outputs:t.signature.outputArg.reduce((e,r)=>(e[r.name]=this.mapArgToTensorInfo(r,t.ret),e),{})}}mapArgToTensorInfo(t,e){let r=t.name;return e!=null&&(r=e[r]),{name:r,dtype:t.type}}}function Iq(n){let t=ft().global;if(typeof t.atob!="undefined")return t.atob(n);if(typeof Buffer!="undefined")return new Buffer(n,"base64").toString();throw new Error("Unable to decode base64 in this environment. 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Dq=(n,t,e)=>{switch(n.op){case"BiasAdd":case"AddV2":case"Add":return[Nt(P("a",n,t,e),P("b",n,t,e))];case"AddN":return[LS(P("tensors",n,t,e))];case"FloorMod":case"Mod":return[Sd(P("a",n,t,e),P("b",n,t,e))];case"Mul":return[st(P("a",n,t,e),P("b",n,t,e))];case"RealDiv":case"Div":return[Ht(P("a",n,t,e),P("b",n,t,e))];case"DivNoNan":return[cb(P("a",n,t,e),P("b",n,t,e))];case"FloorDiv":return[ud(P("a",n,t,e),P("b",n,t,e))];case"Sub":return[Mt(P("a",n,t,e),P("b",n,t,e))];case"Minimum":return[mi(P("a",n,t,e),P("b",n,t,e))];case"Maximum":return[ts(P("a",n,t,e),P("b",n,t,e))];case"Pow":return[ys(P("a",n,t,e),P("b",n,t,e))];case"SquaredDifference":return[Dh(P("a",n,t,e),P("b",n,t,e))];default:throw TypeError(`Node type ${n.op} is not implemented`)}},dft="arithmetic";let $q=(n,t,e)=>{switch(n.op){case"Abs":case"ComplexAbs":return[kn(P("x",n,t,e))];case"Acos":return[qy(P("x",n,t,e))];case"Acosh":return[jy(P("x",n,t,e))];case"Asin":return[Yy(P("x",n,t,e))];case"Asinh":return[Jy(P("x",n,t,e))];case"Atan":return[Zy(P("x",n,t,e))];case"Atan2":return[Qy(P("x",n,t,e),P("y",n,t,e))];case"Atanh":return[tb(P("x",n,t,e))];case"Ceil":return[sb(P("x",n,t,e))];case"Complex":return[vo(P("real",n,t,e),P("imag",n,t,e))];case"Cos":return[vh(P("x",n,t,e))];case"Cosh":return[gd(P("x",n,t,e))];case"Elu":return[$u(P("x",n,t,e))];case"Erf":return[lb(P("x",n,t,e))];case"Exp":return[Br(P("x",n,t,e))];case"Expm1":return[hb(P("x",n,t,e))];case"Floor":return[_u(P("x",n,t,e))];case"Log":return[Nr(P("x",n,t,e))];case"Log1p":return[wd(P("x",n,t,e))];case"Imag":return[bh(P("x",n,t,e))];case"Neg":return[on(P("x",n,t,e))];case"Reciprocal":return[xb(P("x",n,t,e))];case"Real":return[Ou(P("x",n,t,e))];case"Relu":return[Ys(P("x",n,t,e))];case"Round":return[kb(P("x",n,t,e))];case"Selu":return[Ed(P("x",n,t,e))];case"Sigmoid":return[js(P("x",n,t,e))];case"Sin":return[Dd(P("x",n,t,e))];case"Sign":return[Cb(P("x",n,t,e))];case"Sinh":return[$d(P("x",n,t,e))];case"Softplus":return[Ru(P("x",n,t,e))];case"Sqrt":return[Wn(P("x",n,t,e))];case"Square":return[Oe(P("x",n,t,e))];case"Tanh":return[Du(P("x",n,t,e))];case"Tan":return[Eb(P("x",n,t,e))];case"Relu6":case"ClipByValue":return[fr(P("x",n,t,e),P("clipValueMin",n,t,e),P("clipValueMax",n,t,e))];case"Rsqrt":return[Id(yr(n.inputNames[0],t,e))];case"Prod":return[Nd(P("x",n,t,e),P("axes",n,t,e))];case"LeakyRelu":return[bd(P("x",n,t,e),P("alpha",n,t,e))];case"Prelu":return[Sh(P("x",n,t,e),P("alpha",n,t,e))];default:throw 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r=P("tensorArrayId",n,t,e),s=P("tensor",n,t,e),u=P("lengths",n,t,e),l=e.getTensorArray(r.id);return l.split(u,s),[l.idTensor]}case"TensorArraySizeV3":{let r=P("tensorArrayId",n,t,e),s=e.getTensorArray(r.id);return[Ot(s.size(),"int32")]}case"TensorArrayCloseV3":{let r=P("tensorArrayId",n,t,e),s=e.getTensorArray(r.id);return s.clearAndClose(),[s.idTensor]}case"TensorListSetItem":{let r=P("tensorListId",n,t,e),s=P("index",n,t,e),u=P("tensor",n,t,e),l=e.getTensorList(r.id);return l.setItem(s,u),[l.idTensor]}case"TensorListGetItem":{let r=P("tensorListId",n,t,e),s=P("index",n,t,e),u=P("elementShape",n,t,e),l=P("elementDType",n,t,e),h=e.getTensorList(r.id);return[h.getItem(s,u,l)]}case"TensorListScatterV2":case"TensorListScatter":{let r=P("indices",n,t,e),s=P("tensor",n,t,e),u=P("elementShape",n,t,e),l=P("numElements",n,t,e),h=Pq(s,r,u,l);return e.addTensorList(h),[h.idTensor]}case"TensorListReserve":{let r=P("elementShape",n,t,e),s=P("elementDType",n,t,e),u=P("numElements",n,t,e),l=Rq(r,s,u);return e.addTensorList(l),[l.idTensor]}case"TensorListGather":{let r=P("tensorListId",n,t,e),s=P("indices",n,t,e),u=P("elementShape",n,t,e),l=P("elementDType",n,t,e),h=e.getTensorList(r.id);return[h.gather(s,l,u)]}case"TensorListStack":{let r=P("tensorListId",n,t,e),s=P("elementShape",n,t,e),u=P("elementDType",n,t,e),l=P("numElements",n,t,e),h=e.getTensorList(r.id);return[h.stack(s,u,l)]}case"TensorListFromTensor":{let r=P("tensor",n,t,e),s=P("elementShape",n,t,e),u=P("elementDType",n,t,e),l=Fq(r,s,u);return e.addTensorList(l),[l.idTensor]}case"TensorListConcat":{let r=P("tensorListId",n,t,e),s=e.getTensorList(r.id),u=P("dtype",n,t,e),l=P("elementShape",n,t,e);return[s.concat(u,l)]}case"TensorListPushBack":{let r=P("tensorListId",n,t,e),s=P("tensor",n,t,e),u=e.getTensorList(r.id);return u.pushBack(s),[u.idTensor]}case"TensorListPopBack":{let 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m=P("strides",n,t,e),y=$m(n,t,e),b=P("dataFormat",n,t,e).toUpperCase(),x=P("dilations",n,t,e),[S,C]=P("args",n,t,e);return{stride:m,pad:y,dataFormat:b,dilations:x,biasArg:S,preluArg:C,activationFunc:s}}let Lq=(n,t,e)=>{switch(n.op){case"Conv1D":{let r=P("stride",n,t,e),s=P("pad",n,t,e),u=P("dataFormat",n,t,e).toUpperCase(),l=P("dilation",n,t,e);return[dd(P("x",n,t,e),P("filter",n,t,e),r,s,u,l)]}case"Conv2D":{let 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r=P("strides",n,t,e),s=P("pad",n,t,e),u=P("kernelSize",n,t,e);return[gb(P("x",n,t,e),[u[1],u[2],u[3]],[r[1],r[2],r[3]],s)]}case"Dilation2D":{let r=P("strides",n,t,e),s=P("pad",n,t,e),u=P("dilations",n,t,e),l=r[1],h=r[2],p=u[1],m=u[2];return[ub(P("x",n,t,e),P("filter",n,t,e),[l,h],s,[p,m],"NHWC")]}default:throw TypeError(`Node type ${n.op} is not implemented`)}},vft="convolution";let Bq=(n,t,e)=>{switch(n.op){case"Fill":{let r=P("shape",n,t,e),s=P("dtype",n,t,e),u=P("value",n,t,e);return[Au(r,u,s)]}case"LinSpace":{let r=P("start",n,t,e),s=P("stop",n,t,e),u=P("num",n,t,e);return[QS(r,s,u)]}case"Multinomial":{let r=P("logits",n,t,e),s=P("numSamples",n,t,e),u=P("seed",n,t,e);return[rC(r,s,u)]}case"OneHot":{let 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zq=async(n,t,e)=>{switch(n.op){case"NonMaxSuppressionV5":{let{boxes:r,scores:s,maxOutputSize:u,iouThreshold:l,scoreThreshold:h,softNmsSigma:p}=U0(n,t,e),m=await da.nonMaxSuppressionWithScoreAsync(r,s,u,l,h,p);return[m.selectedIndices,m.selectedScores]}case"NonMaxSuppressionV4":{let{boxes:r,scores:s,maxOutputSize:u,iouThreshold:l,scoreThreshold:h}=U0(n,t,e),p=P("padToMaxOutputSize",n,t,e),m=await da.nonMaxSuppressionPaddedAsync(r,s,u,l,h,p);return[m.selectedIndices,m.validOutputs]}case"NonMaxSuppressionV3":case"NonMaxSuppressionV2":{let{boxes:r,scores:s,maxOutputSize:u,iouThreshold:l,scoreThreshold:h}=U0(n,t,e);return[await da.nonMaxSuppressionAsync(r,s,u,l,h)]}case"Where":{let r=Rt(P("condition",n,t,e),"bool"),s=[await Ab(r)];return r.dispose(),s}case"ListDiff":return oC(P("x",n,t,e),P("y",n,t,e));default:throw TypeError(`Node type ${n.op} is not implemented`)}},bft="dynamic";let Wq=(n,t,e)=>{switch(n.op){case"TopKV2":{let r=P("x",n,t,e),s=P("k",n,t,e),u=P("sorted",n,t,e),l=Db(r,s,u);return[l.values,l.indices]}case"Unique":{let r=P("x",n,t,e),s=Rd(r);return[s.values,s.indices]}case"UniqueV2":{let r=P("x",n,t,e),s=P("axis",n,t,e),u=Rd(r,s);return[u.values,u.indices]}default:throw TypeError(`Node type ${n.op} is not implemented`)}},wft="evaluation";let Vq=(n,t,e)=>{switch(n.op){case"Const":return t[n.name];case"PlaceholderWithDefault":let r=P("default",n,t,e);return[yr(n.name,t,e)||r];case"Placeholder":return[yr(n.name,t,e)];case"Identity":case"StopGradient":case"FakeQuantWithMinMaxVars":{let m=P("x",n,t,e);return[Do(m)]}case"IdentityN":return P("x",n,t,e).map(m=>Do(m));case"Snapshot":let s=P("x",n,t,e);return[Do(s)];case"Shape":return[Ir(P("x",n,t,e).shape,"int32")];case"ShapeN":return P("x",n,t,e).map(m=>Ir(m.shape));case"Size":return[Ot(P("x",n,t,e).size,"int32")];case"Rank":return[Ot(P("x",n,t,e).rank,"int32")];case"NoOp":return[Ot(1)];case"Print":let u=P("x",n,t,e),l=P("data",n,t,e),h=P("message",n,t,e),p=P("summarize",n,t,e);console.warn("The graph has a tf.print() operation,usually used for debugging, which slows down performance."),console.log(h);for(let m=0;m<l.length;m++)console.log(Array.prototype.slice.call(l[m].dataSync()).slice(0,p));return[u];default:throw TypeError(`Node type ${n.op} is not implemented`)}},xft="graph";class Uq{constructor(t,e){this.keyDType=t,this.valueDType=e,this.handle=Ot(0),this.tensorMap=new Map,An(this.handle)}get id(){return this.handle.id}clearAndClose(){this.tensorMap.forEach(t=>t.dispose()),this.tensorMap.clear(),this.handle.dispose()}size(){return this.tensorMap.size}async import(t,e){this.checkKeyAndValueTensor(t,e);let r=await t.data();return this.tensorMap.forEach(s=>s.dispose()),this.tensorMap.clear(),ot(()=>{let s=bs(e),u=r.length,l=s.length;k(u===l,()=>`The number of elements doesn't match, keys has ${u} elements, the values has ${l} elements.`);for(let h=0;h<u;h++){let p=r[h],m=s[h];An(m),this.tensorMap.set(p,m)}return this.handle})}async find(t,e){this.checkKeyAndValueTensor(t,e);let r=await t.data();return ot(()=>{let s=[];for(let u=0;u<r.length;u++){let l=r[u],h=this.findWithDefault(l,e);s.push(h)}return mr(s)})}findWithDefault(t,e){let r=this.tensorMap.get(t);return r!=null?r:e}checkKeyAndValueTensor(t,e){if(t.dtype!==this.keyDType)throw new Error(`Expect key dtype ${this.keyDType}, but got ${t.dtype}`);if(e.dtype!==this.valueDType)throw new Error(`Expect value dtype ${this.valueDType}, but got ${e.dtype}`)}}let Gq=async(n,t,e,r)=>{switch(n.op){case"HashTable":case"HashTableV2":{let s=P("keyDType",n,t,e),u=P("valueDType",n,t,e),l=new Uq(s,u);return r.addHashTable(n.name,l),[l.handle]}case"LookupTableImport":case"LookupTableImportV2":{let s=P("tableHandle",n,t,e,r),u=P("keys",n,t,e),l=P("values",n,t,e),h=r.getHashTableById(s.id);return[await h.import(u,l)]}case"LookupTableFind":case"LookupTableFindV2":{let s=P("tableHandle",n,t,e,r),u=P("keys",n,t,e),l=P("defaultValue",n,t,e),h=r.getHashTableById(s.id);return[await h.find(u,l)]}default:throw TypeError(`Node type ${n.op} is not implemented`)}},Tft="hash_table";let Hq=(n,t,e)=>{switch(n.op){case"ResizeBilinear":{let r=P("images",n,t,e),s=P("size",n,t,e),u=P("alignCorners",n,t,e);return[da.resizeBilinear(r,[s[0],s[1]],u)]}case"ResizeNearestNeighbor":{let r=P("images",n,t,e),s=P("size",n,t,e),u=P("alignCorners",n,t,e);return[da.resizeNearestNeighbor(r,[s[0],s[1]],u)]}case"CropAndResize":{let r=P("image",n,t,e),s=P("boxes",n,t,e),u=P("boxInd",n,t,e),l=P("cropSize",n,t,e),h=P("method",n,t,e),p=P("extrapolationValue",n,t,e);return[da.cropAndResize(r,s,u,l,h,p)]}default:throw TypeError(`Node type ${n.op} is not implemented`)}},kft="image";let qq=(n,t,e)=>{switch(n.op){case"Equal":return[gs(P("a",n,t,e),P("b",n,t,e))];case"NotEqual":return[ha(P("a",n,t,e),P("b",n,t,e))];case"Greater":return[zr(P("a",n,t,e),P("b",n,t,e))];case"GreaterEqual":return[xo(P("a",n,t,e),P("b",n,t,e))];case"Less":return[wh(P("a",n,t,e),P("b",n,t,e))];case"LessEqual":return[la(P("a",n,t,e),P("b",n,t,e))];case"LogicalAnd":return[es(P("a",n,t,e),P("b",n,t,e))];case"LogicalNot":return[xh(P("a",n,t,e))];case"LogicalOr":return[kd(P("a",n,t,e),P("b",n,t,e))];case"Select":case"SelectV2":return[er(P("condition",n,t,e),P("a",n,t,e),P("b",n,t,e))];default:throw TypeError(`Node type ${n.op} is not implemented`)}},Sft="logical";let jq=(n,t,e)=>{switch(n.op){case"BatchMatMul":case"BatchMatMulV2":case"MatMul":return[xe(P("a",n,t,e),P("b",n,t,e),P("transposeA",n,t,e),P("transposeB",n,t,e))];case"Transpose":return[re(P("x",n,t,e),P("perm",n,t,e))];case"_FusedMatMul":let[r,s]=P("fusedOps",n,t,e),u=r==="biasadd",l=s==="prelu",h=P("numArgs",n,t,e);if(u){if(l&&h!==2)throw new Error("Fused MatMul with BiasAdd and Prelu must have two extra arguments: bias and alpha.");if(!l&&h!==1)throw new Error("Fused MatMul with BiasAdd must have one extra argument: bias.")}let[p,m]=P("args",n,t,e);return[Wd({a:P("a",n,t,e),b:P("b",n,t,e),transposeA:P("transposeA",n,t,e),transposeB:P("transposeB",n,t,e),bias:p,activation:s,preluActivationWeights:m})];default:throw TypeError(`Node type ${n.op} is not implemented`)}},Cft="matrices";let Kq=(n,t,e)=>{switch(n.op){case"FusedBatchNorm":case"FusedBatchNormV2":return[fi(P("x",n,t,e),P("mean",n,t,e),P("variance",n,t,e),P("offset",n,t,e),P("scale",n,t,e),P("epsilon",n,t,e))];case"FusedBatchNormV3":return[fi(P("x",n,t,e),P("mean",n,t,e),P("variance",n,t,e),P("offset",n,t,e),P("scale",n,t,e),P("epsilon",n,t,e))];case"LRN":return[pb(P("x",n,t,e),P("radius",n,t,e),P("bias",n,t,e),P("alpha",n,t,e),P("beta",n,t,e))];case"Softmax":return[bi(P("x",n,t,e))];case"LogSoftmax":return[Td(P("x",n,t,e))];case"SparseToDense":return[_b(P("sparseIndices",n,t,e),P("outputShape",n,t,e),P("sparseValues",n,t,e),P("defaultValue",n,t,e))];default:throw TypeError(`Node type ${n.op} is not implemented`)}},Nft="normalization";let Xq=(n,t,e)=>{switch(n.op){case"Max":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[dr(P("x",n,t,e),r,s)]}case"Mean":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[an(P("x",n,t,e),r,s)]}case"Min":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[Pu(P("x",n,t,e),r,s)]}case"Sum":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[Xt(P("x",n,t,e),r,s)]}case"All":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[cd(P("x",n,t,e),r,s)]}case"Any":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[hh(P("x",n,t,e),r,s)]}case"ArgMax":{let r=P("axis",n,t,e);return[fh(P("x",n,t,e),r)]}case"ArgMin":{let r=P("axis",n,t,e);return[Xy(P("x",n,t,e),r)]}case"Prod":{let r=P("axis",n,t,e),s=P("keepDims",n,t,e);return[Nd(P("x",n,t,e),r,s)]}case"Cumsum":{let r=P("axis",n,t,e),s=P("exclusive",n,t,e),u=P("reverse",n,t,e);return[vd(P("x",n,t,e),r,s,u)]}default:throw TypeError(`Node type ${n.op} is not implemented`)}},Ift="reduction";let Yq=(n,t,e)=>{switch(n.op){case"ConcatV2":case"Concat":{let r=P("n",n,t,e),s=P("axis",n,t,e),u=P("tensors",n,t,e);return u=u.slice(0,r),[sn(u,s)]}case"GatherV2":case"Gather":{let r=P("axis",n,t,e),s=P("x",n,t,e),u=P("indices",n,t,e);return[Fu(s,Rt(u,"int32"),r)]}case"ReverseV2":case"Reverse":{let r=P("axis",n,t,e),s=P("x",n,t,e);return[Wr(s,r)]}case"Slice":{let r=P("begin",n,t,e),s=P("size",n,t,e);return[ge(P("x",n,t,e),r,s)]}case"StridedSlice":{let r=P("begin",n,t,e),s=P("end",n,t,e),u=P("strides",n,t,e),l=P("beginMask",n,t,e),h=P("endMask",n,t,e),p=P("ellipsisMask",n,t,e),m=P("newAxisMask",n,t,e),y=P("shrinkAxisMask",n,t,e),b=P("x",n,t,e);return[Ib(b,r,s,u,l,h,p,m,y)]}case"Pack":return ot(()=>{let r=P("axis",n,t,e),s=P("tensors",n,t,e),u=s[0].shape,l=fa(s[0]).shape,h=s.map(p=>{let m=K(p.shape,u);if(!m&&!K(fa(p).shape,l))throw new Error("the input tensors shape does not match");return m?p:rt(p,u)});return[mr(h,r)]});case"Unpack":{let r=P("axis",n,t,e),s=P("tensor",n,t,e);return bs(s,r)}case"Tile":{let r=P("reps",n,t,e);return[ca(P("x",n,t,e),r)]}case"Split":case"SplitV":{let r=P("axis",n,t,e),s=P("numOrSizeSplits",n,t,e),u=P("x",n,t,e);return Er(u,s,r)}case"ScatterNd":{let r=P("indices",n,t,e),s=P("values",n,t,e),u=P("shape",n,t,e);return[SC(r,s,u)]}case"GatherNd":{let r=P("x",n,t,e),s=P("indices",n,t,e);return[CC(r,s)]}case"SparseToDense":{let r=P("sparseIndices",n,t,e),s=P("outputShape",n,t,e),u=P("sparseValues",n,t,e),l=P("defaultValue",n,t,e);return[_b(r,u,s,u.dtype===l.dtype?l:Rt(l,u.dtype))]}default:throw TypeError(`Node type ${n.op} is not implemented`)}},Eft="slice_join";let Jq=(n,t,e)=>{switch(n.op){case"FFT":return[Ih(P("x",n,t,e))];case"IFFT":return[Bu(P("x",n,t,e))];case"RFFT":return[Eh(P("x",n,t,e))];case"IRFFT":return[Fd(P("x",n,t,e))];default:throw TypeError(`Node type ${n.op} is not implemented`)}},Dft="spectral";let Zq=(n,t,e)=>{switch(n.op){case"Cast":return[Rt(P("x",n,t,e),P("dtype",n,t,e))];case"ExpandDims":{let r=P("axis",n,t,e);return[pr(P("x",n,t,e),r)]}case"Squeeze":{let r=P("axis",n,t,e);return[fa(P("x",n,t,e),r)]}case"Reshape":return[rt(P("x",n,t,e),P("shape",n,t,e))];case"MirrorPad":return[vb(P("x",n,t,e),P("padding",n,t,e),P("mode",n,t,e))];case"PadV2":case"Pad":return[Xs(P("x",n,t,e),P("padding",n,t,e),P("constantValue",n,t,e))];case"SpaceToBatchND":{let r=P("blockShape",n,t,e),s=P("paddings",n,t,e);return[kh(P("x",n,t,e),r,s)]}case"BatchToSpaceND":{let r=P("blockShape",n,t,e),s=P("crops",n,t,e);return[mh(P("x",n,t,e),r,s)]}case"DepthToSpace":{let r=P("blockSize",n,t,e),s=P("dataFormat",n,t,e).toUpperCase();return[ib(P("x",n,t,e),r,s)]}case"BroadcastTo":return[gh(P("x",n,t,e),P("shape",n,t,e))];default:throw TypeError(`Node type ${n.op} is not implemented`)}},$ft="transformation";function MI(n,t,e,r){let s=((u,l,h)=>{switch(u.category){case"arithmetic":return ot(()=>Dq(u,l,h));case"basic_math":return ot(()=>$q(u,l,h));case"control":return Mq(u,l,h);case"convolution":return ot(()=>Lq(u,l,h));case"creation":return ot(()=>Bq(u,l,h));case"dynamic":return zq(u,l,h);case"evaluation":return ot(()=>Wq(u,l,h));case"image":return ot(()=>Hq(u,l,h));case"graph":return ot(()=>Vq(u,l,h));case"logical":return ot(()=>qq(u,l,h));case"matrices":return ot(()=>jq(u,l,h));case"normalization":return ot(()=>Kq(u,l,h));case"reduction":return ot(()=>Xq(u,l,h));case"slice_join":return ot(()=>Yq(u,l,h));case"spectral":return ot(()=>Jq(u,l,h));case"transformation":return ot(()=>Zq(u,l,h));case"hash_table":return Gq(u,l,h,r);case"custom":let p=AI(u.op);if(p&&p.customExecutor)return p.customExecutor(new Eq(u,l,h));throw TypeError(`Custom op ${u.op} is not registered.`);default:throw TypeError(`Unknown op '${u.op}'. File an issue at https://github.com/tensorflow/tfjs/issues so we can add it, or register a custom execution with tf.registerOp()`)}})(n,t,e);return ni(s)?s.then(u=>[].concat(u)):[].concat(s)}class LI{constructor(t={},e={},r={},s={}){this.weightMap=t,this.tensorArrayMap=e,this.tensorListMap=r,this.functionMap=s,this.rootContext={id:0,frameName:"",iterationId:0},this.contexts=[this.rootContext],this.lastId=0,this.generateCurrentContextIds()}newFrame(t,e){return{id:t,frameName:e,iterationId:0}}set currentContext(t){this.contexts!==t&&(this.contexts=t,this.generateCurrentContextIds())}get currentContext(){return this.contexts}get currentContextId(){return this._currentContextIds[0]}get currentContextIds(){return this._currentContextIds}generateCurrentContextIds(){let t=[];for(let e=0;e<this.contexts.length-1;e++){let r=this.contexts.slice(0,this.contexts.length-e);t.push(this.contextIdforContexts(r))}t.push(""),this._currentContextIds=t}contextIdforContexts(t){return t?t.map(e=>e.id===0&&e.iterationId===0?"":`${e.frameName}-${e.iterationId}`).join("/"):""}enterFrame(t){this.contexts&&(this.lastId++,this.contexts=this.contexts.slice(),this.contexts.push(this.newFrame(this.lastId,t)),this._currentContextIds.unshift(this.contextIdforContexts(this.contexts)))}exitFrame(){if(this.contexts&&this.contexts.length>1)this.contexts=this.contexts.slice(),this.contexts.splice(-1),this.currentContextIds.shift();else throw new Error("Cannot exit frame, the context is empty")}nextIteration(){if(this.contexts&&this.contexts.length>0){this.contexts=this.contexts.slice(),this.lastId++;let t=Object.assign({},this.contexts[this.contexts.length-1]);t.iterationId+=1,t.id=this.lastId,this.contexts.splice(-1,1,t),this._currentContextIds.splice(0,1,this.contextIdforContexts(this.contexts))}else throw new Error("Cannot increase frame iteration, the context is empty")}getWeight(t){return this.weightMap[t]}addTensorArray(t){this.tensorArrayMap[t.id]=t}getTensorArray(t){return this.tensorArrayMap[t]}addTensorList(t){this.tensorListMap[t.id]=t}getTensorList(t){return this.tensorListMap[t]}dispose(t){for(let e in this.tensorArrayMap)this.tensorArrayMap[e].clearAndClose(t);for(let e in this.tensorListMap)this.tensorListMap[e].clearAndClose(t)}}function BI(n,t,e,r){let s=new Set,u=[],l=null,h=null,p=new Set,m=Object.keys(n).map(x=>$r(x)[0]),y=[];r!=null&&(y=r.map(x=>$r(x.name)[0]));let b=[...t];for(;b.length>0;){let x=b.pop();if((zI(x)||rj(x)||sj(x))&&(l==null&&(l=x,h=l.children.map(S=>S.name).filter(S=>s.has(S)))),s.add(x.name),e[x.name]!=null)continue;if(m.indexOf(x.name)!==-1)continue;if(y.indexOf(x.name)!==-1)continue;if(x.inputs.length===0){u.push(x.name);continue}x.inputs.forEach(S=>{if(p.has(S.name))return;p.add(S.name),b.push(S)})}return{inputs:n,outputs:t,usedNodes:s,missingInputs:u,dynamicNode:l,syncInputs:h}}function Qq(n,t,e){let{usedNodes:r,inputs:s}=e,u=[],l=Object.keys(s).map(y=>$r(y)[0]).map(y=>n.nodes[y]),h=n.initNodes;l.forEach(y=>{r.has(y.name)&&u.push(y)}),n.weights.forEach(y=>{r.has(y.name)&&u.push(y)}),h!=null&&h.forEach(y=>{r.has(y.name)&&u.push(y)});let p=new Set,m=[];for(;u.length>0;){let y=u.pop();p.add(y.name),t[y.name]||m.push(y),y.children.forEach(b=>{!p.has(b.name)&&r.has(b.name)&&b.inputs.every(x=>p.has(x.name))&&u.push(b)})}return m}let tj=["Switch","Merge","Enter","Exit","NextIteration","StatelessIf","StatelessWhile","if","While"],ej=["NonMaxSuppressionV2","NonMaxSuppressionV3","NonMaxSuppressionV5","Where"],nj=["HashTable","HashTableV2","LookupTableImport","LookupTableImportV2","LookupTableFind","LookupTableFindV2"];function zI(n){return tj.indexOf(n.op)>=0}function rj(n){return ej.indexOf(n.op)>=0}function sj(n){return nj.indexOf(n.op)>=0}class Am{constructor(t,e){this.graph=t,this.parent=e,this.compiledMap=new Map,this._weightMap={},this.SEPERATOR=",",this._functions={},this._functionExecutorMap={},this._outputs=t.outputs,this._inputs=t.inputs,this._initNodes=t.initNodes,this._signature=t.signature,this._functions=t.functions,t.functions!=null&&Object.keys(t.functions).forEach(r=>{this._functionExecutorMap[r]=new Am(t.functions[r],this)})}get weightIds(){return this.parent?this.parent.weightIds:this._weightIds}get functionExecutorMap(){return this.parent?this.parent.functionExecutorMap:this._functionExecutorMap}get weightMap(){return this.parent?this.parent.weightMap:this._weightMap}set weightMap(t){let e=Object.keys(t).map(r=>t[r].map(s=>s.id));this._weightIds=[].concat(...e),this._weightMap=t}set resourceManager(t){this._resourceManager=t}get inputs(){return this._inputs.map(t=>({name:t.name,shape:t.attrParams.shape?t.attrParams.shape.value:void 0,dtype:t.attrParams.dtype?t.attrParams.dtype.value:void 0}))}get outputs(){return this._outputs.map(t=>({name:t.name,shape:t.attrParams.shape?t.attrParams.shape.value:void 0,dtype:t.attrParams.dtype?t.attrParams.dtype.value:void 0}))}get inputNodes(){return this._inputs.map(t=>t.signatureKey||t.name)}get outputNodes(){return this._outputs.map(t=>{let e=t.signatureKey||t.name;return t.defaultOutput?`${e}:${t.defaultOutput}`:e})}get functions(){return Object.keys(this._functions).reduce((t,e)=>(t[e]=this._functions[e].signature,t),{})}getCompilationKey(t,e){let r=t.map(u=>u.name).sort(),s=e.map(u=>u.name).sort();return r.join(this.SEPERATOR)+"--"+s.join(this.SEPERATOR)}compile(t,e){let r=BI(t,e,this.weightMap,this._initNodes),{missingInputs:s,dynamicNode:u,syncInputs:l}=r;if(u!=null)throw new Error(`This execution contains the node '${u.name}', which has the dynamic op '${u.op}'. Please use model.executeAsync() instead. Alternatively, to avoid the dynamic ops, specify the inputs [${l}]`);if(s.length>0){let h=e.map(m=>m.name),p=Object.keys(t);throw new Error(`Cannot compute the outputs [${h}] from the provided inputs [${p}]. Missing the following inputs: [${s}]`)}return Qq(this.graph,this.weightMap,r)}execute(t,e){t=this.mapInputs(t);let r=Object.keys(t).sort();this.checkInputs(t),this.checkInputShapeAndType(t),e=this.mapOutputs(e),this.checkOutputs(e);let s=r.map(b=>this.graph.nodes[$r(b)[0]]),u=e.map(b=>$r(b)[0]),l=u.map(b=>this.graph.nodes[b]);l.length===0&&(l=this._outputs);let h=this.getCompilationKey(s,l),p=this.compiledMap.get(h);p==null&&(p=this.compile(t,l),this.compiledMap.set(h,p));let m={},y={};return ot(()=>{let b=new LI(this.weightMap,m,y,this.functionExecutorMap),x=Object.assign({},this.weightMap);Object.keys(t).forEach(I=>{let[D,R]=$r(I),A=[];A[R]=t[I],x[D]=A});let S=this.getFrozenTensorIds(x),C={};for(let I=0;I<p.length;I++){let D=p[I];if(!x[D.name]){let R=MI(D,x,b,this._resourceManager);if(ni(R))throw new Error(`The execution of the op '${D.op}' returned a promise. Please use model.executeAsync() instead.`);x[D.name]=R,this.checkTensorForDisposal(D.name,D,x,b,S,u,C)}}return this.parent==null&&b.dispose(S),e.map(I=>yr(I,x,b))})}getFrozenTensorIds(t){let e=[].concat.apply([],Object.keys(t).map(r=>t[r]).map(r=>r.map(s=>s.id)));return new Set(e)}checkTensorForDisposal(t,e,r,s,u,l,h){if(e.category==="control"||l.indexOf(t)!==-1)return;r[t].forEach(p=>{p!=null&&(h[p.id]=(h[p.id]||0)+e.children.length)}),e.inputs.forEach(p=>{if(p.category!=="control"){let m=qH(p.name,r,s);m!=null&&m.forEach(y=>{if(y&&!u.has(y.id)){let b=h[y.id];b===1?(y.dispose(),delete h[y.id]):b!=null&&h[y.id]--}})}})}async executeAsync(t,e){return this._executeAsync(t,e)}async _executeAsync(t,e,r=!1,s={},u={}){r||(t=this.mapInputs(t),this.checkInputs(t),this.checkInputShapeAndType(t),e=this.mapOutputs(e),this.checkOutputs(e));let l=new LI(this.weightMap,s,u,this.functionExecutorMap),h=await this.executeWithControlFlow(t,l,e,r),p=e.map(x=>yr(x,h,l)),m=p.map(x=>x.id),y=Object.keys(t).map(x=>t[x].id),b=new Set([...m,...y,...this.weightIds]);return Object.keys(h).forEach(x=>{let S=h[x];S.forEach(C=>{C&&!C.isDisposed&&!b.has(C.id)&&C.dispose()})}),this.parent==null&&l.dispose(b),p}async executeFunctionAsync(t,e,r){let s=t.reduce((u,l,h)=>(u[this.inputs[h].name]=l,u),{});return this._executeAsync(s,this.outputNodes,!0,e,r)}async executeWithControlFlow(t,e,r,s){let u=Object.keys(t),l=u.map(L=>this.graph.nodes[$r(L)[0]]),h=r.map(L=>$r(L)[0]),p=h.map(L=>this.graph.nodes[L]);p.length===0&&(p=this._outputs);let{usedNodes:m,missingInputs:y,dynamicNode:b,syncInputs:x}=BI(t,p,this.weightMap,this._initNodes),S=[...l,...this.graph.weights,...this._initNodes||[]].map(L=>({node:L,contexts:e.currentContext})),C=Object.assign({},this.weightMap);Object.keys(t).forEach(L=>{let[_,B]=$r(L),V=[];V[B]=t[L],C[_]=V});let I={},D=this.getFrozenTensorIds(C),R={};for(;S.length>0;){let L=this.processStack(l,S,e,C,R,D,h,I,m);await Promise.all(L)}b==null&&!s&&console.warn("This model execution did not contain any nodes with control flow or dynamic output shapes. You can use model.execute() instead.");let A=p.filter(L=>!zI(L)&&!yr(L.name,C,e)).map(L=>L.name);if(A.length>0){let L="";throw b!=null&&(L=`Alternatively, to avoid the dynamic ops, use model.execute() and specify the inputs [${x}]`),new Error(`Cannot compute the outputs [${A}] from the provided inputs [${u}]. Consider providing the following inputs: [${y}]. ${L}`)}return C}processStack(t,e,r,s,u,l,h,p,m){let y=[];for(;e.length>0;){let b=e.pop();r.currentContext=b.contexts;let x="";if(b.node.op==="Enter"&&P("isConstant",b.node,s,r)&&([x]=Eo(b.node.name,r)),s[b.node.name]==null){let S=MI(b.node,s,r,this._resourceManager);x||([x]=Eo(b.node.name,r));let C=r.currentContext;ni(S)?y.push(S.then(I=>(s[x]=I,r.currentContext=C,this.checkTensorForDisposal(x,b.node,s,r,l,h,p),this.processChildNodes(b.node,e,r,s,u,m),I))):(s[x]=S,this.checkTensorForDisposal(x,b.node,s,r,l,h,p),this.processChildNodes(b.node,e,r,s,u,m))}else this.processChildNodes(b.node,e,r,s,u,m)}return y}processChildNodes(t,e,r,s,u,l){t.children.forEach(h=>{let[p]=Eo(h.name,r);if(u[p]||!l.has(h.name))return;h.op==="Merge"?h.inputNames.some(m=>!!yr(m,s,r))&&(u[p]=!0,e.push({contexts:r.currentContext,node:h})):h.inputNames.every(m=>!!yr(m,s,r))&&(u[p]=!0,e.push({contexts:r.currentContext,node:h}))})}dispose(){Object.keys(this.weightMap).forEach(t=>this.weightMap[t].forEach(e=>e.dispose()))}checkInputShapeAndType(t){Object.keys(t).forEach(e=>{let r=t[e],[s]=$r(e),u=this.graph.nodes[s];if(u.attrParams.shape&&u.attrParams.shape.value){let l=u.attrParams.shape.value,h=l.length===r.shape.length&&r.shape.every((p,m)=>l[m]===-1||l[m]===p);k(h,()=>`The shape of dict['${u.name}'] provided in model.execute(dict) must be [${l}], but was [${r.shape}]`)}u.attrParams.dtype&&u.attrParams.dtype.value&&k(r.dtype===u.attrParams.dtype.value,()=>`The dtype of dict['${u.name}'] provided in model.execute(dict) must be ${u.attrParams.dtype.value}, but was ${r.dtype}`)})}mapInputs(t){let e={};for(let r in t)if(this._signature!=null&&this._signature.inputs!=null&&this._signature.inputs[r]!=null){let s=this._signature.inputs[r];e[s.name]=t[r]}else e[r]=t[r];return e}checkInputs(t){let e=Object.keys(t).filter(r=>{let[s]=$r(r);return this.graph.nodes[s]==null});if(e.length>0)throw new Error(`The dict provided in model.execute(dict) has keys: [${e}] that are not part of graph`)}mapOutputs(t){return t.map(e=>{if(this._signature!=null&&this._signature.outputs!=null&&this._signature.outputs[e]!=null){let r=this._signature.outputs[e];return r.name}return e},{})}checkOutputs(t){t.forEach(e=>{let[r]=$r(e);if(!this.graph.nodes[r])throw new Error(`The output '${e}' is not found in the graph`)})}}class oj{constructor(t={},e={}){this.hashTableNameToHandle=t,this.hashTableMap=e}addHashTable(t,e){this.hashTableNameToHandle[t]=e.handle,this.hashTableMap[e.id]=e}getHashTableHandleByName(t){return this.hashTableNameToHandle[t]}getHashTableById(t){return this.hashTableMap[t]}dispose(){for(let t in this.hashTableMap)this.hashTableMap[t].clearAndClose(),delete this.hashTableMap[t];for(let t in this.hashTableNameToHandle)this.hashTableNameToHandle[t].dispose(),delete this.hashTableNameToHandle[t]}}let aj="?tfjs-format=file",ij="model.json";class WI{constructor(t,e={}){this.modelUrl=t,this.loadOptions=e,this.version="n/a",e==null&&(this.loadOptions={}),this.resourceManager=new oj}get modelVersion(){return this.version}get inputNodes(){return this.executor.inputNodes}get outputNodes(){return this.executor.outputNodes}get inputs(){return this.executor.inputs}get outputs(){return this.executor.outputs}get weights(){return this.executor.weightMap}findIOHandler(){let t=this.modelUrl;if(t.load!=null)this.handler=t;else if(this.loadOptions.requestInit!=null)this.handler=ed(t,this.loadOptions);else{let e=Dy(t,this.loadOptions);if(e.length===0)e.push(ed(t,this.loadOptions));else if(e.length>1)throw new Error(`Found more than one (${e.length}) load handlers for URL '${[t]}'`);this.handler=e[0]}}async load(){if(this.findIOHandler(),this.handler.load==null)throw new Error("Cannot proceed with model loading because the IOHandler provided does not have the `load` method implemented.");let t=await this.handler.load();return this.loadSync(t)}loadSync(t){this.artifacts=t;let e=this.artifacts.modelTopology,r={};this.artifacts.userDefinedMetadata!=null&&(r=this.artifacts.userDefinedMetadata.signature),this.version=`${e.versions.producer}.${e.versions.minConsumer}`;let s=Jp(this.artifacts.weightData,this.artifacts.weightSpecs);if(this.executor=new Am(_I.Instance.transformGraph(e,r)),this.executor.weightMap=this.convertTensorMapToTensorsMap(s),this.executor.resourceManager=this.resourceManager,t.modelInitializer!=null){let u=_I.Instance.transformGraph(t.modelInitializer);this.initializer=new Am(u),this.initializer.weightMap=this.executor.weightMap,this.initializer.resourceManager=this.resourceManager,this.initializer.executeAsync({},[])}return!0}async save(t,e){if(typeof t=="string"){let r=Ey(t);if(r.length===0)throw new Error(`Cannot find any save handlers for URL '${t}'`);if(r.length>1)throw new Error(`Found more than one (${r.length}) save handlers for URL '${t}'`);t=r[0]}if(t.save==null)throw new Error("GraphModel.save() cannot proceed because the IOHandler provided does not have the `save` attribute defined.");return t.save(this.artifacts)}predict(t,e){return this.execute(t,this.outputNodes)}normalizeInputs(t){if(!(t instanceof at)&&!Array.isArray(t))return t;if(t=Array.isArray(t)?t:[t],t.length!==this.inputNodes.length)throw new Error(`Input tensor count mismatch,the graph model has ${this.inputNodes.length} placeholders, while there are ${t.length} input tensors.`);return this.inputNodes.reduce((e,r,s)=>(e[r]=t[s],e),{})}normalizeOutputs(t){return t=t||this.outputNodes,Array.isArray(t)?t:[t]}execute(t,e){t=this.normalizeInputs(t),e=this.normalizeOutputs(e);let r=this.executor.execute(t,e);return r.length>1?r:r[0]}async executeAsync(t,e){t=this.normalizeInputs(t),e=this.normalizeOutputs(e);let r=await this.executor.executeAsync(t,e);return r.length>1?r:r[0]}convertTensorMapToTensorsMap(t){return Object.keys(t).reduce((e,r)=>(e[r]=[t[r]],e),{})}dispose(){this.executor.dispose(),this.initializer&&this.initializer.dispose(),this.resourceManager.dispose()}}async function uj(n,t={}){if(n==null)throw new Error("modelUrl in loadGraphModel() cannot be null. Please provide a url or an IOHandler that loads the model");t==null&&(t={}),t.fromTFHub&&(n.load==null&&(n.endsWith("/")||(n=n+"/"),n=`${n}${ij}${aj}`));let e=new WI(n,t);return await e.load(),e}let VI="2.7.0";function cj(n,t){return _m(n,t)}function _m(n,t,e=new Map,r=new Set){if(n==null)return null;if(r.has(n))throw new Error("Circular references are not supported.");if(e.has(n))return e.get(n);let s=t(n);if(s.recurse&&s.value!==null)throw new Error("A deep map function may not return both a value and recurse=true.");if(s.recurse)if(nc(n)){let u=Array.isArray(n)?[]:{};r.add(n);for(let l in n){let h=n[l],p=_m(h,t,e,r);u[l]=p}return r.delete(n),u}else throw new Error(`Can't recurse into non-iterable type: ${n}`);else return e.set(n,s.value),s.value}function lj(n,t=GI){return UI(n,t)}function UI(n,t,e=new Set){let r=n[0];if(e.has(r))throw new Error("Circular references are not supported.");let s=t(n);if(s.recurse&&s.value!==null)throw new Error("A deep zip function may not return both a value and recurse=true.");if(s.recurse)if(nc(r)){let u=Array.isArray(r)?[]:{};e.add(r);for(let l in r){let h=n.map(m=>m[l]),p=UI(h,t,e);u[l]=p}return e.delete(r),u}else throw new Error(`Can't recurse into non-iterable type: ${r}`);else return s.value}function GI(n){return n===null?null:nc(n[0])?{value:null,recurse:!0}:{value:n,recurse:!1}}async function HI(n,t){let e=new Map;_m(n,t,e);for(let s of Array.from(e.keys())){let u=e.get(s);if(ni(u)){let l=await u;e.set(s,l)}}let r=_m(n,t,e);return r}function nc(n){return n!=null&&!ArrayBuffer.isView(n)&&(Array.isArray(n)||typeof n=="object"&&!(n instanceof at))}function hj(n){return n==null||fj(n)||Array.isArray(n)||typeof n=="object"&&n instanceof at||Re(n)}function fj(n){return n===null||typeof n!="object"&&typeof n!="function"}function pj(n){return cj(n,dj)}function dj(n){return n instanceof at?{value:n.clone(),recurse:!1}:nc(n)?{value:null,recurse:!0}:{value:n,recurse:!1}}class qI{constructor(t){if(this.capacity=t,this.begin=0,this.end=0,t==null)throw new RangeError("Can't create a ring buffer of unknown capacity.");if(t<1)throw new RangeError("Can't create ring buffer of capacity < 1.");this.data=new Array(t),this.doubledCapacity=2*t}wrap(t){for(;t<0;)t+=this.doubledCapacity;return t%this.doubledCapacity}get(t){if(t<0)throw new RangeError("Can't get item at a negative index.");return this.data[t%this.capacity]}set(t,e){if(t<0)throw new RangeError("Can't set item at a negative index.");this.data[t%this.capacity]=e}length(){let t=this.end-this.begin;return t<0&&(t=this.doubledCapacity+t),t}isFull(){return this.length()===this.capacity}isEmpty(){return this.length()===0}push(t){if(this.isFull())throw new RangeError("Ring buffer is full.");this.set(this.end,t),this.end=this.wrap(this.end+1)}pushAll(t){for(let e of t)this.push(e)}pop(){if(this.isEmpty())throw new RangeError("Ring buffer is empty.");this.end=this.wrap(this.end-1);let t=this.get(this.end);return this.set(this.end,void 0),t}unshift(t){if(this.isFull())throw new RangeError("Ring buffer is full.");this.begin=this.wrap(this.begin-1),this.set(this.begin,t)}shift(){if(this.isEmpty())throw new RangeError("Ring buffer is empty.");let t=this.get(this.begin);return this.set(this.begin,void 0),this.begin=this.wrap(this.begin+1),t}shuffleExcise(t){if(this.isEmpty())throw new RangeError("Ring buffer is empty.");let e=this.wrap(this.begin+t),r=this.get(e);return this.set(e,this.pop()),r}}class Fm extends qI{constructor(){super(Fm.INITIAL_CAPACITY)}isFull(){return!1}push(t){super.isFull()&&this.expand(),super.push(t)}unshift(t){super.isFull()&&this.expand(),super.unshift(t)}expand(){let t=this.capacity*2,e=new Array(t),r=this.length();for(let s=0;s<r;s++)e[s]=this.get(this.wrap(this.begin+s));this.data=e,this.capacity=t,this.doubledCapacity=2*this.capacity,this.begin=0,this.end=r}}Fm.INITIAL_CAPACITY=32;function jI(n){return new gj(n)}function Aft(n){let t=n;return lf(()=>({value:t++,done:!1}))}function lf(n){return new vj(n)}function KI(n,t){return new YI(n,t)}function _ft(n,t,e){return KI(lf(n).take(t),e)}function mj(n,t=Sa.FAIL){return new Nj(n,t)}class Rn{async toArray(){let t=[],e=await this.next();for(;!e.done;)t.push(e.value),e=await this.next();return t}async toArrayForTest(){let t=this.prefetch(100),e=[],r=await t.next();for(;!r.done;)e.push(r.value),r=await t.next();return e}async resolveFully(){let t=await this.next();for(;!t.done;)t=await this.next()}async resolveWhile(t){let e=await this.next(),r=t(e.value);for(;!e.done&&r;)e=await this.next(),r=t(e.value)}handleErrors(t){return new Sj(this,t)}filter(t){return new Tj(this,t)}map(t){return new kj(this,t)}mapAsync(t){return new XI(this,t)}serialMapAsync(t){return new XI(this,t).serial()}flatmap(t){return new Cj(this,t)}async forEachAsync(t){return this.map(t).resolveFully()}async serialForEach(t){return this.serialMapAsync(t).resolveWhile(e=>e===!0)}rowMajorBatch(t,e=!0){return new xj(this,t,e)}columnMajorBatch(t,e=!0,r=GI){let s=this.rowMajorBatch(t,e);return s.map(u=>lj(u,r))}concatenate(t,e){return new YI(jI([this,t]),e)}take(t){return t<0||t==null?this:new wj(this,t)}skip(t){return t<0||t==null?this:new bj(this,t)}prefetch(t){return new JI(this,t)}shuffle(t,e){return new Ij(this,t,e)}serial(){return new yj(this)}}class gj extends Rn{constructor(t){super();this.items=t,this.trav=0}summary(){return`Array of ${this.items.length} items`}async next(){if(this.trav>=this.items.length)return{value:null,done:!0};let t=this.items[this.trav];return this.trav++,{value:pj(t),done:!1}}}class vj extends Rn{constructor(t){super();this.nextFn=t}summary(){return"Function call"}async next(){try{return this.nextFn()}catch(t){throw t.message=`Error thrown while iterating through a dataset: ${t.message}`,t}}}class yj extends Rn{constructor(t){super();this.upstream=t,this.lastRead=Promise.resolve({value:null,done:!1})}summary(){return`${this.upstream.summary()} -> Serial`}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}async serialNext(){return this.upstream.next()}}class bj extends Rn{constructor(t,e){super();this.upstream=t,this.maxCount=e,this.count=0,this.lastRead=Promise.resolve({value:null,done:!1})}summary(){return`${this.upstream.summary()} -> Skip`}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}async serialNext(){for(;this.count++<this.maxCount;){let t=await this.upstream.next();if(t.done)return t;oe(t.value)}return this.upstream.next()}}class wj extends Rn{constructor(t,e){super();this.upstream=t,this.maxCount=e,this.count=0}summary(){return`${this.upstream.summary()} -> Take`}async next(){return this.count++>=this.maxCount?{value:null,done:!0}:this.upstream.next()}}class xj extends Rn{constructor(t,e,r=!0){super();this.upstream=t,this.batchSize=e,this.enableSmallLastBatch=r,this.lastRead=Promise.resolve({value:null,done:!1})}summary(){return`${this.upstream.summary()} -> RowMajorBatch`}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}async serialNext(){let t=[];for(;t.length<this.batchSize;){let e=await this.upstream.next();if(e.done)return this.enableSmallLastBatch&&t.length>0?{value:t,done:!1}:{value:null,done:!0};t.push(e.value)}return{value:t,done:!1}}}class Tj extends Rn{constructor(t,e){super();this.upstream=t,this.predicate=e,this.lastRead=Promise.resolve({value:null,done:!1})}summary(){return`${this.upstream.summary()} -> Filter`}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}async serialNext(){for(;;){let t=await this.upstream.next();if(t.done||this.predicate(t.value))return t;oe(t.value)}}}class kj extends Rn{constructor(t,e){super();this.upstream=t,this.transform=e}summary(){return`${this.upstream.summary()} -> Map`}async next(){let t=await this.upstream.next();if(t.done)return{value:null,done:!0};let e=mo(t.value),r=this.transform(t.value),s=mo(r);for(let u of e)Xp(u,s)||u.dispose();return{value:r,done:!1}}}class Sj extends Rn{constructor(t,e){super();this.upstream=t,this.handler=e,this.count=0,this.lastRead=Promise.resolve({value:null,done:!1})}summary(){return`${this.upstream.summary()} -> handleErrors`}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}async serialNext(){for(;;)try{return await this.upstream.next()}catch(t){if(!this.handler(t))return{value:null,done:!0}}}}class XI extends Rn{constructor(t,e){super();this.upstream=t,this.transform=e}summary(){return`${this.upstream.summary()} -> AsyncMap`}async next(){let t=await this.upstream.next();if(t.done)return{value:null,done:!0};let e=mo(t.value),r=await this.transform(t.value),s=mo(r);for(let u of e)Xp(u,s)||u.dispose();return{value:r,done:!1}}}class G0 extends Rn{constructor(){super();this.outputQueue=new Fm,this.lastRead=Promise.resolve({value:null,done:!1})}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}async serialNext(){for(;this.outputQueue.length()===0;)if(!await this.pump())return{value:null,done:!0};return{value:this.outputQueue.shift(),done:!1}}}class Cj extends G0{constructor(t,e){super();this.upstream=t,this.transform=e}summary(){return`${this.upstream.summary()} -> Flatmap`}async pump(){let t=await this.upstream.next();if(t.done)return!1;let e=mo(t.value),r=this.transform(t.value),s=mo(r);this.outputQueue.pushAll(r);for(let u of e)Xp(u,s)||u.dispose();return!0}}class YI extends Rn{constructor(t,e){super();this.baseErrorHandler=e,this.lastRead=null,this.iterator=null,this.moreIterators=t}summary(){let t="TODO: fill in upstream of chained summaries";return`${t} -> Chained`}async next(){return this.lastRead=this.readFromChain(this.lastRead),this.lastRead}async readFromChain(t){if(await t,this.iterator==null){let r=await this.moreIterators.next();if(r.done)return{value:null,done:!0};this.iterator=r.value,this.baseErrorHandler!=null&&(this.iterator=this.iterator.handleErrors(this.baseErrorHandler))}let e=await this.iterator.next();return e.done?(this.iterator=null,this.readFromChain(t)):e}}var Sa;(function(n){n[n.FAIL=0]="FAIL",n[n.SHORTEST=1]="SHORTEST",n[n.LONGEST=2]="LONGEST"})(Sa||(Sa={}));class Nj extends Rn{constructor(t,e=Sa.FAIL){super();this.iterators=t,this.mismatchMode=e,this.count=0,this.currentPromise=null}summary(){let t="TODO: fill in upstream of zip summaries";return`{${t}} -> Zip`}async nextState(t){await t;let e=0,r=0;function s(l){if(l instanceof Rn){let h=l.next();return{value:h.then(p=>(e++,p.done&&r++,p.value)),recurse:!1}}else return{value:null,recurse:!0}}let u=await HI(this.iterators,s);if(e===r)return{value:null,done:!0};if(r>0)switch(this.mismatchMode){case Sa.FAIL:throw new Error(`Zipped streams should have the same length. Mismatched at element ${this.count}.`);case Sa.SHORTEST:return{value:null,done:!0};case Sa.LONGEST:default:}return this.count++,{value:u,done:!1}}async next(){return this.currentPromise=this.nextState(this.currentPromise),this.currentPromise}}class JI extends Rn{constructor(t,e){super();this.upstream=t,this.bufferSize=e,this.buffer=new qI(e)}summary(){return`${this.upstream.summary()} -> Prefetch`}refill(){for(;!this.buffer.isFull();){let t=this.upstream.next();this.buffer.push(t)}}next(){return this.refill(),this.buffer.shift()}}class Ij extends JI{constructor(t,e,r){super(t,e);this.upstream=t,this.windowSize=e,this.upstreamExhausted=!1,this.random=Lu(r||cr().toString()),this.lastRead=Promise.resolve({value:null,done:!1})}async next(){return this.lastRead=this.lastRead.then(()=>this.serialNext()),this.lastRead}randomInt(t){return Math.floor(this.random()*t)}chooseIndex(){return this.randomInt(this.buffer.length())}async serialNext(){for(this.upstreamExhausted||this.refill();!this.buffer.isEmpty();){let t=this.chooseIndex(),e=await this.buffer.shuffleExcise(t);if(e.done)this.upstreamExhausted=!0;else return this.refill(),e}return{value:null,done:!0}}}class rc{constructor(){this.size=null}batch(t,e=!0){let r=this;k(t>0,()=>`batchSize needs to be positive, but it is
      ${t}`);let s;return this.size===Infinity||this.size==null?s=this.size:e?s=Math.ceil(this.size/t):s=Math.floor(this.size/t),Ar(async()=>(await r.iterator()).columnMajorBatch(t,e,$j),s)}concatenate(t){let e=this,r;return this.size===Infinity||t.size===Infinity?r=Infinity:this.size!=null&&t.size!=null?r=this.size+t.size:r=null,Ar(async()=>(await e.iterator()).concatenate(await t.iterator()),r)}filter(t){let e=this,r;return this.size===Infinity?r=Infinity:r=null,Ar(async()=>(await e.iterator()).filter(s=>ot(()=>t(s))),r)}async forEachAsync(t){return(await this.iterator()).forEachAsync(t)}map(t){let e=this;return Ar(async()=>(await e.iterator()).map(r=>ot(()=>t(r))),this.size)}mapAsync(t){let e=this;return Ar(async()=>(await e.iterator()).mapAsync(t),this.size)}prefetch(t){if(t==null)throw new RangeError("`Dataset.prefetch()` requires bufferSize to be specified.");let e=this;return Ar(async()=>(await e.iterator()).prefetch(t),this.size)}repeat(t){let e=this,r;return this.size!=null&&t>0?r=this.size*t:t===0?r=0:this.size!=null&&(t===void 0||t<0)?r=Infinity:r=null,Ar(async()=>{let s=lf(async()=>({value:await e.iterator(),done:!1}));return KI(s.take(t))},r)}skip(t){let e=this,r;return this.size!=null&&t>=0&&this.size>=t?r=this.size-t:this.size!=null&&(this.size<t||t===void 0||t<0)?r=0:r=null,Ar(async()=>(await e.iterator()).skip(t),r)}shuffle(t,e,r=!0){if(t==null||t<0)throw this.size==null?new RangeError("`Dataset.shuffle()` requires bufferSize to be specified."):new RangeError(`\`Dataset.shuffle()\` requires bufferSize to be specified.  If your data fits in main memory (for regular JS objects), and/or GPU memory (for \`tf.Tensor\`s), consider setting bufferSize to the dataset size (${this.size} elements)`);let s=this,u=Lu(e||cr().toString());return Ar(async()=>{let l=u.int32();return r&&(l+=u.int32()),(await s.iterator()).shuffle(t,l.toString())},this.size)}take(t){let e=this,r;return this.size!=null&&this.size>t?r=t:this.size!=null&&this.size<=t?r=this.size:r=null,Ar(async()=>(await e.iterator()).take(t),r)}async toArray(){if(this.size===Infinity)throw new Error("Can not convert infinite data stream to array.");return(await this.iterator()).toArray()}async toArrayForTest(){if(this.size===Infinity)throw new Error("Can not convert infinite data stream to array.");return(await this.iterator()).toArrayForTest()}}rc.MAX_BUFFER_SIZE=1e4;function Ar(n,t=null){return new class extends rc{constructor(){super(...arguments);this.size=t}async iterator(){return n()}}}function Ej(n){return Ar(async()=>jI(n),n.length)}function Dj(n){if(!nc(n))throw new Error("The argument to zip() must be an object or array.");let t;if(Array.isArray(n))for(let e=0;e<n.length;e++)t=t==null?n[e].size:Math.min(t,n[e].size);else if(n instanceof Object)for(let e in n)t=t==null?n[e].size:Math.min(t,n[e].size);return Ar(async()=>{let e=await HI(n,r=>{if(r instanceof rc)return{value:r.iterator(),recurse:!1};if(nc(r))return{value:null,recurse:!0};throw new Error("Leaves of the structure passed to zip() must be Datasets, not primitives.")});return mj(e,Sa.SHORTEST)},t)}function $j(n){if(n===null)return null;let t=n[0];if(hj(t)){let e=Aj(n);return{value:e,recurse:!1}}return{value:null,recurse:!0}}function Aj(n){if(n.length===0)throw new Error("Can't make a batch of zero elements.");return n[0]instanceof at?mr(n):vn(n)}class ZI extends rc{constructor(t){super();this.input=t}async iterator(){let t=await this.input.iterator(),e=t.decodeUTF8(),r=e.split(`
`).map(s=>(s.endsWith("\r")&&(s=s.slice(0,-1)),s));return r}}let Rm='"',hf=Symbol("out"),QI=Symbol("field"),Pm=Symbol("quote"),H0=Symbol("quoteafterquote"),tE=Symbol("quoteinquote");class eE extends rc{constructor(t,e){super();this.input=t,this.hasHeader=!0,this.fullColumnNames=null,this.columnNamesValidated=!1,this.columnConfigs=null,this.configuredColumnsOnly=!1,this.delimiter=",",this.delimWhitespace=!1,this.base=new ZI(t),e||(e={}),this.hasHeader=!(e.hasHeader===!1),this.fullColumnNames=e.columnNames,this.columnConfigs=e.columnConfigs,this.configuredColumnsOnly=e.configuredColumnsOnly,e.delimWhitespace?(k(e.delimiter==null,()=>"Delimiter should not be provided when delimWhitespace is true."),this.delimWhitespace=!0,this.delimiter=" "):this.delimiter=e.delimiter?e.delimiter:","}async columnNames(){return this.columnNamesValidated||await this.setColumnNames(),this.configuredColumnsOnly?Object.keys(this.columnConfigs):this.fullColumnNames}async setColumnNames(){let t=await this.maybeReadHeaderLine();if(!this.fullColumnNames&&!t)throw new Error("Column names must be provided if there is no header line.");this.fullColumnNames&&t&&k(t.length===this.fullColumnNames.length,()=>"The length of provided columnNames ("+this.fullColumnNames.length.toString()+") does not match the length of the header line read from file ("+t.length.toString()+")."),this.fullColumnNames||(this.fullColumnNames=t);let e=this.fullColumnNames.reduce((s,u)=>(s[u]=s[u]+1||1,s),{}),r=Object.keys(e).filter(s=>e[s]>1);if(k(r.length===0,()=>"Duplicate column names found: "+r.toString()),this.columnConfigs)for(let s of Object.keys(this.columnConfigs)){let u=this.fullColumnNames.indexOf(s);if(u===-1)throw new Error('The key "'+s+'" provided in columnConfigs does not match any of the column names ('+this.fullColumnNames.toString()+").")}this.columnNamesValidated=!0}async maybeReadHeaderLine(){if(this.hasHeader){let t=await this.base.iterator(),e=await t.next();if(e.done)throw new Error("No data was found for CSV parsing.");let r=e.value,s=this.parseRow(r,!1);return s}else return null}async iterator(){this.columnNamesValidated||await this.setColumnNames();let t=await this.base.iterator();return this.hasHeader&&(t=t.skip(1)),t.map(e=>this.makeDataElement(e))}makeDataElement(t){let e=this.parseRow(t),r={},s={};for(let u=0;u<this.fullColumnNames.length;u++){let l=this.fullColumnNames[u],h=this.columnConfigs?this.columnConfigs[l]:null;if(this.configuredColumnsOnly&&!h)continue;{let p=e[u],m=null;if(p==="")if(h&&h.default!==void 0)m=h.default;else{if(h&&(h.required||h.isLabel))throw new Error(`Required column ${l} is empty in this line: ${t}`);m=void 0}else{let y=Number(p);if(isNaN(y))h&&h.dtype==="bool"?m=this.getBoolean(p):m=p;else if(!h||!h.dtype)m=y;else switch(h.dtype){case"float32":m=y;break;case"int32":m=Math.floor(y);break;case"bool":m=this.getBoolean(p);break;default:m=y}}h&&h.isLabel?s[l]=m:r[l]=m}}return Object.keys(s).length===0?r:{xs:r,ys:s}}getBoolean(t){return t==="1"||t.toLowerCase()==="true"?1:0}parseRow(t,e=!0){let r=[],s=0,u=t.length,l=hf;for(let h=0;h<u;h++)switch(l){case hf:switch(t.charAt(h)){case Rm:s=h+1,l=Pm;break;case this.delimiter:if(s=h+1,this.delimiter===" "&&this.delimWhitespace)break;r.push(""),l=hf;break;default:l=QI,s=h;break}break;case QI:switch(t.charAt(h)){case this.delimiter:r.push(t.substring(s,h)),l=hf,s=h+1;break;default:}break;case Pm:switch(t.charAt(h)){case Rm:l=H0;break;default:}break;case H0:switch(t.charAt(h)){case this.delimiter:r.push(t.substring(s,h-1)),l=hf,s=h+1;break;case Rm:l=Pm;break;default:l=tE;break}break;case tE:switch(t.charAt(h)){case Rm:l=Pm;break;default:}break;default:}if(l===H0?r.push(t.substring(s,u-1)):r.push(t.substring(s)),e&&r.length!==this.fullColumnNames.length)throw new Error(`Invalid row in csv file. Should have ${this.fullColumnNames.length} elements in a row, but got ${r}`);return r}}class q0 extends Rn{constructor(t){super();this.microphoneConfig=t,this.isClosed=!1,this.fftSize=t.fftSize||1024;let e=Math.log2(this.fftSize);if(this.fftSize<0||e<4||e>14||!Number.isInteger(e))throw new Error(`Invalid fftSize: it must be a power of 2 between 2 to 4 and 2 to 14, but got ${this.fftSize}`);if(this.numFrames=t.numFramesPerSpectrogram||43,this.sampleRateHz=t.sampleRateHz,this.columnTruncateLength=t.columnTruncateLength||this.fftSize,this.audioTrackConstraints=t.audioTrackConstraints,this.smoothingTimeConstant=t.smoothingTimeConstant||0,this.includeSpectrogram=!(t.includeSpectrogram===!1),this.includeWaveform=t.includeWaveform===!0,!this.includeSpectrogram&&!this.includeWaveform)throw new Error("Both includeSpectrogram and includeWaveform are false. At least one type of data should be returned.")}summary(){return"microphone"}static async create(t={}){if(ft().get("IS_NODE"))throw new Error("microphone API is only supported in browser environment.");let e=new q0(t);return await e.start(),e}async start(){try{this.stream=await navigator.mediaDevices.getUserMedia({audio:this.audioTrackConstraints==null?!0:this.audioTrackConstraints,video:!1})}catch(r){throw new Error(`Error thrown while initializing video stream: ${r.message}`)}if(!this.stream)throw new Error("Could not obtain audio from microphone.");let t=window.AudioContext||window.webkitAudioContext;if(this.audioContext=new t,!this.sampleRateHz)this.sampleRateHz=this.audioContext.sampleRate;else if(this.audioContext.sampleRate!==this.sampleRateHz)throw new Error(`Mismatch in sampling rate: Expected: ${this.sampleRateHz}; Actual: ${this.audioContext.sampleRate}`);let e=this.audioContext.createMediaStreamSource(this.stream);this.analyser=this.audioContext.createAnalyser(),this.analyser.fftSize=this.fftSize*2,this.analyser.smoothingTimeConstant=this.smoothingTimeConstant,e.connect(this.analyser),this.freqData=new Float32Array(this.fftSize),this.timeData=new Float32Array(this.fftSize);return}async next(){if(this.isClosed)return{value:null,done:!0};let t,e,r=await this.getAudioData();if(this.includeSpectrogram){let s=this.flattenQueue(r.freqDataQueue);t=this.getTensorFromAudioDataArray(s,[this.numFrames,this.columnTruncateLength,1])}if(this.includeWaveform){let s=this.flattenQueue(r.timeDataQueue);e=this.getTensorFromAudioDataArray(s,[this.numFrames*this.fftSize,1])}return{value:{spectrogram:t,waveform:e},done:!1}}async capture(){return(await this.next()).value}async getAudioData(){let t=[],e=[],r=0;return new Promise(s=>{let u=setInterval(()=>{this.includeSpectrogram&&(this.analyser.getFloatFrequencyData(this.freqData),this.freqData[0]===-Infinity&&s({freqDataQueue:t,timeDataQueue:e}),t.push(this.freqData.slice(0,this.columnTruncateLength))),this.includeWaveform&&(this.analyser.getFloatTimeDomainData(this.timeData),e.push(this.timeData.slice())),++r===this.numFrames&&(clearInterval(u),s({freqDataQueue:t,timeDataQueue:e}))},this.fftSize/this.sampleRateHz*1e3)})}stop(){this.isClosed||(this.isClosed=!0,this.analyser.disconnect(),this.audioContext.close(),this.stream!=null&&this.stream.getTracks().length>0&&this.stream.getTracks()[0].stop())}toArray(){throw new Error("Can not convert infinite audio stream to array.")}getSampleRate(){return this.sampleRateHz}flattenQueue(t){let e=t[0].length,r=new Float32Array(t.length*e);return t.forEach((s,u)=>r.set(s,u*e)),r}getTensorFromAudioDataArray(t,e){let r=new Float32Array(O(e));return r.set(t,r.length-t.length),vn(r,e)}}class j0 extends Rn{constructor(t,e){super();if(this.webcamVideoElement=t,this.webcamConfig=e,this.isClosed=!0,this.resize=!1,this.needToResize())if(this.resize=!0,this.cropSize=[this.webcamConfig.resizeHeight,this.webcamConfig.resizeWidth],this.cropBoxInd=Ir([0],"int32"),this.webcamConfig.centerCrop){let r=this.webcamConfig.resizeWidth*1/this.webcamVideoElement.width,s=this.webcamConfig.resizeHeight*1/this.webcamVideoElement.height,u=(1-r)/2,l=(1-s)/2,h=u+r,p=s+l;this.cropBox=pa([l,u,p,h],[1,4])}else this.cropBox=pa([0,0,1,1],[1,4])}summary(){return"webcam"}static async create(t,e={}){if(ft().get("IS_NODE"))throw new Error("tf.data.webcam is only supported in browser environment.");if(!t){if(t=document.createElement("video"),!e.resizeWidth||!e.resizeHeight)throw new Error("Please provide webcam video element, or resizeWidth and resizeHeight to create a hidden video element.");t.width=e.resizeWidth,t.height=e.resizeHeight}let r=new j0(t,e);return await r.start(),r}async start(){this.webcamConfig.facingMode&&k(this.webcamConfig.facingMode==="user"||this.webcamConfig.facingMode==="environment",()=>`Invalid webcam facing mode: ${this.webcamConfig.facingMode}. Please provide 'user' or 'environment'`);try{this.stream=await navigator.mediaDevices.getUserMedia({video:{deviceId:this.webcamConfig.deviceId,facingMode:this.webcamConfig.facingMode?this.webcamConfig.facingMode:"user",width:this.webcamVideoElement.width,height:this.webcamVideoElement.height}})}catch(t){throw t.message=`Error thrown while initializing video stream: ${t.message}`,t}if(!this.stream)throw new Error("Could not obtain video from webcam.");try{this.webcamVideoElement.srcObject=this.stream}catch(t){console.log(t),this.webcamVideoElement.src=window.URL.createObjectURL(this.stream)}return this.webcamVideoElement.play(),this.isClosed=!1,new Promise(t=>{this.webcamVideoElement.onloadedmetadata=()=>{t()}})}async next(){if(this.isClosed)return{value:null,done:!0};let t;try{t=kS(this.webcamVideoElement)}catch(e){throw new Error(`Error thrown converting video to pixels: ${JSON.stringify(e)}`)}if(this.resize)try{return{value:this.cropAndResizeFrame(t),done:!1}}catch(e){throw new Error(`Error thrown cropping the video: ${e.message}`)}finally{t.dispose()}else return{value:t,done:!1}}needToResize(){return!!(this.webcamConfig.resizeWidth&&this.webcamConfig.resizeHeight&&(this.webcamVideoElement.width!==this.webcamConfig.resizeWidth||this.webcamVideoElement.height!==this.webcamConfig.resizeHeight))}cropAndResizeFrame(t){return ot(()=>{let e=t.toFloat().expandDims(0),r;r=da.cropAndResize(e,this.cropBox,this.cropBoxInd,this.cropSize,"bilinear");let s=r.shape;return r.reshape(s.slice(1))})}async capture(){return(await this.next()).value}stop(){let t=this.stream.getTracks();t.forEach(e=>e.stop());try{this.webcamVideoElement.srcObject=null}catch(e){console.log(e),this.webcamVideoElement.src=null}this.isClosed=!0}toArray(){throw new Error("Can not convert infinite video stream to array.")}}class nE{}class rE extends Rn{split(t){return new _j(this,t)}}class _j extends rE{constructor(t,e){super();this.upstream=t,this.impl=new Fj(t,e)}summary(){return this.impl.summary()}async next(){return this.impl.next()}}class Fj extends G0{constructor(t,e){super();this.upstream=t,this.separator=e,this.carryover=""}summary(){return`${this.upstream.summary()} -> Split('${this.separator}')`}async pump(){let t=await this.upstream.next();if(t.done)return this.carryover===""?!1:(this.outputQueue.push(this.carryover),this.carryover="",!0);let e=t.value.split(this.separator);e[0]=this.carryover+e[0];for(let r of e.slice(0,-1))this.outputQueue.push(r);return this.carryover=e[e.length-1],!0}}class Rj extends Rn{decodeUTF8(){return new Pj(this)}}class Pj extends rE{constructor(t){super();this.upstream=t,this.impl=new Oj(t)}summary(){return this.impl.summary()}async next(){return this.impl.next()}}class Oj extends G0{constructor(t){super();if(this.upstream=t,ft().get("IS_BROWSER"))this.decoder=new TextDecoder("utf-8");else{let{StringDecoder:e}=require("string_decoder");this.decoder=new e("utf8")}}summary(){return`${this.upstream.summary()} -> Utf8`}async pump(){let t=await this.upstream.next(),e;if(t.done)return!1;e=t.value;let r;return ft().get("IS_BROWSER")?r=this.decoder.decode(e,{stream:!0}):r=this.decoder.write(Buffer.from(e.buffer)),this.outputQueue.push(r),!0}}class sE extends Rj{constructor(t,e={}){super();this.file=t,this.options=e,k(t instanceof Uint8Array||(ft().get("IS_BROWSER")?t instanceof File||t instanceof Blob:!1),()=>"FileChunkIterator only supports File, Blob and Uint8Array right now."),this.offset=e.offset||0,this.chunkSize=e.chunkSize||1024*1024}summary(){return`FileChunks ${this.file}`}async next(){if(this.offset>=(this.file instanceof Uint8Array?this.file.byteLength:this.file.size))return{value:null,done:!0};let t=new Promise((e,r)=>{let s=this.offset+this.chunkSize;if(this.file instanceof Uint8Array)e(new Uint8Array(this.file.slice(this.offset,s)));else{let u=new FileReader;u.onload=h=>{let p=u.result;if(p instanceof ArrayBuffer&&(p=new Uint8Array(p)),!(p instanceof Uint8Array))return r(new TypeError("FileReader returned unknown type."));e(p)},u.onabort=h=>r(new Error("Aborted")),u.onerror=h=>r(new Error(h.type));let l=this.file.slice(this.offset,s);u.readAsArrayBuffer(l)}this.offset=s});return{value:await t,done:!1}}}async function Mj(n,t={}){let e,r;typeof n=="string"?e=n:(e=n.url,r=Lj(n));let s=await X2(e,r);if(s.ok){let u=new Uint8Array(await s.arrayBuffer());return new sE(u,t)}else throw new Error(s.statusText)}let Lj=n=>{let t={method:n.method,headers:n.headers,body:n.body,mode:n.mode,credentials:n.credentials,cache:n.cache,redirect:n.redirect,referrer:n.referrer,integrity:n.integrity};return t};function oE(n){return typeof n=="string"&&n.substr(0,7)==="file://"}class aE extends nE{constructor(t,e={}){super();this.input=t,this.options=e}async iterator(){if(oE(this.input)&&ft().get("IS_NODE")){let t=require("fs");this.input=t.readFileSync(this.input.substr(7))}return new sE(this.input,this.options)}}class iE extends nE{constructor(t,e={}){super();this.url=t,this.fileOptions=e}async iterator(){return oE(this.url)?new aE(this.url,this.fileOptions).iterator():Mj(this.url,this.fileOptions)}}function Bj(n,t={}){return new eE(new iE(n),t)}function zj(n){let t=lf(n);return Ar(async()=>t)}function Wj(n){return Ar(async()=>{let t=await n();return lf(()=>t.next())})}async function Vj(n,t){return j0.create(n,t)}async function Uj(n){return q0.create(n)}let uE="2.7.0";var Gj=Object.freeze({__proto__:null,array:Ej,Dataset:rc,zip:Dj,CSVDataset:eE,TextLineDataset:ZI,csv:Bj,func:zj,generator:Wj,microphone:Uj,webcam:Vj,FileDataSource:aE,URLDataSource:iE,version_data:uE});function At(n,t){Array.isArray(n)||(n=[n]),n.forEach(e=>{e!=null&&k(e.dtype!=="complex64",()=>`${t} does not support complex64 tensors in the CPU backend.`)})}let Hj=Vd,qj=Xb,jj=Yb,Kj=Jb,Xj=Pd;class Yj extends f{constructor(){super();this.blockSize=48,this.firstUse=!0,this.data=new c(this,yo())}write(t,e,r){this.firstUse&&(this.firstUse=!1,ft().get("IS_NODE")&&Gu(`
============================
Hi there \u{1F44B}. Looks like you are running TensorFlow.js in Node.js. To speed things up dramatically, install our node backend, which binds to TensorFlow C++, by running npm i @tensorflow/tfjs-node, or npm i @tensorflow/tfjs-node-gpu if you have CUDA. Then call require('@tensorflow/tfjs-node'); (-gpu suffix for CUDA) at the start of your program. Visit https://github.com/tensorflow/tfjs-node for more details.
============================`));let s={};return this.data.set(s,{values:t,dtype:r,refCount:1}),s}makeTensorInfo(t,e,r){let s;if(e==="string"&&r!=null&&r.length>0&&dn(r[0])){let u=r.map(l=>qp(l));s=this.write(u,t,e)}else s=this.write(r,t,e);return{dataId:s,shape:t,dtype:e}}incRef(t){let e=this.data.get(t);e.refCount++}decRef(t){if(this.data.has(t)){let e=this.data.get(t);e.refCount--}}move(t,e,r,s){this.data.set(t,{values:e,dtype:s,refCount:1})}numDataIds(){return this.data.numDataIds()}async read(t){return this.readSync(t)}readSync(t){let{dtype:e,complexTensorInfos:r}=this.data.get(t);if(e==="complex64"){let s=this.readSync(r.real.dataId),u=this.readSync(r.imag.dataId);return So(s,u)}return this.data.get(t).values}bufferSync(t){let e=this.readSync(t.dataId),r=e;if(t.dtype==="string")try{r=e.map(s=>rh(s))}catch(s){throw new Error("Failed to decode encoded string bytes into utf-8")}return Ae(t.shape,t.dtype,r)}makeOutput(t,e,r){let s=this.write(t,e,r);return yo().makeTensorFromDataId(s,e,r,this)}disposeData(t){if(this.data.has(t)){let{complexTensorInfos:e}=this.data.get(t);e!=null&&(this.disposeData(e.real.dataId),this.disposeData(e.imag.dataId)),this.data.delete(t)}}disposeIntermediateTensorInfo(t){let e=t.dataId;if(this.data.has(e)){let r=this.data.get(e);r.refCount--,r.refCount<1&&this.disposeData(e)}}async time(t){let e=cr();t();let r=cr()-e;return{kernelMs:r}}memory(){return{unreliable:!0,reasons:["The reported memory is an upper bound. 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At([t,e],"atan2"),this.broadcastedBinaryOp(t,e,t.dtype,(r,s)=>Math.atan2(r,s))}tile(t,e){return At(t,"tile"),jj(this.bufferSync(t),e)}gather(t,e,r){At([t,e],"gather");let s=t.shape.slice(),u=this.readSync(e.dataId);s[r]=u.length;let l=Ae(s,t.dtype),h=this.bufferSync(t);for(let p=0;p<l.size;++p){let m=l.indexToLoc(p),y=m.slice();y[r]=u[m[r]];let b=h.locToIndex(y);l.values[p]=h.values[b]}return l.toTensor()}batchToSpaceND(t,e,r){At([t],"batchToSpaceND");let s=e.reduce((y,b)=>y*b),u=Mh(t.shape,e,s),l=Lh(u.length,e.length),h=Bh(t.shape,e,s),p=Lb(r,e.length),m=Bb(h,r,e.length);return re(t.reshape(u),l).reshape(h).slice(p,m)}pool3d(t,e,r){At(t,"pool3d");let s=e.strideDepth,u=e.strideHeight,l=e.strideWidth,h=e.dilationDepth,p=e.dilationHeight,m=e.dilationWidth,y=e.effectiveFilterDepth,b=e.effectiveFilterHeight,x=e.effectiveFilterWidth,S=e.padInfo.front,C=e.padInfo.top,I=e.padInfo.left,D=r==="max"?Number.NEGATIVE_INFINITY:Number.POSITIVE_INFINITY,R=this.readSync(t.dataId),A=Ae(e.outShape,t.dtype),L=A.values,_=e.outShape[1]*e.outShape[2]*e.outShape[3]*e.outShape[4],B=e.outShape[2]*e.outShape[3]*e.outShape[4],V=e.outShape[3]*e.outShape[4],q=e.outShape[4];for(let j=0;j<e.batchSize;++j){let et=j*_,tt=j*t.strides[0];for(let ht=0;ht<e.inChannels;++ht)for(let gt=0;gt<e.outDepth;++gt){let vt=gt*s-S,bt=vt;for(;bt<0;)bt+=h;let yt=Math.min(e.inDepth,y+vt),mt=et+gt*B;for(let xt=0;xt<e.outHeight;++xt){let wt=xt*u-C,Tt=wt;for(;Tt<0;)Tt+=p;let Dt=Math.min(e.inHeight,b+wt),$t=mt+xt*V;for(let Lt=0;Lt<e.outWidth;++Lt){let Pt=Lt*l-I,Ft=Pt;for(;Ft<0;)Ft+=m;let Vt=Math.min(e.inWidth,x+Pt),ee=$t+Lt*q,pe=D,we=0,de=0;for(let be=bt;be<yt;be+=h){let 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xt=0;xt<p;xt++){let wt=m[vt+xt],Tt=m[bt+xt],Dt=m[yt+xt],$t=m[mt+xt],Lt=wt+(Dt-wt)*ht,Pt=Tt+($t-Tt)*ht,Ft=Lt+(Pt-Lt)*_;y[S++]=Ft}}}return vn(y,[u,e,r,p])}resizeBilinearBackprop(t,e,r){At([t,e],"resizeBilinearBackprop");let[s,u,l,h]=e.shape,[,p,m]=t.shape,y=new Float32Array(s*u*l*h),b=[r&&p>1?u-1:u,r&&m>1?l-1:l],x=[r&&p>1?p-1:p,r&&m>1?m-1:m],S=b[0]/x[0],C=b[1]/x[1],I=this.readSync(t.dataId),D=0;for(let R=0;R<s;R++){let A=R*e.strides[0];for(let L=0;L<p;L++){let _=L*S,B=Math.floor(_),V=Math.min(Math.ceil(_),u-1),q=A+B*e.strides[1],j=A+V*e.strides[1],et=_-B,tt=1-et;for(let ht=0;ht<m;ht++){let gt=ht*C,vt=Math.floor(gt),bt=Math.min(Math.ceil(gt),l-1),yt=gt-vt,mt=1-yt,xt=q+vt*e.strides[2],wt=q+bt*e.strides[2],Tt=j+vt*e.strides[2],Dt=j+bt*e.strides[2],$t=tt*mt,Lt=tt*yt,Pt=et*mt,Ft=et*yt;for(let Vt=0;Vt<h;Vt++){let ee=I[D++];y[xt+Vt]+=ee*$t,y[wt+Vt]+=ee*Lt,y[Tt+Vt]+=ee*Pt,y[Dt+Vt]+=ee*Ft}}}}return Wu(y,[s,l,u,h],e.dtype)}resizeNearestNeighbor(t,e,r,s){At(t,"resizeNearestNeighbor");let[u,l,h,p]=t.shape,m=this.readSync(t.dataId),y=new Float32Array(u*e*r*p),b=[s&&e>1?l-1:l,s&&r>1?h-1:h],x=[s&&e>1?e-1:e,s&&r>1?r-1:r],S=b[0]/x[0],C=b[1]/x[1],I=0;for(let D=0;D<u;D++){let R=D*t.strides[0];for(let A=0;A<e;A++){let L=S*A,_=Math.min(l-1,s?Math.round(L):Math.floor(L)),B=R+_*t.strides[1];for(let V=0;V<r;V++){let q=C*V,j=Math.min(h-1,s?Math.round(q):Math.floor(q)),et=B+j*t.strides[2];for(let tt=0;tt<p;tt++){let ht=m[et+tt];y[I++]=ht}}}}return vn(y,[u,e,r,p],t.dtype)}resizeNearestNeighborBackprop(t,e,r){At([t,e],"resizeNearestNeighborBackprop");let[s,u,l,h]=e.shape,[,p,m]=t.shape,y=new Float32Array(s*u*l*h),b=this.readSync(t.dataId),x=[r&&p>1?u-1:u,r&&m>1?l-1:l],S=[r&&p>1?p-1:p,r&&m>1?m-1:m],C=x[0]/S[0],I=x[1]/S[1],D=1/C,R=1/I,A=Math.ceil(D)*2+2,L=Math.ceil(R)*2+2;for(let _=0;_<s;_++){let B=_*e.strides[0];for(let V=0;V<u;V++){let q=B+V*e.strides[1],j=Math.floor(V*D),et=Math.floor(j-A/2);for(let tt=0;tt<l;tt++){let ht=q+tt*e.strides[2],gt=Math.floor(tt*R),vt=Math.floor(gt-L/2);for(let bt=0;bt<h;bt++){let yt=0;for(let mt=0;mt<A;mt++){let xt=mt+et;if(xt<0||xt>=p)continue;let wt=B+xt*t.strides[1],Tt=xt*C,Dt=Math.min(u-1,r?Math.round(Tt):Math.floor(Tt));if(V!==Dt)continue;for(let $t=0;$t<L;$t++){let Lt=$t+vt;if(Lt<0||Lt>=m)continue;let Pt=wt+Lt*t.strides[2],Ft=Lt*I,Vt=Math.min(l-1,r?Math.round(Ft):Math.floor(Ft));tt===Vt&&(yt+=b[Pt+bt])}}y[ht+bt]=yt}}}}return Wu(y,e.shape,e.dtype)}localResponseNormalization4D(t,e,r,s,u){At(t,"localResponseNormalization4D");let l=t.shape[3],h=l-1,p=this.readSync(t.dataId),m=t.size,y=new Float32Array(m);function b(x){let S=x%l,C=x-S+Math.max(0,S-e),I=x-S+Math.min(S+e,h),D=0;for(;C<=I;C++){let R=p[C];D+=R*R}return D}for(let x=0;x<m;x++){let S=b(x),C=p[x]*Math.pow(r+s*S,-u);y[x]=C}return Wu(y,t.shape)}LRNGrad(t,e,r,s,u,l,h){At(t,"LRNGrad");let p=t.shape[3],m=this.readSync(t.dataId),y=this.readSync(e.dataId),b=this.readSync(r.dataId),x=new Float32Array(t.size),S=t.size;for(let C=0;C<S;C++){let I=C%p,D=C-I+Math.max(0,I-s),R=C-I+Math.min(p,I+s+1),A=0;for(let L=D;L<R;L++)A+=Math.pow(y[L],2);A=l*A+u;for(let L=D;L<R;L++){let _=-2*l*h*y[L]*b[C]/A;C===L&&(_+=Math.pow(A,-h)),_*=m[C],x[L]+=_}}return Wu(x,t.shape)}multinomial(t,e,r,s){At(t,"multinomial");let u=e?t:bi(t),l=u.shape[0],h=u.shape[1],p=Se([l,r],"int32"),m=this.readSync(p.dataId),y=this.readSync(u.dataId);for(let b=0;b<l;++b){let x=b*h,S=new Float32Array(h-1);S[0]=y[x];for(let D=1;D<S.length;++D)S[D]=S[D-1]+y[x+D];let C=Lu(s.toString()),I=b*r;for(let D=0;D<r;++D){let R=C();m[I+D]=S.length;for(let A=0;A<S.length;A++)if(R<S[A]){m[I+D]=A;break}}}return p}oneHot(t,e,r,s){At(t,"oneHot");let u=new Float32Array(t.size*e);u.fill(s);let l=this.readSync(t.dataId);for(let h=0;h<t.size;++h)l[h]>=0&&l[h]<e&&(u[h*e+l[h]]=r);return pa(u,[t.size,e],"int32")}nonMaxSuppression(t,e,r,s,u){At(t,"nonMaxSuppression");let l=this.readSync(t.dataId),h=this.readSync(e.dataId);return Hj(l,h,r,s,u)}depthToSpace(t,e,r){k(r==="NHWC",()=>`Only NHWC dataFormat supported on CPU for depthToSpace. Got ${r}`),k(e>1,()=>`blockSize should be > 1 for depthToSpace, but was: ${e}`);let s=t.shape[0],u=t.shape[1],l=t.shape[2],h=t.shape[3],p=u*e,m=l*e,y=h/(e*e),b=this.readSync(t.dataId),x=new Float32Array(s*p*m*y),S=0;for(let C=0;C<s;++C)for(let I=0;I<p;++I){let D=Math.floor(I/e),R=I%e;for(let A=0;A<m;++A){let L=Math.floor(A/e),_=A%e,B=(R*e+_)*y;for(let V=0;V<y;++V){let q=V+B,j=q+h*(L+l*(D+u*C));x[S++]=b[j]}}}return Wu(x,[s,p,m,y])}broadcastedBinaryOp(t,e,r,s){let u=ve(t.shape,e.shape),l=Ae(u,r),h=this.readSync(t.dataId),p=this.readSync(e.dataId),m=di(t.shape,u),y=di(e.shape,u),b=l.values;if(m.length+y.length===0)for(let x=0;x<b.length;++x)b[x]=s(h[x%h.length],p[x%p.length]);else{let x=this.bufferSync(t),S=this.bufferSync(e);for(let C=0;C<b.length;++C){let I=l.indexToLoc(C),D=I.slice(-t.rank);m.forEach(_=>D[_]=0);let R=x.locToIndex(D),A=I.slice(-e.rank);y.forEach(_=>A[_]=0);let L=S.locToIndex(A);b[C]=s(h[R],p[L])}}return l.toTensor()}split(t,e,r){return qj(t,e,r)}dispose(){}floatPrecision(){return 32}epsilon(){return super.epsilon()}cropAndResize(t,e,r,s,u,l){let[h,p,m,y]=t.shape,b=e.shape[0],[x,S]=s,C=Ae([b,x,S,y],"float32"),I=this.readSync(e.dataId),D=this.readSync(r.dataId),R=this.readSync(t.dataId),A=t.strides,L=C.strides;for(let _=0;_<b;_++){let B=_*4,V=I[B],q=I[B+1],j=I[B+2],et=I[B+3],tt=D[_];if(tt>=h)continue;let ht=x>1?(j-V)*(p-1)/(x-1):0,gt=S>1?(et-q)*(m-1)/(S-1):0;for(let vt=0;vt<x;vt++){let bt=x>1?V*(p-1)+vt*ht:.5*(V+j)*(p-1);if(bt<0||bt>p-1){for(let yt=0;yt<S;yt++)for(let mt=0;mt<y;mt++){let xt=mt+yt*L[2]+vt*L[1]+_*L[0];C.values[xt]=l}continue}if(u==="bilinear"){let yt=Math.floor(bt),mt=Math.ceil(bt),xt=bt-yt;for(let wt=0;wt<S;wt++){let Tt=S>1?q*(m-1)+wt*gt:.5*(q+et)*(m-1);if(Tt<0||Tt>m-1){for(let Pt=0;Pt<y;Pt++){let Ft=Pt+wt*L[2]+vt*L[1]+_*L[0];C.values[Ft]=l}continue}let Dt=Math.floor(Tt),$t=Math.ceil(Tt),Lt=Tt-Dt;for(let Pt=0;Pt<y;Pt++){let Ft=Pt+Dt*A[2]+yt*A[1]+tt*A[0],Vt=R[Ft];Ft=Pt+$t*A[2]+yt*A[1]+tt*A[0];let ee=R[Ft];Ft=Pt+Dt*A[2]+mt*A[1]+tt*A[0];let pe=R[Ft];Ft=Pt+$t*A[2]+mt*A[1]+tt*A[0];let we=R[Ft],de=Vt+(ee-Vt)*Lt,Ie=pe+(we-pe)*Lt;Ft=Pt+wt*L[2]+vt*L[1]+_*L[0],C.values[Ft]=de+(Ie-de)*xt}}}else for(let yt=0;yt<S;++yt){let mt=S>1?q*(m-1)+yt*gt:.5*(q+et)*(m-1);if(mt<0||mt>m-1){for(let Tt=0;Tt<y;Tt++){let Dt=Tt+yt*L[2]+vt*L[1]+_*L[0];C.values[Dt]=l}continue}let xt=Math.round(mt),wt=Math.round(bt);for(let Tt=0;Tt<y;Tt++){let Dt=Tt+xt*A[2]+wt*A[1]+tt*A[0],$t=Tt+yt*L[2]+vt*L[1]+_*L[0];C.values[$t]=R[Dt]}}}}return C.toTensor()}sparseToDense(t,e,r,s){let{sliceRank:u,numUpdates:l,sliceSize:h,strides:p,outputSize:m}=Iu(e,t,r),y=!1;return this.scatter(t,e,r,m,h,l,u,p,s,y)}gatherND(t,e){let r=e.shape,s=r[r.length-1],[u,l,h,p]=nd(t,e);if(l===0)return vn([],u,t.dtype);let m=new bn([l,h],t.dtype),y=this.readSync(e.dataId),b=this.readSync(t.dataId);for(let x=0;x<l;x++){let S=[],C=0;for(let I=0;I<s;I++){let D=y[x*s+I];C+=D*p[I],S.push(D)}if(C<0||C>=t.size/h)throw new Error(`Invalid indices: ${S} does not 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de=Lt+we*vt,Ie=we*x.strideWidth-R;for(let be=0;be<C;++be){let Je=Ie+be*D;if(Je<0||Je>=x.inWidth)continue;let ln=ee+be*V[1],hn=pe+Je*et,Me=ln;for(let Ze=0;Ze<x.inChannels;++Ze){let Ve=yt[hn+Ze*tt];for(let Un=0;Un<x.outChannels;++Un)xt[de+Un*bt]+=Ve*mt[Me+Un];Me+=x.outChannels}}}}}}return e.makeTensorInfo(_.shape,_.dtype,xt)}let oK={kernelName:gp,backendName:"cpu",kernelFunc:_E};function aK(n){let{inputs:t,backend:e,attrs:r}=n,{x:s,dy:u}=t,{strides:l,pad:h,dataFormat:p,dimRoundingMode:m,filterShape:y}=r;At([s,u],"conv2dBackpropFilter");let b=ua(p),x=Kn(s.shape,y,l,1,h,m,!1,b),{strideHeight:S,strideWidth:C,filterHeight:I,filterWidth:D}=x,R=x.dataFormat==="channelsLast",A=new bn(x.filterShape,"float32"),L=x.padInfo.left,_=x.padInfo.top,B=e.data.get(s.dataId).values,V=e.data.get(u.dataId).values,q=new bn(s.shape,s.dtype,B),j=new bn(u.shape,u.dtype,V);for(let et=0;et<I;++et){let tt=Math.max(0,Math.ceil((_-et)/S)),ht=Math.min(x.outHeight,(x.inHeight+_-et)/S);for(let gt=0;gt<D;++gt){let vt=Math.max(0,Math.ceil((L-gt)/C)),bt=Math.min(x.outWidth,(x.inWidth+L-gt)/C);for(let yt=0;yt<x.inChannels;++yt)for(let mt=0;mt<x.outChannels;++mt){let xt=0;for(let wt=0;wt<x.batchSize;++wt)for(let Tt=tt;Tt<ht;++Tt){let Dt=et+Tt*S-_;for(let $t=vt;$t<bt;++$t){let Lt=gt+$t*C-L;R?xt+=q.get(wt,Dt,Lt,yt)*j.get(wt,Tt,$t,mt):xt+=q.get(wt,yt,Dt,Lt)*j.get(wt,mt,Tt,$t)}}A.set(xt,et,gt,yt,mt)}}}return e.makeTensorInfo(A.shape,A.dtype,A.values)}let iK={kernelName:Ov,backendName:"cpu",kernelFunc:aK};function uK(n){let{inputs:t,backend:e,attrs:r}=n,{dy:s,filter:u}=t,{inputShape:l,strides:h,pad:p,dataFormat:m,dimRoundingMode:y}=r;At([s,u],"conv2dBackpropInput");let b=Jt(u.shape),x=Jt(s.shape),S=ua(m),C=Kn(l,u.shape,h,1,p,y,!1,S),I=new bn(C.inShape,"float32"),D=I.values,R=e.data.get(s.dataId).values,A=e.data.get(u.dataId).values,[L,_,B]=b,{batchSize:V,filterHeight:q,filterWidth:j,inChannels:et,inHeight:tt,inWidth:ht,outChannels:gt,outHeight:vt,outWidth:bt,strideHeight:yt,strideWidth:mt}=C;S=C.dataFormat;let xt=q-1-C.padInfo.top,wt=j-1-C.padInfo.left,Tt=S==="channelsLast",Dt=I.strides[0],$t=Tt?I.strides[1]:I.strides[2],Lt=Tt?I.strides[2]:1,Pt=Tt?1:I.strides[1],Ft=x[0],Vt=Tt?x[1]:x[2],ee=Tt?x[2]:1,pe=Tt?1:x[1];for(let we=0;we<V;++we)for(let de=0;de<et;++de)for(let Ie=0;Ie<tt;++Ie){let be=Ie-xt,Je=Math.max(0,Math.ceil(be/yt)),ln=Math.min(vt,(q+be)/yt);for(let hn=0;hn<ht;++hn){let Me=hn-wt,Ze=Math.max(0,Math.ceil(Me/mt)),Ve=Math.min(bt,(j+Me)/mt),Un=0;for(let Gn=Je;Gn<ln;++Gn){let $s=Gn*yt-be;for(let qr=Ze;qr<Ve;++qr){let _i=qr*mt-Me,As=Ft*we+Vt*Gn+ee*qr,no=L*(q-1-$s)+_*(j-1-_i)+B*de;for(let Ia=0;Ia<gt;++Ia){let Ea=R[As+pe*Ia],Da=A[no+Ia];Un+=Ea*Da}}}let Po=Dt*we+$t*Ie+Lt*hn+Pt*de;D[Po]=Un}}return e.makeTensorInfo(I.shape,I.dtype,I.values)}let cK={kernelName:vp,backendName:"cpu",kernelFunc:uK};function lK(n){let{inputs:t,backend:e,attrs:r}=n,{x:s,filter:u}=t,{strides:l,pad:h,dilations:p}=r;At([s,u],"conv3d");let m=aa(s.shape,u.shape,l,p,h),{filterDepth:y,filterHeight:b,filterWidth:x,dilationDepth:S,dilationHeight:C,dilationWidth:I,padInfo:D}=m,R=D.front,A=D.left,L=D.top,_=new bn(m.outShape,s.dtype),B=e.data.get(s.dataId).values,V=e.data.get(u.dataId).values,q=_.values,j=Jt(s.shape),et=Jt(u.shape);for(let tt=0;tt<m.batchSize;++tt){let ht=tt*j[0],gt=tt*_.strides[0];for(let vt=0;vt<m.outDepth;++vt){let bt=gt+vt*_.strides[1],yt=vt*m.strideDepth-R;for(let mt=0;mt<y;++mt){let xt=yt+mt*S;if(xt<0||xt>=m.inDepth)continue;let wt=mt*et[0],Tt=ht+xt*j[1];for(let Dt=0;Dt<m.outHeight;++Dt){let $t=bt+Dt*_.strides[2],Lt=Dt*m.strideHeight-L;for(let Pt=0;Pt<b;++Pt){let Ft=Lt+Pt*C;if(Ft<0||Ft>=m.inHeight)continue;let Vt=wt+Pt*et[1],ee=Tt+Ft*j[2];for(let pe=0;pe<m.outWidth;++pe){let we=$t+pe*m.outChannels,de=pe*m.strideWidth-A;for(let Ie=0;Ie<x;++Ie){let be=de+Ie*I;if(be<0||be>=m.inWidth)continue;let Je=Vt+Ie*et[2],ln=ee+be*m.inChannels,hn=Je;for(let Me=0;Me<m.inChannels;++Me){let Ze=B[ln+Me];for(let Ve=0;Ve<m.outChannels;++Ve)q[we+Ve]+=Ze*V[hn+Ve];hn+=m.outChannels}}}}}}}}return e.makeTensorInfo(_.shape,_.dtype,_.values)}let hK={kernelName:yp,backendName:"cpu",kernelFunc:lK};function fK(n){let{inputs:t,backend:e,attrs:r}=n,{x:s,dy:u}=t,{strides:l,pad:h,filterShape:p}=r;At([s,u],"conv3dBackpropFilterV2");let m=Jt(s.shape),y=Jt(u.shape),b=aa(s.shape,p,l,1,h),x=b.strideDepth,S=b.strideHeight,C=b.strideWidth,I=b.filterDepth,D=b.filterHeight,R=b.filterWidth,A=new bn(b.filterShape,"float32"),L=A.values,[_,B,V,q]=A.strides,j=e.data.get(u.dataId).values,[et,tt,ht,gt]=y,vt=e.data.get(s.dataId).values,[bt,yt,mt,xt]=m,wt=b.padInfo.front,Tt=b.padInfo.left,Dt=b.padInfo.top;for(let $t=0;$t<I;++$t){let Lt=Math.max(0,Math.ceil((wt-$t)/x)),Pt=Math.min(b.outDepth,(b.inDepth+wt-$t)/x),Ft=$t*_;for(let Vt=0;Vt<D;++Vt){let ee=Math.max(0,Math.ceil((Dt-Vt)/S)),pe=Math.min(b.outHeight,(b.inHeight+Dt-Vt)/S),we=Vt*B+Ft;for(let de=0;de<R;++de){let Ie=Math.max(0,Math.ceil((Tt-de)/C)),be=Math.min(b.outWidth,(b.inWidth+Tt-de)/C),Je=de*V+we;for(let ln=0;ln<b.inChannels;++ln){let hn=ln*q+Je;for(let Me=0;Me<b.outChannels;++Me){let Ze=0;for(let Ve=0;Ve<b.batchSize;++Ve){let Un=Ve*bt,Po=Ve*et;for(let Gn=Lt;Gn<Pt;++Gn){let $s=$t+Gn*x-wt,qr=$s*yt+Un,_i=Gn*tt+Po;for(let As=ee;As<pe;++As){let no=Vt+As*S-Dt,Ia=no*mt+qr,Ea=As*ht+_i;for(let Da=Ie;Da<be;++Da){let yc=de+Da*C-Tt,mx=yc*xt+Ia,gx=Da*gt+Ea;Ze+=vt[mx+ln]*j[gx+Me]}}}}L[hn+Me]=Ze}}}}}return e.makeTensorInfo(A.shape,A.dtype,A.values)}let pK={kernelName:Mv,backendName:"cpu",kernelFunc:fK};function dK(n){let{inputs:t,backend:e,attrs:r}=n,{dy:s,filter:u}=t,{pad:l,strides:h,inputShape:p}=r;At([s],"conv3dBackpropInputV2");let m=Jt(s.shape),y=Jt(u.shape),b=aa(p,u.shape,h,1,l),x=new bn(b.inShape,"float32"),S=x.values,[C,I,D,R]=x.strides,A=e.data.get(s.dataId).values,[L,_,B,V]=m,q=e.data.get(u.dataId).values,[j,et,tt,ht]=y,{batchSize:gt,filterDepth:vt,filterHeight:bt,filterWidth:yt,inChannels:mt,inDepth:xt,inHeight:wt,inWidth:Tt,outChannels:Dt,outDepth:$t,outHeight:Lt,outWidth:Pt,strideDepth:Ft,strideHeight:Vt,strideWidth:ee}=b,pe=vt-1-b.padInfo.front,we=bt-1-b.padInfo.top,de=yt-1-b.padInfo.left;for(let Ie=0;Ie<gt;++Ie)for(let be=0;be<mt;++be)for(let Je=0;Je<xt;++Je){let ln=Je-pe,hn=Math.max(0,Math.ceil(ln/Ft)),Me=Math.min($t,(vt+ln)/Ft);for(let Ze=0;Ze<wt;++Ze){let Ve=Ze-we,Un=Math.max(0,Math.ceil(Ve/Vt)),Po=Math.min(Lt,(bt+Ve)/Vt);for(let Gn=0;Gn<Tt;++Gn){let $s=Gn-de,qr=Math.max(0,Math.ceil($s/ee)),_i=Math.min(Pt,(yt+$s)/ee),As=0;for(let no=hn;no<Me;++no){let Ia=no*Ft-ln;for(let Ea=Un;Ea<Po;++Ea){let Da=Ea*Vt-Ve;for(let yc=qr;yc<_i;++yc){let mx=yc*ee-$s,gx=L*Ie+_*no+B*Ea+V*yc,fZ=j*(vt-1-Ia)+et*(bt-1-Da)+tt*(yt-1-mx)+ht*be;for(let Ym=0;Ym<Dt;++Ym){let pZ=A[gx+Ym],dZ=q[fZ+Ym];As+=pZ*dZ}}}}S[C*Ie+I*Je+D*Ze+R*Gn+be]=As}}}return e.makeTensorInfo(x.shape,x.dtype,x.values)}let mK={kernelName:Lv,backendName:"cpu",kernelFunc:dK};let gK=Pe(du,n=>Math.cos(n)),vK={kernelName:du,backendName:"cpu",kernelFunc:gK};let yK=Pe(Sl,n=>Math.cosh(n)),bK={kernelName:Sl,backendName:"cpu",kernelFunc:yK};function FE(n){let{inputs:t,backend:e,attrs:r}=n,{x:s,filter:u}=t,{strides:l,pad:h,dilations:p,dimRoundingMode:m}=r;At([s,u],"depthwiseConv2DNative");let y=Jt(s.shape),b=Jt(u.shape),x=p;x==null&&(x=[1,1]),k(wn(l,x),()=>`Error in depthwiseConv2d: Either strides or dilations must be 1. Got strides ${l} and dilations '${x}'`);let S=Kn(s.shape,u.shape,l,x,h,m,!0),{filterHeight:C,filterWidth:I,dilationHeight:D,dilationWidth:R,padInfo:A}=S,L=A.left,_=A.top,B=S.outChannels/S.inChannels,V=new bn(S.outShape,s.dtype),q=e.data.get(s.dataId).values,j=e.data.get(u.dataId).values,et=V.values;for(let tt=0;tt<S.batchSize;++tt){let ht=tt*y[0],gt=tt*V.strides[0];for(let vt=0;vt<S.outHeight;++vt){let bt=gt+vt*V.strides[1],yt=vt*S.strideHeight-L;for(let mt=0;mt<C;++mt){let xt=yt+mt*D;if(xt<0||xt>=S.inHeight)continue;let wt=mt*b[0],Tt=ht+xt*y[1];for(let Dt=0;Dt<S.outWidth;++Dt){let $t=bt+Dt*V.strides[2],Lt=Dt*S.strideWidth-_;for(let Pt=0;Pt<I;++Pt){let Ft=Lt+Pt*R;if(Ft<0||Ft>=S.inWidth)continue;let Vt=wt+Pt*b[1],ee=Tt+Ft*S.inChannels,pe=$t,we=Vt;for(let de=0;de<S.inChannels;++de){let Ie=q[ee+de];for(let be=0;be<B;++be)et[pe+be]+=Ie*j[we+be];pe+=B,we+=B}}}}}}return e.makeTensorInfo(V.shape,V.dtype,V.values)}let wK={kernelName:bp,backendName:"cpu",kernelFunc:FE};function xK(n){let{inputs:t,backend:e,attrs:r}=n,{x:s,dy:u}=t,{strides:l,dilations:h,pad:p,dimRoundingMode:m,filterShape:y}=r;At([s,u],"depthwiseConv2dNativeBackpropFilter");let b=Kn(s.shape,y,l,h,p,m,!0),{strideHeight:x,strideWidth:S,filterHeight:C,filterWidth:I}=b,D=new bn(b.filterShape,"float32"),R=b.padInfo.left,A=b.padInfo.top,L=b.outChannels/b.inChannels,_=e.data.get(s.dataId).values,B=new bn(s.shape,s.dtype,_),V=e.data.get(u.dataId).values,q=new bn(u.shape,u.dtype,V);for(let j=0;j<C;++j){let et=Math.max(0,Math.ceil((A-j)/x)),tt=Math.min(b.outHeight,(b.inHeight+A-j)/x);for(let ht=0;ht<I;++ht){let gt=Math.max(0,Math.ceil((R-ht)/S)),vt=Math.min(b.outWidth,(b.inWidth+R-ht)/S);for(let bt=0;bt<b.outChannels;++bt){let yt=Math.trunc(bt/L),mt=bt%L,xt=0;for(let wt=0;wt<b.batchSize;++wt)for(let Tt=et;Tt<tt;++Tt){let Dt=j+Tt*x-A;for(let $t=gt;$t<vt;++$t){let Lt=ht+$t*S-R;xt+=B.get(wt,Dt,Lt,yt)*q.get(wt,Tt,$t,bt)}}D.set(xt,j,ht,yt,mt)}}}return e.makeTensorInfo(D.shape,D.dtype,D.values)}let TK={kernelName:zv,backendName:"cpu",kernelFunc:xK};function kK(n){let{inputs:t,backend:e,attrs:r}=n,{dy:s,filter:u}=t,{strides:l,dilations:h,pad:p,dimRoundingMode:m,inputShape:y}=r;At([s,u],"depthwiseConv2DNativeBackpropInput");let b=Jt(s.shape),x=Jt(u.shape),S=Kn(y,u.shape,l,h,p,m,!0),C=new bn(S.inShape,"float32"),I=C.values,[D,R,A]=C.strides,L=e.data.get(s.dataId).values,[_,B,V]=b,q=e.data.get(u.dataId).values,[j,et,tt]=x,{batchSize:ht,filterHeight:gt,filterWidth:vt,inChannels:bt,inHeight:yt,inWidth:mt,outChannels:xt,outHeight:wt,outWidth:Tt,strideHeight:Dt,strideWidth:$t}=S,Lt=gt-1-S.padInfo.top,Pt=vt-1-S.padInfo.left,Ft=xt/bt;for(let Vt=0;Vt<ht;++Vt)for(let ee=0;ee<bt;++ee)for(let pe=0;pe<yt;++pe){let we=pe-Lt,de=Math.max(0,Math.ceil(we/Dt)),Ie=Math.min(wt,(gt+we)/Dt);for(let be=0;be<mt;++be){let Je=be-Pt,ln=Math.max(0,Math.ceil(Je/$t)),hn=Math.min(Tt,(vt+Je)/$t),Me=0;for(let Ze=de;Ze<Ie;++Ze){let Ve=Ze*Dt-we;for(let Un=ln;Un<hn;++Un){let Po=Un*$t-Je,Gn=_*Vt+B*Ze+V*Un,$s=j*(gt-1-Ve)+et*(vt-1-Po)+tt*ee;for(let qr=0;qr<Ft;++qr){let _i=ee*Ft+qr,As=L[Gn+_i],no=q[$s+qr];Me+=As*no}}}I[D*Vt+R*pe+A*be+ee]=Me}}return e.makeTensorInfo(C.shape,C.dtype,C.values)}let SK={kernelName:Wv,backendName:"cpu",kernelFunc:kK};let CK={kernelName:wp,backendName:"cpu",kernelFunc:({inputs:n,backend:t,attrs:e})=>{let{x:r,filter:s}=n,{strides:u,pad:l,dilations:h}=e,p=t,m=p.data.get(r.dataId).values,y=r.shape.length,b=p.data.get(s.dataId).values,x=s.shape.length,{batchSize:S,inHeight:C,inWidth:I,inChannels:D,outHeight:R,outWidth:A,padInfo:L,strideHeight:_,strideWidth:B,filterHeight:V,filterWidth:q,dilationHeight:j,dilationWidth:et,outShape:tt}=ld(r.shape,s.shape,u,l,"NHWC",h),ht=O(tt),gt=tt.length,vt=Kt(r.dtype,ht);for(let yt=0;yt<S;++yt)for(let mt=0;mt<R;++mt){let xt=mt*_-L.top;for(let wt=0;wt<A;++wt){let Tt=wt*B-L.left;for(let Dt=0;Dt<D;++Dt){let $t=Number.MIN_SAFE_INTEGER;for(let Pt=0;Pt<V;++Pt){let Ft=xt+Pt*j;if(Ft>=0&&Ft<C)for(let Vt=0;Vt<q;++Vt){let ee=Tt+Vt*et;if(ee>=0&&ee<I){let pe=Qr([yt,Ft,ee,Dt],y,Jt(r.shape)),we=Qr([Pt,Vt,Dt],x,Jt(s.shape)),de=m[pe]+b[we];de>$t&&($t=de)}}}let Lt=Qr([yt,mt,wt,Dt],gt,Jt(tt));vt[Lt]=$t}}}let bt=p.write(na(vt,r.dtype),tt,r.dtype);return{dataId:bt,shape:tt,dtype:r.dtype}}};let NK={kernelName:Tp,backendName:"cpu",kernelFunc:({inputs:n,backend:t,attrs:e})=>{let{x:r,filter:s,dy:u}=n,{strides:l,pad:h,dilations:p}=e,m=t,y=Mr(r.shape,m.data.get(r.dataId).values),b=Mr(s.shape,m.data.get(s.dataId).values),{batchSize:x,inHeight:S,inWidth:C,inChannels:I,outHeight:D,outWidth:R,padInfo:A,strideHeight:L,strideWidth:_,filterHeight:B,filterWidth:V,dilationHeight:q,dilationWidth:j,outShape:et}=ld(r.shape,s.shape,l,h,"NHWC",p);k(u.rank===et.length,()=>`Error in ${Tp}, dy must have the same rank as output ${et.length}, but got ${u.rank}`);let tt=Mr(et,m.data.get(u.dataId).values),ht=Iv(s.shape,s.dtype);for(let vt=0;vt<x;++vt)for(let bt=0;bt<D;++bt){let yt=bt*L-A.top;for(let mt=0;mt<R;++mt){let xt=mt*_-A.left;for(let wt=0;wt<I;++wt){let Tt=Number.MIN_SAFE_INTEGER,Dt=0,$t=0;for(let Lt=0;Lt<B;++Lt){let Pt=yt+Lt*q;if(Pt>=0&&Pt<S)for(let Ft=0;Ft<V;++Ft){let Vt=xt+Ft*j;if(Vt>=0&&Vt<C){let ee=y[vt][Pt][Vt][wt]+b[Lt][Ft][wt];ee>Tt&&(Tt=ee,Dt=Lt,$t=Ft)}}}ht[Dt][$t][wt]+=tt[vt][bt][mt][wt]}}}let gt=m.write(na(ht,r.dtype),s.shape,s.dtype);return{dataId:gt,shape:s.shape,dtype:s.dtype}}};let IK={kernelName:xp,backendName:"cpu",kernelFunc:({inputs:n,backend:t,attrs:e})=>{let{x:r,filter:s,dy:u}=n,{strides:l,pad:h,dilations:p}=e,m=t,y=Mr(r.shape,m.data.get(r.dataId).values),b=Mr(s.shape,m.data.get(s.dataId).values),{batchSize:x,inHeight:S,inWidth:C,inChannels:I,outHeight:D,outWidth:R,padInfo:A,strideHeight:L,strideWidth:_,filterHeight:B,filterWidth:V,dilationHeight:q,dilationWidth:j,outShape:et}=ld(r.shape,s.shape,l,h,"NHWC",p);k(u.rank===et.length,()=>`Error in ${xp}, dy must have the same rank as output ${et.length}, but got ${u.rank}`);let tt=Mr(et,m.data.get(u.dataId).values),ht=Iv(r.shape,r.dtype);for(let vt=0;vt<x;++vt)for(let bt=0;bt<D;++bt){let yt=bt*L-A.top;for(let mt=0;mt<R;++mt){let xt=mt*_-A.left;for(let wt=0;wt<I;++wt){let Tt=Number.MIN_SAFE_INTEGER,Dt=yt<0?0:yt,$t=xt<0?0:xt;for(let Lt=0;Lt<B;++Lt){let Pt=yt+Lt*q;if(Pt>=0&&Pt<S)for(let Ft=0;Ft<V;++Ft){let Vt=xt+Ft*j;if(Vt>=0&&Vt<C){let ee=y[vt][Pt][Vt][wt]+b[Lt][Ft][wt];ee>Tt&&(Tt=ee,Dt=Pt,$t=Vt)}}}ht[vt][Dt][$t][wt]+=tt[vt][bt][mt][wt]}}}let gt=m.write(na(ht,r.dtype),r.shape,r.dtype);return{dataId:gt,shape:r.shape,dtype:r.dtype}}};let EK=Ca((n,t)=>n/t),DK=sc(mu,EK),Q0={kernelName:mu,backendName:"cpu",kernelFunc:DK};let $K=zb,AK=Wb,_K=Vb,FK=Ub,RK=Gb,PK=Hb,OK=Pe(Nl,n=>{let t=Math.sign(n),e=Math.abs(n),r=1/(1+$K*e);return t*(1-((((PK*r+RK)*r+FK)*r+_K)*r+AK)*r*Math.exp(-e*e))}),MK={kernelName:Nl,backendName:"cpu",kernelFunc:OK};function RE(n,t,e){let r=n.shape,s=r[0],u=r[1],l=e.data.get(n.dataId),h=l.complexTensorInfos.real,p=l.complexTensorInfos.imag,m=[s,u],y=O(m),b=_t("float32",y),x=_t("float32",y);for(let D=0;D<s;D++){let R=X0({inputs:{x:h},backend:e,attrs:{begin:[D,0],size:[1,u]}}),A=X0({inputs:{x:p},backend:e,attrs:{begin:[D,0],size:[1,u]}}),L=Ds({inputs:{real:R,imag:A},backend:e}),{real:_,imag:B}=LK(L,t,e),V=So(_,B);for(let q=0;q<u;q++){let j=qb(V,q);b[D*u+q]=j.real,x[D*u+q]=j.imag}e.disposeIntermediateTensorInfo(R),e.disposeIntermediateTensorInfo(A),e.disposeIntermediateTensorInfo(L)}let S=e.makeTensorInfo(m,"float32",b),C=e.makeTensorInfo(m,"float32",x),I=Ds({inputs:{real:S,imag:C},backend:e});return e.disposeIntermediateTensorInfo(S),e.disposeIntermediateTensorInfo(C),I}function LK(n,t,e){let r=O(n.shape),s=e.data.get(n.dataId),u=e.data.get(s.complexTensorInfos.real.dataId).values,l=e.data.get(s.complexTensorInfos.imag.dataId).values;if(BK(r)){let h=tx(u,l,r,t,e),p=[n.shape[0],n.shape[1]];if(t){let 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        setOutput(float(bestIndex));
      }
    `}}function VE(n,t){return["x","y","z","w","u","v"].slice(0,t).map(e=>`${n}.${e}`)}function nr(n,t){return t===1?[n]:VE(n,t)}function tX(n,t){if(n===1)return"rc";let e="";for(let r=0;r<n;r++)e+=t[r],r<n-1&&(e+=",");return e}function rr(){let n,t,e,r,s,u,l,h,p,m;return ft().getNumber("WEBGL_VERSION")===2?(n="#version 300 es",t="in",e="out",r="in",s="texture",u="outputColor",l="out vec4 outputColor;",h=`
      bool isnan_custom(float val) {
        return (val > 0.0 || val < 0.0) ? false : val != 0.0;
      }

      bvec4 isnan_custom(vec4 val) {
        return bvec4(isnan_custom(val.x),
          isnan_custom(val.y), isnan_custom(val.z), isnan_custom(val.w));
      }

      #define isnan(value) isnan_custom(value)
    `,p="",m=`
      #define round(value) newRound(value)
      int newRound(float value) {
        return int(floor(value + 0.5));
      }

      ivec4 newRound(vec4 value) {
        return ivec4(floor(value + vec4(0.5)));
      }
    `):(n="",t="attribute",e="varying",r="varying",s="texture2D",u="gl_FragColor",l="",h=`
      #define isnan(value) isnan_custom(value)
      bool isnan_custom(float val) {
        return (val > 0. || val < 1. || val == 0.) ? false : true;
      }
      bvec4 isnan_custom(vec4 val) {
        return bvec4(isnan(val.x), isnan(val.y), isnan(val.z), isnan(val.w));
      }
    `,p=`
      uniform float INFINITY;

      bool isinf(float val) {
        return abs(val) == INFINITY;
      }
      bvec4 isinf(vec4 val) {
        return equal(abs(val), vec4(INFINITY));
      }
    `,m=`
      int round(float value) {
        return int(floor(value + 0.5));
      }

      ivec4 round(vec4 value) {
        return ivec4(floor(value + vec4(0.5)));
      }
    `),{version:n,attribute:t,varyingVs:e,varyingFs:r,texture2D:s,output:u,defineOutput:l,defineSpecialNaN:h,defineSpecialInf:p,defineRound:m}}function $i(n,t,e="index"){let r=Jt(t);return r.map((s,u)=>{let l=`int ${n[u]} = ${e} / ${s}`,h=u===r.length-1?`int ${n[u+1]} = ${e} - ${n[u]} * ${s}`:`index -= ${n[u]} * ${s}`;return`${l}; ${h};`}).join("")}function Um(n){return n.length===1?`${n[0]}`:`vec${n.length}(${n.join(",")})`}function Vft(n,t){if(n.length!==t.length)throw new Error(`Vectors to be dotted must be of the same length -got ${n.length} and ${t.length}`);let e=[],r=Math.floor(n.length/4),s=n.length%4;for(let u=0;u<r;u++){let l=n.slice(u*4,u*4+4),h=t.slice(u*4,u*4+4);e.push(`${Um(l)}, ${Um(h)}`)}if(s!==0){let u=n.slice(r*4),l=t.slice(r*4);u.length===1&&(u=u.map(h=>`float(${h})`),l=l.map(h=>`float(${h})`)),e.push(`${Um(u)}, ${Um(l)}`)}return e.map((u,l)=>`dot(${u})`).join("+")}function ux(n){let t=Jt(n).map(e=>e.toString());return`
  int getFlatIndex(ivec3 coords) {
    return coords.x * ${t[0]} + coords.y * ${t[1]} + coords.z;
  }
`}let UE=`
  const float FLOAT_MAX = 1.70141184e38;
  const float FLOAT_MIN = 1.17549435e-38;

  lowp vec4 encode_float(highp float v) {
    if (isnan(v)) {
      return vec4(255, 255, 255, 255);
    }

    highp float av = abs(v);

    if(av < FLOAT_MIN) {
      return vec4(0.0, 0.0, 0.0, 0.0);
    } else if(v > FLOAT_MAX) {
      return vec4(0.0, 0.0, 128.0, 127.0) / 255.0;
    } else if(v < -FLOAT_MAX) {
      return vec4(0.0, 0.0,  128.0, 255.0) / 255.0;
    }

    highp vec4 c = vec4(0,0,0,0);

    highp float e = floor(log2(av));
    highp float m = exp2(fract(log2(av))) - 1.0;

    c[2] = floor(128.0 * m);
    m -= c[2] / 128.0;
    c[1] = floor(32768.0 * m);
    m -= c[1] / 32768.0;
    c[0] = floor(8388608.0 * m);

    highp float ebias = e + 127.0;
    c[3] = floor(ebias / 2.0);
    ebias -= c[3] * 2.0;
    c[2] += floor(ebias) * 128.0;

    c[3] += 128.0 * step(0.0, -v);

    return c / 255.0;
  }
`;let{getBroadcastDims:GE}=Kb;function eX(n,t,e,r){let s=[];n.forEach(C=>{let I=O(C.shapeInfo.logicalShape);C.shapeInfo.isUniform?s.push(`uniform float ${C.name}${I>1?`[${I}]`:""};`):(s.push(`uniform sampler2D ${C.name};`),s.push(`uniform int offset${C.name};`))});let u=s.join(`
`),l=n.map(C=>nX(C,t,r)).join(`
`),h=t.texShape,p=rr(),m=oX(p),y,b,x=uX(p);t.isPacked?(y=rX(t.logicalShape,h),b=iX(p)):(y=sX(t.logicalShape,h),b=aX(p)),r&&(x+=fX);let S=[x,m,b,u,y,l,e].join(`
`);return S}function lc(n){let t=n.shapeInfo.logicalShape;switch(t.length){case 0:return SX(n);case 1:return NX(n);case 2:return EX(n);case 3:return $X(n);case 4:return _X(n);case 5:return FX(n);case 6:return RX(n);default:throw new Error(`${t.length}-D input sampling is not yet supported`)}}function HE(n){let t=n.shapeInfo.logicalShape;switch(t.length){case 0:return kX(n);case 1:return CX(n);case 2:return IX(n);case 3:return DX(n);default:return AX(n)}}function nX(n,t,e=!1){let r="";e?r+=HE(n):r+=lc(n);let s=n.shapeInfo.logicalShape,u=t.logicalShape;return s.length<=u.length&&(e?r+=PX(n,t):r+=OX(n,t)),r}function rX(n,t){switch(n.length){case 0:return qE();case 1:return pX(n,t);case 2:return xX(n,t);case 3:return mX(n,t);default:return vX(n,t)}}function sX(n,t){switch(n.length){case 0:return qE();case 1:return dX(n,t);case 2:return TX(n,t);case 3:return gX(n,t);case 4:return yX(n,t);case 5:return bX(n,t);case 6:return wX(n,t);default:throw new Error(`${n.length}-D output sampling is not yet supported`)}}function oX(n){return`
    float sampleTexture(sampler2D textureSampler, vec2 uv) {
      return ${n.texture2D}(textureSampler, uv).r;
    }
  `}function aX(n){return`
    void setOutput(float val) {
      ${n.output} = vec4(val, 0, 0, 0);
    }
  `}function iX(n){return`
    void setOutput(vec4 val) {
      ${n.output} = val;
    }
  `}function uX(n){let t=`${n.version}
    precision highp float;
    precision highp int;
    precision highp sampler2D;
    ${n.varyingFs} vec2 resultUV;
    ${n.defineOutput}
    const vec2 halfCR = vec2(0.5, 0.5);

    struct ivec5
    {
      int x;
      int y;
      int z;
      int w;
      int u;
    };

    struct ivec6
    {
      int x;
      int y;
      int z;
      int w;
      int u;
      int v;
    };

    uniform float NAN;
    ${n.defineSpecialNaN}
    ${n.defineSpecialInf}
    ${n.defineRound}

    int imod(int x, int y) {
      return x - y * (x / y);
    }

    int idiv(int a, int b, float sign) {
      int res = a / b;
      int mod = imod(a, b);
      if (sign < 0. && mod != 0) {
        res -= 1;
      }
      return res;
    }

    //Based on the work of Dave Hoskins
    //https://www.shadertoy.com/view/4djSRW
    #define HASHSCALE1 443.8975
    float random(float seed){
      vec2 p = resultUV * seed;
      vec3 p3  = fract(vec3(p.xyx) * HASHSCALE1);
      p3 += dot(p3, p3.yzx + 19.19);
      return fract((p3.x + p3.y) * p3.z);
    }

    ${cX}
    ${lX}
    ${hX}
  `;return t}let cX=`
vec2 uvFromFlat(int texNumR, int texNumC, int index) {
  int texR = index / texNumC;
  int texC = index - texR * texNumC;
  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
vec2 packedUVfrom1D(int texNumR, int texNumC, int index) {
  int texelIndex = index / 2;
  int texR = texelIndex / texNumC;
  int texC = texelIndex - texR * texNumC;
  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
`,lX=`
vec2 packedUVfrom2D(int texelsInLogicalRow, int texNumR,
  int texNumC, int row, int col) {
  int texelIndex = (row / 2) * texelsInLogicalRow + (col / 2);
  int texR = texelIndex / texNumC;
  int texC = texelIndex - texR * texNumC;
  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
`,hX=`
vec2 packedUVfrom3D(int texNumR, int texNumC,
    int texelsInBatch, int texelsInLogicalRow, int b,
    int row, int col) {
  int index = b * texelsInBatch + (row / 2) * texelsInLogicalRow + (col / 2);
  int texR = index / texNumC;
  int texC = index - texR * texNumC;
  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);
}
`,fX=`
  float getChannel(vec4 frag, vec2 innerDims) {
    vec2 modCoord = mod(innerDims, 2.);
    return modCoord.x == 0. ?
      (modCoord.y == 0. ? frag.r : frag.g) :
      (modCoord.y == 0. ? frag.b : frag.a);
  }
  float getChannel(vec4 frag, int dim) {
    float modCoord = mod(float(dim), 2.);
    return modCoord == 0. ? frag.r : frag.g;
  }
`;function qE(){return`
    int getOutputCoords() {
      return 0;
    }
  `}function pX(n,t){let e=[Math.ceil(t[0]/2),Math.ceil(t[1]/2)];return e[0]===1?`
      int getOutputCoords() {
        return 2 * int(resultUV.x * ${e[1]}.0);
      }
    `:e[1]===1?`
      int getOutputCoords() {
        return 2 * int(resultUV.y * ${e[0]}.0);
      }
    `:`
    int getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${e[0]}, ${e[1]}));
      return 2 * (resTexRC.x * ${e[1]} + resTexRC.y);
    }
  `}function dX(n,t){return t[0]===1?`
      int getOutputCoords() {
        return int(resultUV.x * ${t[1]}.0);
      }
    `:t[1]===1?`
      int getOutputCoords() {
        return int(resultUV.y * ${t[0]}.0);
      }
    `:`
    int getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${t[0]}, ${t[1]}));
      return resTexRC.x * ${t[1]} + resTexRC.y;
    }
  `}function mX(n,t){let e=[Math.ceil(t[0]/2),Math.ceil(t[1]/2)],r=Math.ceil(n[2]/2),s=r*Math.ceil(n[1]/2);return`
    ivec3 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${e[0]}, ${e[1]}));
      int index = resTexRC.x * ${e[1]} + resTexRC.y;

      int b = index / ${s};
      index -= b * ${s};

      int r = 2 * (index / ${r});
      int c = imod(index, ${r}) * 2;

      return ivec3(b, r, c);
    }
  `}function gX(n,t){let e=$i(["r","c","d"],n);return`
    ivec3 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${t[0]}, ${t[1]}));
      int index = resTexRC.x * ${t[1]} + resTexRC.y;
      ${e}
      return ivec3(r, c, d);
    }
  `}function vX(n,t){let e=[Math.ceil(t[0]/2),Math.ceil(t[1]/2)],r=Math.ceil(n[n.length-1]/2),s=r*Math.ceil(n[n.length-2]/2),u=s,l="",h="b, r, c";for(let p=2;p<n.length-1;p++)u*=n[n.length-p-1],l=`
      int b${p} = index / ${u};
      index -= b${p} * ${u};
    `+l,h=`b${p}, `+h;return`
    ivec${n.length} getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${e[0]}, ${e[1]}));
      int index = resTexRC.x * ${e[1]} + resTexRC.y;

      ${l}

      int b = index / ${s};
      index -= b * ${s};

      int r = 2 * (index / ${r});
      int c = imod(index, ${r}) * 2;

      return ivec${n.length}(${h});
    }
  `}function yX(n,t){let e=$i(["r","c","d","d2"],n);return`
    ivec4 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
        vec2(${t[0]}, ${t[1]}));
      int index = resTexRC.x * ${t[1]} + resTexRC.y;
      ${e}
      return ivec4(r, c, d, d2);
    }
  `}function bX(n,t){let e=$i(["r","c","d","d2","d3"],n);return`
    ivec5 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx * vec2(${t[0]},
                             ${t[1]}));

      int index = resTexRC.x * ${t[1]} + resTexRC.y;

      ${e}

      ivec5 outShape = ivec5(r, c, d, d2, d3);
      return outShape;
    }
  `}function wX(n,t){let e=$i(["r","c","d","d2","d3","d4"],n);return`
    ivec6 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
        vec2(${t[0]}, ${t[1]}));
      int index = resTexRC.x * ${t[1]} + resTexRC.y;

      ${e}

      ivec6 result = ivec6(r, c, d, d2, d3, d4);
      return result;
    }
  `}function xX(n,t){let e=[Math.ceil(t[0]/2),Math.ceil(t[1]/2)];if(K(n,t))return`
      ivec2 getOutputCoords() {
        return 2 * ivec2(resultUV.yx * vec2(${e[0]}, ${e[1]}));
      }
    `;let r=Math.ceil(n[1]/2);return`
    ivec2 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${e[0]}, ${e[1]}));

      int index = resTexRC.x * ${e[1]} + resTexRC.y;
      int r = 2 * (index / ${r});
      int c = imod(index, ${r}) * 2;

      return ivec2(r, c);
    }
  `}function TX(n,t){return K(n,t)?`
      ivec2 getOutputCoords() {
        return ivec2(resultUV.yx * vec2(${t[0]}, ${t[1]}));
      }
    `:n[1]===1?`
      ivec2 getOutputCoords() {
        ivec2 resTexRC = ivec2(resultUV.yx *
                               vec2(${t[0]}, ${t[1]}));
        int index = resTexRC.x * ${t[1]} + resTexRC.y;
        return ivec2(index, 0);
      }
    `:n[0]===1?`
      ivec2 getOutputCoords() {
        ivec2 resTexRC = ivec2(resultUV.yx *
                               vec2(${t[0]}, ${t[1]}));
        int index = resTexRC.x * ${t[1]} + resTexRC.y;
        return ivec2(0, index);
      }
    `:`
    ivec2 getOutputCoords() {
      ivec2 resTexRC = ivec2(resultUV.yx *
                             vec2(${t[0]}, ${t[1]}));
      int index = resTexRC.x * ${t[1]} + resTexRC.y;
      int r = index / ${n[1]};
      int c = index - r * ${n[1]};
      return ivec2(r, c);
    }
  `}function Ai(n){return`offset${n}`}function kX(n){let t=n.name,e="get"+t.charAt(0).toUpperCase()+t.slice(1),r=rr();return`
    vec4 ${e}() {
      return ${r.texture2D}(${t}, halfCR);
    }
  `}function SX(n){let t=n.name,e="get"+t.charAt(0).toUpperCase()+t.slice(1);if(n.shapeInfo.isUniform)return`float ${e}() {return ${t};}`;let[r,s]=n.shapeInfo.texShape;if(r===1&&s===1)return`
      float ${e}() {
        return sampleTexture(${t}, halfCR);
      }
    `;let[u,l]=n.shapeInfo.texShape,h=Ai(t);return`
    float ${e}() {
      vec2 uv = uvFromFlat(${u}, ${l}, ${h});
      return sampleTexture(${t}, uv);
    }
  `}function CX(n){let t=n.name,e="get"+t.charAt(0).toUpperCase()+t.slice(1),r=n.shapeInfo.texShape,s=[Math.ceil(r[0]/2),Math.ceil(r[1]/2)],u=rr();return`
    vec4 ${e}(int index) {
      vec2 uv = packedUVfrom1D(
        ${s[0]}, ${s[1]}, index);
      return ${u.texture2D}(${t}, uv);
    }
  `}function NX(n){let t=n.name,e="get"+t.charAt(0).toUpperCase()+t.slice(1);if(n.shapeInfo.isUniform)return`
      float ${e}(int index) {
        ${hc(n)}
      }
    `;let r=n.shapeInfo.texShape,s=r[0],u=r[1];if(u===1&&s===1)return`
      float ${e}(int index) {
        return sampleTexture(${t}, halfCR);
      }
    `;let l=Ai(t);return u===1?`
      float ${e}(int index) {
        vec2 uv = vec2(0.5, (float(index + ${l}) + 0.5) / ${s}.0);
        return sampleTexture(${t}, uv);
      }
    `:s===1?`
      float ${e}(int index) {
        vec2 uv = vec2((float(index + ${l}) + 0.5) / ${u}.0, 0.5);
        return sampleTexture(${t}, uv);
      }
    `:`
    float ${e}(int index) {
      vec2 uv = uvFromFlat(${s}, ${u}, index + ${l});
      return sampleTexture(${t}, uv);
    }
  `}function IX(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),s=n.shapeInfo.texShape,u=s[0],l=s[1],h=rr();if(s!=null&&K(t,s))return`
      vec4 ${r}(int row, int col) {
        vec2 uv = (vec2(col, row) + halfCR) / vec2(${l}.0, ${u}.0);

        return ${h.texture2D}(${e}, uv);
      }
    `;let p=[Math.ceil(s[0]/2),Math.ceil(s[1]/2)],m=Math.ceil(t[1]/2);return`
    vec4 ${r}(int row, int col) {
      vec2 uv = packedUVfrom2D(${m}, ${p[0]}, ${p[1]}, row, col);
      return ${h.texture2D}(${e}, uv);
    }
  `}function EX(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),s=n.shapeInfo.texShape;if(s!=null&&K(t,s)){let b=s[0],x=s[1];return`
    float ${r}(int row, int col) {
      vec2 uv = (vec2(col, row) + halfCR) / vec2(${x}.0, ${b}.0);
      return sampleTexture(${e}, uv);
    }
  `}let{newShape:u,keptDims:l}=Wt(t),h=u;if(h.length<t.length){let b=fc(n,h),x=["row","col"];return`
      ${lc(b)}
      float ${r}(int row, int col) {
        return ${r}(${pc(x,l)});
      }
    `}if(n.shapeInfo.isUniform)return`
      float ${r}(int row, int col) {
        int index = round(dot(vec2(row, col), vec2(${t[1]}, 1)));
        ${hc(n)}
      }
    `;let p=s[0],m=s[1],y=Ai(e);return m===1?`
    float ${r}(int row, int col) {
      float index = dot(vec3(row, col, ${y}), vec3(${t[1]}, 1, 1));
      vec2 uv = vec2(0.5, (index + 0.5) / ${p}.0);
      return sampleTexture(${e}, uv);
    }
  `:p===1?`
    float ${r}(int row, int col) {
      float index = dot(vec3(row, col, ${y}), vec3(${t[1]}, 1, 1));
      vec2 uv = vec2((index + 0.5) / ${m}.0, 0.5);
      return sampleTexture(${e}, uv);
    }
  `:`
  float ${r}(int row, int col) {
    // Explicitly use integer operations as dot() only works on floats.
    int index = row * ${t[1]} + col + ${y};
    vec2 uv = uvFromFlat(${p}, ${m}, index);
    return sampleTexture(${e}, uv);
  }
`}function DX(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),s=n.shapeInfo.texShape,u=[Math.ceil(s[0]/2),Math.ceil(s[1]/2)];if(t[0]===1){let b=t.slice(1),x=[1,2],S=fc(n,b),C=["b","row","col"];return`
        ${HE(S)}
        vec4 ${r}(int b, int row, int col) {
          return ${r}(${pc(C,x)});
        }
      `}let l=u[0],h=u[1],p=Math.ceil(t[2]/2),m=p*Math.ceil(t[1]/2),y=rr();return`
    vec4 ${r}(int b, int row, int col) {
      vec2 uv = packedUVfrom3D(
        ${l}, ${h}, ${m}, ${p}, b, row, col);
      return ${y.texture2D}(${e}, uv);
    }
  `}function $X(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),s=t[1]*t[2],u=t[2],{newShape:l,keptDims:h}=Wt(t),p=l;if(p.length<t.length){let C=fc(n,p),I=["row","col","depth"];return`
        ${lc(C)}
        float ${r}(int row, int col, int depth) {
          return ${r}(${pc(I,h)});
        }
      `}if(n.shapeInfo.isUniform)return`
      float ${r}(int row, int col, int depth) {
        int index = round(dot(vec3(row, col, depth),
                          vec3(${s}, ${u}, 1)));
        ${hc(n)}
      }
    `;let m=n.shapeInfo.texShape,y=m[0],b=m[1],x=n.shapeInfo.flatOffset;if(b===s&&x==null)return`
        float ${r}(int row, int col, int depth) {
          float texR = float(row);
          float texC = dot(vec2(col, depth), vec2(${u}, 1));
          vec2 uv = (vec2(texC, texR) + halfCR) /
                     vec2(${b}.0, ${y}.0);
          return sampleTexture(${e}, uv);
        }
      `;if(b===u&&x==null)return`
    float ${r}(int row, int col, int depth) {
      float texR = dot(vec2(row, col), vec2(${t[1]}, 1));
      float texC = float(depth);
      vec2 uv = (vec2(texC, texR) + halfCR) / vec2(${b}.0, ${y}.0);
      return sampleTexture(${e}, uv);
    }
  `;let S=Ai(e);return`
      float ${r}(int row, int col, int depth) {
        // Explicitly use integer operations as dot() only works on floats.
        int index = row * ${s} + col * ${u} + depth + ${S};
        vec2 uv = uvFromFlat(${y}, ${b}, index);
        return sampleTexture(${e}, uv);
      }
  `}function AX(n){let t=n.shapeInfo.logicalShape,e=t.length,r=n.name,s="get"+r.charAt(0).toUpperCase()+r.slice(1),u=n.shapeInfo.texShape,l=[Math.ceil(u[0]/2),Math.ceil(u[1]/2)],h=l[0],p=l[1],m=Math.ceil(t[e-1]/2),y=m*Math.ceil(t[e-2]/2),b="int b, int row, int col",x=`b * ${y} + (row / 2) * ${m} + (col / 2)`;for(let C=2;C<e-1;C++)b=`int b${C}, `+b,y*=t[e-C-1],x=`b${C} * ${y} + `+x;let S=rr();return`
    vec4 ${s}(${b}) {
      int index = ${x};
      int texR = index / ${p};
      int texC = index - texR * ${p};
      vec2 uv = (vec2(texC, texR) + halfCR) / vec2(${p}, ${h});
      return ${S.texture2D}(${r}, uv);
    }
  `}function _X(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),s=t[3],u=t[2]*s,l=t[1]*u,{newShape:h,keptDims:p}=Wt(t);if(h.length<t.length){let C=fc(n,h),I=["row","col","depth","depth2"];return`
      ${lc(C)}
      float ${r}(int row, int col, int depth, int depth2) {
        return ${r}(${pc(I,p)});
      }
    `}if(n.shapeInfo.isUniform)return`
      float ${r}(int row, int col, int depth, int depth2) {
        int index = round(dot(vec4(row, col, depth, depth2),
                          vec4(${l}, ${u}, ${s}, 1)));
        ${hc(n)}
      }
    `;let m=n.shapeInfo.flatOffset,y=n.shapeInfo.texShape,b=y[0],x=y[1];if(x===l&&m==null)return`
      float ${r}(int row, int col, int depth, int depth2) {
        float texR = float(row);
        float texC =
            dot(vec3(col, depth, depth2),
                vec3(${u}, ${s}, 1));
        vec2 uv = (vec2(texC, texR) + halfCR) /
                   vec2(${x}.0, ${b}.0);
        return sampleTexture(${e}, uv);
      }
    `;if(x===s&&m==null)return`
      float ${r}(int row, int col, int depth, int depth2) {
        float texR = dot(vec3(row, col, depth),
                         vec3(${t[1]*t[2]}, ${t[2]}, 1));
        float texC = float(depth2);
        vec2 uv = (vec2(texC, texR) + halfCR) /
                  vec2(${x}.0, ${b}.0);
        return sampleTexture(${e}, uv);
      }
    `;let S=Ai(e);return`
    float ${r}(int row, int col, int depth, int depth2) {
      // Explicitly use integer operations as dot() only works on floats.
      int index = row * ${l} + col * ${u} +
          depth * ${s} + depth2;
      vec2 uv = uvFromFlat(${b}, ${x}, index + ${S});
      return sampleTexture(${e}, uv);
    }
  `}function FX(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),s=t[4],u=t[3]*s,l=t[2]*u,h=t[1]*l,{newShape:p,keptDims:m}=Wt(t);if(p.length<t.length){let I=fc(n,p),D=["row","col","depth","depth2","depth3"];return`
      ${lc(I)}
      float ${r}(int row, int col, int depth, int depth2, int depth3) {
        return ${r}(${pc(D,m)});
      }
    `}if(n.shapeInfo.isUniform)return`
      float ${r}(int row, int col, int depth, int depth2, int depth3) {
        float index = dot(
          vec4(row, col, depth, depth2),
          vec4(${h}, ${l}, ${u}, ${s})) +
          depth3;
        ${hc(n)}
      }
    `;let y=n.shapeInfo.flatOffset,b=n.shapeInfo.texShape,x=b[0],S=b[1];if(S===h&&y==null)return`
      float ${r}(int row, int col, int depth, int depth2, int depth3) {
        int texR = row;
        float texC = dot(vec4(col, depth, depth2, depth3),
                         vec4(${l}, ${u}, ${s}, 1));
        vec2 uv = (vec2(texC, texR) + halfCR) /
                   vec2(${S}.0, ${x}.0);
        return sampleTexture(${e}, uv);
      }
    `;if(S===s&&y==null)return`
      float ${r}(int row, int col, int depth, int depth2, int depth3) {
        float texR = dot(
          vec4(row, col, depth, depth2),
          vec4(${t[1]*t[2]*t[3]},
               ${t[2]*t[3]}, ${t[3]}, 1));
        int texC = depth3;
        vec2 uv = (vec2(texC, texR) + halfCR) /
                  vec2(${S}.0, ${x}.0);
        return sampleTexture(${e}, uv);
      }
    `;let C=Ai(e);return`
    float ${r}(int row, int col, int depth, int depth2, int depth3) {
      // Explicitly use integer operations as dot() only works on floats.
      int index = row * ${h} + col * ${l} + depth * ${u} +
          depth2 * ${s} + depth3 + ${C};
      vec2 uv = uvFromFlat(${x}, ${S}, index);
      return sampleTexture(${e}, uv);
    }
  `}function RX(n){let t=n.shapeInfo.logicalShape,e=n.name,r="get"+e.charAt(0).toUpperCase()+e.slice(1),{newShape:s,keptDims:u}=Wt(t);if(s.length<t.length){let D=fc(n,s),R=["row","col","depth","depth2","depth3","depth4"];return`
      ${lc(D)}
      float ${r}(int row, int col, int depth,
                    int depth2, int depth3, int depth4) {
        return ${r}(${pc(R,u)});
      }
    `}let l=t[5],h=t[4]*l,p=t[3]*h,m=t[2]*p,y=t[1]*m;if(n.shapeInfo.isUniform)return`
      float ${r}(int row, int col, int depth,
                  int depth2, int depth3, int depth4) {
        int index = round(dot(
          vec4(row, col, depth, depth2),
          vec4(${y}, ${m}, ${p}, ${h})) +
          dot(
            vec2(depth3, depth4),
            vec2(${l}, 1)));
        ${hc(n)}
      }
    `;let b=n.shapeInfo.flatOffset,x=n.shapeInfo.texShape,S=x[0],C=x[1];if(C===y&&b==null)return`
      float ${r}(int row, int col, int depth,
                    int depth2, int depth3, int depth4) {
        int texR = row;
        float texC = dot(vec4(col, depth, depth2, depth3),
          vec4(${m}, ${p}, ${h}, ${l})) +
               float(depth4);
        vec2 uv = (vec2(texC, texR) + halfCR) /
                   vec2(${C}.0, ${S}.0);
        return sampleTexture(${e}, uv);
      }
    `;if(C===l&&b==null)return`
      float ${r}(int row, int col, int depth,
                    int depth2, int depth3, int depth4) {
        float texR = dot(vec4(row, col, depth, depth2),
          vec4(${t[1]*t[2]*t[3]*t[4]},
               ${t[2]*t[3]*t[4]},
               ${t[3]*t[4]},
               ${t[4]})) + float(depth3);
        int texC = depth4;
        vec2 uv = (vec2(texC, texR) + halfCR) /
                  vec2(${C}.0, ${S}.0);
        return sampleTexture(${e}, uv);
      }
    `;let I=Ai(e);return`
    float ${r}(int row, int col, int depth,
                  int depth2, int depth3, int depth4) {
      // Explicitly use integer operations as dot() only works on floats.
      int index = row * ${y} + col * ${m} + depth * ${p} +
          depth2 * ${h} + depth3 * ${l} + depth4 + ${I};
      vec2 uv = uvFromFlat(${S}, ${C}, index);
      return sampleTexture(${e}, uv);
    }
  `}function hc(n){let t=n.name,e=O(n.shapeInfo.logicalShape);return e<2?`return ${t};`:`
    for (int i = 0; i < ${e}; i++) {
      if (i == index) {
        return ${t}[i];
      }
    }
  `}function PX(n,t){let e=n.name,r=e.charAt(0).toUpperCase()+e.slice(1),s="get"+r+"AtOutCoords",u=n.shapeInfo.logicalShape.length,l=t.logicalShape.length,h=GE(n.shapeInfo.logicalShape,t.logicalShape),p=We(l),m=l-u,y,b=["x","y","z","w","u","v"];u===0?y="":l<2&&h.length>=1?y="coords = 0;":y=h.map(A=>`coords.${b[A+m]} = 0;`).join(`
`);let x="";l<2&&u>0?x="coords":x=n.shapeInfo.logicalShape.map((A,L)=>`coords.${b[L+m]}`).join(", ");let S="return outputValue;",C=O(n.shapeInfo.logicalShape),I=C===1,D=O(t.logicalShape),R=D===1;if(u===1&&!I&&!R)S=`
      return vec4(outputValue.xy, outputValue.xy);
    `;else if(I&&!R)l===1?S=`
        return vec4(outputValue.x, outputValue.x, 0., 0.);
      `:S=`
        return vec4(outputValue.x);
      `;else if(h.length){let A=u-2,L=u-1;h.indexOf(A)>-1&&h.indexOf(L)>-1?S="return vec4(outputValue.x);":h.indexOf(A)>-1?S="return vec4(outputValue.x, outputValue.y, outputValue.x, outputValue.y);":h.indexOf(L)>-1&&(S="return vec4(outputValue.xx, outputValue.zz);")}return`
    vec4 ${s}() {
      ${p} coords = getOutputCoords();
      ${y}
      vec4 outputValue = get${r}(${x});
      ${S}
    }
  `}function OX(n,t){let e=n.name,r=e.charAt(0).toUpperCase()+e.slice(1),s="get"+r+"AtOutCoords",u=t.texShape,l=n.shapeInfo.texShape,h=n.shapeInfo.logicalShape.length,p=t.logicalShape.length;if(!n.shapeInfo.isUniform&&h===p&&n.shapeInfo.flatOffset==null&&K(l,u))return`
      float ${s}() {
        return sampleTexture(${e}, resultUV);
      }
    `;let m=We(p),y=GE(n.shapeInfo.logicalShape,t.logicalShape),b=p-h,x,S=["x","y","z","w","u","v"];h===0?x="":p<2&&y.length>=1?x="coords = 0;":x=y.map(I=>`coords.${S[I+b]} = 0;`).join(`
`);let C="";return p<2&&h>0?C="coords":C=n.shapeInfo.logicalShape.map((I,D)=>`coords.${S[D+b]}`).join(", "),`
    float ${s}() {
      ${m} coords = getOutputCoords();
      ${x}
      return get${r}(${C});
    }
  `}function We(n){if(n<=1)return"int";if(n===2)return"ivec2";if(n===3)return"ivec3";if(n===4)return"ivec4";if(n===5)return"ivec5";if(n===6)return"ivec6";throw Error(`GPU for rank ${n} is not yet supported`)}function fc(n,t){let e=JSON.parse(JSON.stringify(n));return e.shapeInfo.logicalShape=t,e}function pc(n,t){return t.map(e=>n[e]).join(", ")}class MX{constructor(t,e,r,s){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,k(t.length>2,()=>`Packed arg${r.charAt(0).toUpperCase()+r.slice(1)} supports only inputs with rank above 2.`);let u=t[t.length-1],l=Math.ceil(u/e);this.outputShape=t.slice(0,-1),l>1&&this.outputShape.push(l),s||this.variableNames.push("bestIndicesA");let h=this.outputShape,p=h.length,m=We(p),y=nr("coords",p),b,x;if(l===1){x=p+1;let j=We(x);b=`
        ${j} sourceLocR = ${j}(${y.join()}, 0);
        ++${y[p-1]};
        ${j} sourceLocG = ${j}(${y.join()}, 0);
        ++${y[p-2]};
        ${j} sourceLocA = ${j}(${y.join()}, 0);
        --${y[p-1]};
        ${j} sourceLocB = ${j}(${y.join()}, 0);
        --${y[p-2]};`}else x=p,b=`
        ${m} sourceLocR = coords;
        ++${y[p-1]};
        ${m} sourceLocG = coords;
        ++${y[p-2]};
        ${m} sourceLocA = coords;
        --${y[p-1]};
        ${m} sourceLocB = coords;
        --${y[p-2]};`;let S=["x","y","z","w","u","v"].slice(0,x),C="."+S[x-1],I=S.map(j=>"int "+j),D=nr("sourceLocR",x-1).concat("inIdx.r"),R=nr("sourceLocG",x-1).concat("inIdx.g"),A=nr("sourceLocB",x-1).concat("inIdx.b"),L=nr("sourceLocA",x-1).concat("inIdx.a"),_=r==="max"?"greaterThan":"lessThan",B=s?"":`
          inIdx = round(vec4(getBestIndicesAChannel(${D.join()}),
                             getBestIndicesAChannel(${R.join()}),
                             getBestIndicesAChannel(${A.join()}),
                             getBestIndicesAChannel(${L.join()})));`,V=`vec4(
            getAChannel(${D.join()}),
            hasNextCol ? getAChannel(${R.join()}) : 0.,
            hasNextRow ? getAChannel(${A.join()}) : 0.,
            hasNextRow && hasNextCol ? getAChannel(${L.join()}) : 0.)`,q=s?"":`
      float getBestIndicesAChannel(${I.join()}) {
        return getChannel(getBestIndicesA(${S.join()}),
                                          vec2(${S.slice(-2).join()}));
      }`;this.userCode=`
      float getAChannel(${I.join()}) {
        return getChannel(getA(${S.join()}),
                               vec2(${S.slice(-2).join()}));
      }
      ${q}
      void main() {
        ${m} coords = getOutputCoords();
        bool hasNextCol = ${y[p-1]} < ${h[p-1]-1};
        bool hasNextRow = ${y[p-2]} < ${h[p-2]-1};
        ${b}
        ivec4 srcIdx = ivec4(sourceLocR${C}, sourceLocG${C},
          sourceLocB${C}, sourceLocA${C}) * ${e};
        ivec4 inIdx = srcIdx;
        vec4 bestIndex = vec4(inIdx);
        vec4 bestValue = ${V};

        for (int i = 0; i < ${e}; i++) {
          inIdx = srcIdx;
          ${B}
          vec4 candidate = ${V};
          bvec4 nan = isnan(candidate);
          bvec4 replace = bvec4(
            vec4(${_}(candidate, bestValue)) * (vec4(1.0) - vec4(nan)));

          bestValue = vec4(replace.x  ? candidate.x : bestValue.x,
                           replace.y  ? candidate.y : bestValue.y,
                           replace.z  ? candidate.z : bestValue.z,
                           replace.w  ? candidate.w : bestValue.w);
          bestIndex = mix(bestIndex, vec4(inIdx), vec4(replace));
          srcIdx++;
        }
        setOutput(bestIndex);
      }
    `}}class LX{constructor(t){this.variableNames=["dy"],this.outputShape=t.inShape;let e=t.filterHeight,r=t.filterWidth,s=t.strideHeight,u=t.strideWidth,l=t.dilationHeight,h=t.dilationWidth,p=t.effectiveFilterHeight,m=t.effectiveFilterWidth,y=p-1-t.padInfo.top,b=m-1-t.padInfo.left,x=1/(e*r);this.userCode=`
      const ivec2 pads = ivec2(${y}, ${b});
      const float avgMultiplier = float(${x});

      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];

        ivec2 dyRCCorner = coords.yz - pads;
        int dyRCorner = dyRCCorner.x;
        int dyCCorner = dyRCCorner.y;

        // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;
        for (int wR = 0; wR < ${p};
            wR += ${l}) {
          float dyR = float(dyRCorner + wR) / ${s}.0;

          if (dyR < 0.0 || dyR >= ${t.outHeight}.0 || fract(dyR) > 0.0) {
            continue;
          }
          int idyR = int(dyR);

          for (int wC = 0; wC < ${m};
            wC+= ${h}) {
            float dyC = float(dyCCorner + wC) / ${u}.0;

            if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                fract(dyC) > 0.0) {
              continue;
            }
            int idyC = int(dyC);

            float dyValue = getDy(b, idyR, idyC, d);

            dotProd += dyValue * avgMultiplier;
          }
        }
        setOutput(dotProd);
      }
    `}}class BX{constructor(t){this.variableNames=["dy"],this.outputShape=t.inShape;let e=t.filterDepth,r=t.filterHeight,s=t.filterWidth,u=t.strideDepth,l=t.strideHeight,h=t.strideWidth,p=t.dilationDepth,m=t.dilationHeight,y=t.dilationWidth,b=t.effectiveFilterDepth,x=t.effectiveFilterHeight,S=t.effectiveFilterWidth,C=b-1-t.padInfo.front,I=x-1-t.padInfo.top,D=S-1-t.padInfo.left,R=1/(e*r*s);this.userCode=`
      const ivec3 pads = ivec3(${C}, ${I}, ${D});
      const float avgMultiplier = float(${R});

      void main() {
        ivec5 coords = getOutputCoords();
        int batch = coords.x;
        int ch = coords.u;

        ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;
        int dyDCorner = dyCorner.x;
        int dyRCorner = dyCorner.y;
        int dyCCorner = dyCorner.z;

        // Convolve dy(?, ?, ?, d) with pos mask(:, :, :, ch) to get
        // dx(xD, xR, xC, ch).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;

        for (int wD = 0; wD < ${b};
            wD += ${p}) {
          float dyD = float(dyDCorner + wD) / ${u}.0;

          if (dyD < 0.0 || dyD >= ${t.outDepth}.0 || fract(dyD) > 0.0) {
            continue;
          }
          int idyD = int(dyD);

          for (int wR = 0; wR < ${x};
              wR += ${m}) {
            float dyR = float(dyRCorner + wR) / ${l}.0;

            if (dyR < 0.0 || dyR >= ${t.outHeight}.0 ||
                fract(dyR) > 0.0) {
              continue;
            }
            int idyR = int(dyR);

            for (int wC = 0; wC < ${S};
                wC += ${y}) {
              float dyC = float(dyCCorner + wC) / ${h}.0;

              if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                  fract(dyC) > 0.0) {
                continue;
              }
              int idyC = int(dyC);

              float dyValue = getDy(batch, idyD, idyR, idyC, ch);

              dotProd += dyValue * avgMultiplier;
            }
          }
        }
        setOutput(dotProd);
      }
    `}}let jE=`
  if (isnan(a)) return a;
  if (isnan(b)) return b;
`,zX=`
  float s = sign(a) * sign(b);
  int ia = round(a);
  int ib = round(b);
  if (ib != 0) {
    // Windows (D3D) wants guaranteed non-zero int division at compile-time.
    return float(idiv(ia, ib, s));
  } else {
    return NAN;
  }
`,WX=`
if(a < 0.0 && floor(b) < b){
  return NAN;
}
if (b == 0.0) {
  return 1.0;
}
return (round(mod(b, 2.0)) != 1) ?
    pow(abs(a), b) : sign(a) * pow(abs(a), b);
`,Uft="return (a - b) * (a - b);",VX="return float(a == b);",UX="return float(a < b);",GX="return float(a <= b);",HX="return float(a > b);",qX="return float(a >= b);",jX="return float(a >= 1.0 && b >= 1.0);",KX="return float(a >= 1.0 || b >= 1.0);",XX=jE+`
  return max(a, b);
`,YX=jE+`
  return min(a, b);
`,JX=`if (b == 0.0) return NAN;
  return mod(a, b);`,ZX="return (b >= 1.0) ? a : a * (b + 1.0);",KE="return (a < 0.) ? b * a : a;";class Yn{constructor(t,e,r){this.variableNames=["A","B"],this.outputShape=ve(e,r),this.userCode=`
      float binaryOperation(float a, float b) {
        ${t}
      }

      void main() {
        float a = getAAtOutCoords();
        float b = getBAtOutCoords();
        setOutput(binaryOperation(a, b));
      }
    `}}let Gm=`
  result.r = isNaN.r > 0. ? NAN : result.r;
  result.g = isNaN.g > 0. ? NAN : result.g;
  result.b = isNaN.b > 0. ? NAN : result.b;
  result.a = isNaN.a > 0. ? NAN : result.a;
`,QX=`
  ivec4 ia = round(a);
  ivec4 ib = round(b);
  bvec4 cond = notEqual(ib, ivec4(0));
  ivec4 result = ivec4(0);
  vec4 s = sign(a) * sign(b);

  // Windows (D3D) wants guaranteed non-zero int division at compile-time.
  if (cond[0]) {
    result[0] = idiv(ia[0], ib[0], s[0]);
  }
  if (cond[1]) {
    result[1] = idiv(ia[1], ib[1], s[1]);
  }
  if (cond[2]) {
    result[2] = idiv(ia[2], ib[2], s[2]);
  }
  if (cond[3]) {
    result[3] = idiv(ia[3], ib[3], s[3]);
  }
  return vec4(result);
`,tY=`
  // isModRound1 has 1 for components with round(mod(b, 2.0)) == 1, 0 otherwise.
  vec4 isModRound1 = vec4(equal(round(mod(b, 2.0)), ivec4(1)));
  vec4 multiplier = sign(a) * isModRound1 + (vec4(1.0) - isModRound1);
  vec4 result = multiplier * pow(abs(a), b);

  // Ensure that a^0 = 1, including 0^0 = 1 as this correspond to TF and JS
  bvec4 isExpZero = equal(b, vec4(0.0));
  result.r = isExpZero.r ? 1.0 : result.r;
  result.g = isExpZero.g ? 1.0 : result.g;
  result.b = isExpZero.b ? 1.0 : result.b;
  result.a = isExpZero.a ? 1.0 : result.a;

  vec4 isNaN = vec4(lessThan(a, vec4(0.0))) * vec4(lessThan(floor(b), b));
  `+Gm+`
  return result;
`,XE=`
  vec4 aLessThanZero = vec4(lessThan(a, vec4(0.)));
  return (aLessThanZero * (b * a)) + ((vec4(1.0) - aLessThanZero) * a);
`,eY=`
  vec4 bGTEZero = vec4(greaterThanEqual(b, vec4(0.)));
  return (bGTEZero * a) + ((vec4(1.0) - bGTEZero) * (a * (b + vec4(1.0))));
`,nY=`
  return vec4(equal(a, b));
`,Gft=`
  return vec4(notEqual(a, b));
`,rY=`
  return vec4(lessThan(a, b));
`,sY=`
  return vec4(lessThanEqual(a, b));
`,oY=`
  return vec4(greaterThan(a, b));
`,aY=`
  return vec4(greaterThanEqual(a, b));
`,iY=`
  return vec4(
    vec4(greaterThanEqual(a, vec4(1.0))) *
    vec4(greaterThanEqual(b, vec4(1.0))));
`,uY=`
  return min(
    vec4(greaterThanEqual(a, vec4(1.0))) +
    vec4(greaterThanEqual(b, vec4(1.0))),
    vec4(1.0));
`,cY=`
  vec4 result = vec4(max(a, b));
  vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));
  `+Gm+`
  return result;
`,lY=`
  vec4 result = vec4(min(a, b));
  vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));
  `+Gm+`
  return result;
`,hY=`
  vec4 result = mod(a, b);
  vec4 isNaN = vec4(equal(b, vec4(0.0)));
  `+Gm+`
  return result;
`;class Ao{constructor(t,e,r,s=!1){this.variableNames=["A","B"],this.supportsBroadcasting=!0,this.packedInputs=!0,this.packedOutput=!0,this.outputShape=ve(e,r);let u=this.outputShape.length,l="";if(s)if(u===0||O(this.outputShape)===1)l=`
          result.y = 0.;
          result.z = 0.;
          result.w = 0.;
        `;else{let h=We(u);if(l=`
          ${h} coords = getOutputCoords();
        `,u===1)l+=`
            result.y = (coords + 1) >= ${this.outputShape[0]} ? 0. : result.y;
            result.z = 0.;
            result.w = 0.;
          `;else{let p=nr("coords",u);l+=`
            bool nextRowOutOfBounds =
              (${p[u-2]} + 1) >= ${this.outputShape[u-2]};
            bool nextColOutOfBounds =
              (${p[u-1]} + 1) >= ${this.outputShape[u-1]};
            result.y = nextColOutOfBounds ? 0. : result.y;
            result.z = nextRowOutOfBounds ? 0. : result.z;
            result.w = nextColOutOfBounds || nextRowOutOfBounds ? 0. : result.w;
          `}}this.userCode=`
      vec4 binaryOperation(vec4 a, vec4 b) {
        ${t}
      }

      void main() {
        vec4 a = getAAtOutCoords();
        vec4 b = getBAtOutCoords();

        vec4 result = binaryOperation(a, b);
        ${l}

        setOutput(result);
      }
    `}}class fY{constructor(t){this.variableNames=["A"],this.outputShape=t,this.userCode=`
      uniform float minVal;
      uniform float maxVal;

      void main() {
        float value = getAAtOutCoords();
        if (isnan(value)) {
          setOutput(value);
          return;
        }

        setOutput(clamp(value, minVal, maxVal));
      }
    `}getCustomSetupFunc(t,e){return(r,s)=>{this.minLoc==null&&(this.minLoc=r.getUniformLocationNoThrow(s,"minVal"),this.maxLoc=r.getUniformLocationNoThrow(s,"maxVal")),r.gl.uniform1f(this.minLoc,t),r.gl.uniform1f(this.maxLoc,e)}}}class pY{constructor(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.userCode=`
      uniform float minVal;
      uniform float maxVal;

      void main() {
        vec4 value = getAAtOutCoords();

        if (any(isnan(value))) {
          setOutput(value);
          return;
        }

        setOutput(clamp(value, vec4(minVal), vec4(maxVal)));
      }
    `}getCustomSetupFunc(t,e){return(r,s)=>{this.minLoc==null&&(this.minLoc=r.getUniformLocationNoThrow(s,"minVal"),this.maxLoc=r.getUniformLocationNoThrow(s,"maxVal")),r.gl.uniform1f(this.minLoc,t),r.gl.uniform1f(this.maxLoc,e)}}}class dY{constructor(t){this.variableNames=["real","imag"],this.outputShape=t,this.userCode=`
      void main() {
        float re = abs(getRealAtOutCoords());
        float im = abs(getImagAtOutCoords());
        float mx = max(re, im);

        // sadly the length function in glsl is not underflow-safe
        // (at least not on Intel GPUs). So the safe solution is
        // to ensure underflow-safety in all cases.
        setOutput(
          mx == 0.0 ? 0.0 : mx * length(vec2(1, min(re, im)/mx))
        );
      }
    `}}class mY{constructor(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;let e=t.strideHeight,r=t.strideWidth,s=t.padInfo.top,u=t.padInfo.left,l=t.dataFormat==="channelsLast";this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int wR = coords.x;
        int wC = coords.y;
        int d1 = coords.z;
        int d2 = coords.w;

        // Convolve x(?, ?, d1) with dy(:, :, d2) to get dw(wR, wC, d1, d2).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;

        for (int b = 0; b < ${t.batchSize}; b++) {
          for (int yR = 0; yR < ${t.outHeight}; yR++) {
            int xR = wR + yR * ${e} - ${s};

            if (xR < 0 || xR >= ${t.inHeight}) {
              continue;
            }

            for (int yC = 0; yC < ${t.outWidth}; yC++) {
              int xC = wC + yC * ${r} - ${u};

              if (xC < 0 || xC >= ${t.inWidth}) {
                continue;
              }

              if (${l}) {
                float dyValue = getDy(b, yR, yC, d2);
                float xValue = getX(b, xR, xC, d1);
                dotProd += (xValue * dyValue);
              } else {
                float dyValue = getDy(b, d2, yR, yC);
                float xValue = getX(b, d1, xR, xC);
                dotProd += (xValue * dyValue);
              }

            }
          }
        }
        setOutput(dotProd);
      }
    `}}class gY{constructor(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;let e=t.filterHeight,r=t.filterWidth,s=t.strideHeight,u=t.strideWidth,l=t.dataFormat==="channelsLast",h=e-1-t.padInfo.top,p=r-1-t.padInfo.left,m=l?1:2,y=l?2:3,b=l?3:1;this.userCode=`
      const ivec2 pads = ivec2(${h}, ${p});

      void main() {
        ivec4 coords = getOutputCoords();
        int batch = coords[0];
        int d1 = coords[${b}];

        ivec2 dyCorner = ivec2(coords[${m}], coords[${y}]) - pads;
        int dyRCorner = dyCorner.x;
        int dyCCorner = dyCorner.y;

        // Convolve dy(?, ?, d2) with w(:, :, d1, d2) to compute dx(xR, xC, d1).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;
        for (int wR = 0; wR < ${e}; wR++) {
          float dyR = float(dyRCorner + wR) / ${s}.0;

          if (dyR < 0.0 || dyR >= ${t.outHeight}.0 || fract(dyR) > 0.0) {
            continue;
          }
          int idyR = int(dyR);

          int wRPerm = ${e} - 1 - wR;

          for (int wC = 0; wC < ${r}; wC++) {
            float dyC = float(dyCCorner + wC) / ${u}.0;

            if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                fract(dyC) > 0.0) {
              continue;
            }
            int idyC = int(dyC);

            int wCPerm = ${r} - 1 - wC;

            for (int d2 = 0; d2 < ${t.outChannels}; d2++) {

              if (${l}) {
                float xValue = getDy(batch, idyR, idyC, d2);
                float wValue = getW(wRPerm, wCPerm, d1, d2);
                dotProd += xValue * wValue;
              } else {
                float xValue = getDy(batch, d2, idyR, idyC);
                float wValue = getW(wRPerm, wCPerm, d1, d2);
                dotProd += xValue * wValue;
              }

            }
          }
        }
        setOutput(dotProd);
      }
    `}}class vY{constructor(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;let e=t.strideDepth,r=t.strideHeight,s=t.strideWidth,u=t.padInfo.front,l=t.padInfo.top,h=t.padInfo.left;this.userCode=`
      void main() {
        ivec5 coords = getOutputCoords();
        int wF = coords.x;
        int wR = coords.y;
        int wC = coords.z;
        int d1 = coords.w;
        int d2 = coords.u;

        float dotProd = 0.0;

        for (int b = 0; b < ${t.batchSize}; b++) {
          for (int yF = 0; yF < ${t.outDepth}; yF++) {
            int xF = wF + yF * ${e} - ${u};

            if (xF < 0 || xF >= ${t.inDepth}) {
              continue;
            }

            for (int yR = 0; yR < ${t.outHeight}; yR++) {
              int xR = wR + yR * ${r} - ${l};

              if (xR < 0 || xR >= ${t.inHeight}) {
                continue;
              }

              for (int yC = 0; yC < ${t.outWidth}; yC++) {
                int xC = wC + yC * ${s} - ${h};

                if (xC < 0 || xC >= ${t.inWidth}) {
                  continue;
                }

                float dyValue = getDy(b, yF, yR, yC, d2);
                float xValue = getX(b, xF, xR, xC, d1);
                dotProd += (xValue * dyValue);
              }
            }
          }
        }
        setOutput(dotProd);
      }
    `}}class yY{constructor(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;let e=t.filterDepth,r=t.filterHeight,s=t.filterWidth,u=t.strideDepth,l=t.strideHeight,h=t.strideWidth,p=e-1-t.padInfo.front,m=r-1-t.padInfo.top,y=s-1-t.padInfo.left;this.userCode=`
      const ivec3 pads = ivec3(${p}, ${m}, ${y});

      void main() {
        ivec5 coords = getOutputCoords();
        int batch = coords.x;
        int d1 = coords.u;


        ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;
        int dyFCorner = dyCorner.x;
        int dyRCorner = dyCorner.y;
        int dyCCorner = dyCorner.z;

        float dotProd = 0.0;
        for (int wF = 0; wF < ${e}; wF++) {
          float dyF = float(dyFCorner + wF) / ${u}.0;

          if (dyF < 0.0 || dyF >= ${t.outDepth}.0 || fract(dyF) > 0.0) {
            continue;
          }
          int idyF = int(dyF);

          int wFPerm = ${e} - 1 - wF;

          for (int wR = 0; wR < ${r}; wR++) {
            float dyR = float(dyRCorner + wR) / ${l}.0;

            if (dyR < 0.0 || dyR >= ${t.outHeight}.0 ||
              fract(dyR) > 0.0) {
              continue;
            }
            int idyR = int(dyR);

            int wRPerm = ${r} - 1 - wR;

            for (int wC = 0; wC < ${s}; wC++) {
              float dyC = float(dyCCorner + wC) / ${h}.0;

              if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                  fract(dyC) > 0.0) {
                continue;
              }
              int idyC = int(dyC);

              int wCPerm = ${s} - 1 - wC;

              for (int d2 = 0; d2 < ${t.outChannels}; d2++) {
                float xValue = getDy(batch, idyF, idyR, idyC, d2);
                float wValue = getW(wFPerm, wRPerm, wCPerm, d1, d2);
                dotProd += xValue * wValue;
              }
            }
          }
        }
        setOutput(dotProd);
      }
    `}}class bY{constructor(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;let e=t.strideHeight,r=t.strideWidth,s=t.padInfo.top,u=t.padInfo.left,l=t.outChannels/t.inChannels;this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int wR = coords.x;
        int wC = coords.y;
        int d1 = coords.z;
        int dm = coords.w;
        int d2 = d1 * ${l} + dm;

        float dotProd = 0.0;

        // TO DO: Vec4 over the batch size
        for (int b = 0; b < ${t.batchSize}; b++) {
          for (int yR = 0; yR < ${t.outHeight}; yR++) {
            int xR = wR + yR * ${e} - ${s};

            if (xR < 0 || xR >= ${t.inHeight}) {
              continue;
            }

            for (int yC = 0; yC < ${t.outWidth}; yC++) {
              int xC = wC + yC * ${r} - ${u};

              if (xC < 0 || xC >= ${t.inWidth}) {
                continue;
              }

              float dyValue = getDy(b, yR, yC, d2);
              float xValue = getX(b, xR, xC, d1);
              dotProd += (xValue * dyValue);
            }
          }
        }
        setOutput(dotProd);
      }
    `}}class wY{constructor(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;let e=t.filterHeight,r=t.filterWidth,s=t.strideHeight,u=t.strideWidth,l=e-1-t.padInfo.top,h=r-1-t.padInfo.left,p=t.outChannels/t.inChannels;this.userCode=`
      const ivec2 pads = ivec2(${l}, ${h});

      void main() {
        ivec4 coords = getOutputCoords();
        int batch = coords[0];
        int d1 = coords[3];
        ivec2 dyCorner = coords.yz - pads;
        int dyRCorner = dyCorner.x;
        int dyCCorner = dyCorner.y;

        float dotProd = 0.0;

        for (int wR = 0; wR < ${e}; wR++) {
          float dyR = float(dyRCorner + wR) / ${s}.0;

          if (dyR < 0.0 || dyR >= ${t.outHeight}.0 || fract(dyR) > 0.0) {
            continue;
          }
          int idyR = int(dyR);

          int wRPerm = ${e} - 1 - wR;

          for (int wC = 0; wC < ${r}; wC++) {
            float dyC = float(dyCCorner + wC) / ${u}.0;

            if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                fract(dyC) > 0.0) {
              continue;
            }
            int idyC = int(dyC);

            int wCPerm = ${r} - 1 - wC;

            // TO DO: Vec4 over the channelMul
            for (int dm = 0; dm < ${p}; dm++) {
              int d2 = d1 * ${p} + dm;
              float xValue = getDy(batch, idyR, idyC, d2);
              float wValue = getW(wRPerm, wCPerm, d1, dm);
              dotProd += xValue * wValue;
            }
          }
        }
        setOutput(dotProd);
      }
    `}}class YE{constructor(t,e=!1,r=null,s=!1){this.variableNames=["x","W"],this.outputShape=t.outShape;let u=t.padInfo.top,l=t.padInfo.left,h=t.strideHeight,p=t.strideWidth,m=t.dilationHeight,y=t.dilationWidth,b=t.filterHeight,x=t.filterWidth,S=Math.floor(t.inChannels/4)*4,C=t.inChannels%4,I=t.dataFormat==="channelsLast",D=I?1:2,R=I?2:3,A=I?3:1,L="",_="";r&&(s?L=`float activation(float a) {
          float b = getPreluActivationWeightsAtOutCoords();
          ${r}
        }`:L=`
          float activation(float x) {
            ${r}
          }
        `,_="result = activation(result);");let B=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),s&&this.variableNames.push("preluActivationWeights"),this.userCode=`
      ${L}

      const ivec2 strides = ivec2(${h}, ${p});
      const ivec2 pads = ivec2(${u}, ${l});

      void main() {
        ivec4 coords = getOutputCoords();
        int batch = coords[0];
        int d2 = coords[${A}];

        ivec2 xRCCorner =
            ivec2(coords[${D}], coords[${R}]) * strides - pads;
        int xRCorner = xRCCorner.x;
        int xCCorner = xRCCorner.y;

        // Convolve x(?, ?, d1) with w(:, :, d1, d2) to get y(yR, yC, d2).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;
        for (int wR = 0; wR < ${b}; wR++) {
          int xR = xRCorner + wR * ${m};

          if (xR < 0 || xR >= ${t.inHeight}) {
            continue;
          }

          for (int wC = 0; wC < ${x}; wC++) {
            int xC = xCCorner + wC * ${y};

            if (xC < 0 || xC >= ${t.inWidth}) {
              continue;
            }

            for (int d1 = 0; d1 < ${S}; d1 += 4) {
              vec4 wValues = vec4(
                getW(wR, wC, d1, d2),
                getW(wR, wC, d1 + 1, d2),
                getW(wR, wC, d1 + 2, d2),
                getW(wR, wC, d1 + 3, d2)
              );

              if (${I}) {
                vec4 xValues = vec4(
                  getX(batch, xR, xC, d1),
                  getX(batch, xR, xC, d1 + 1),
                  getX(batch, xR, xC, d1 + 2),
                  getX(batch, xR, xC, d1 + 3)
                );
                dotProd += dot(xValues, wValues);
              } else {
                vec4 xValues = vec4(
                  getX(batch, d1, xR, xC),
                  getX(batch, d1 + 1, xR, xC),
                  getX(batch, d1 + 2, xR, xC),
                  getX(batch, d1 + 3, xR, xC)
                );
                dotProd += dot(xValues, wValues);
              }
            }

            if (${C===1}) {

              if (${I}) {
                dotProd +=
                    getX(batch, xR, xC, ${S}) *
                    getW(wR, wC, ${S}, d2);
              } else {
                dotProd +=
                    getX(batch, ${S}, xR, xC) *
                    getW(wR, wC, ${S}, d2);
              }

            } else if (${C===2}) {
              vec2 wValues = vec2(
                getW(wR, wC, ${S}, d2),
                getW(wR, wC, ${S} + 1, d2)
              );

              if (${I}) {
                vec2 xValues = vec2(
                  getX(batch, xR, xC, ${S}),
                  getX(batch, xR, xC, ${S} + 1)
                );
                dotProd += dot(xValues, wValues);
              } else {
                vec2 xValues = vec2(
                  getX(batch, ${S}, xR, xC),
                  getX(batch, ${S} + 1, xR, xC)
                );
                dotProd += dot(xValues, wValues);
              }

            } else if (${C===3}) {
              vec3 wValues = vec3(
                getW(wR, wC, ${S}, d2),
                getW(wR, wC, ${S} + 1, d2),
                getW(wR, wC, ${S} + 2, d2)
              );

              if (${I}) {
                vec3 xValues = vec3(
                  getX(batch, xR, xC, ${S}),
                  getX(batch, xR, xC, ${S} + 1),
                  getX(batch, xR, xC, ${S} + 2)
                );
                dotProd += dot(xValues, wValues);
              } else {
                vec3 xValues = vec3(
                  getX(batch, ${S}, xR, xC),
                  getX(batch, ${S} + 1, xR, xC),
                  getX(batch, ${S} + 2, xR, xC)
                );
                dotProd += dot(xValues, wValues);
              }

            }
          }
        }

        float result = dotProd;
        ${B}
        ${_}
        setOutput(result);
      }
    `}}class xY{constructor(t){this.variableNames=["x","W"],this.outputShape=t.outShape;let e=t.padInfo.front,r=t.padInfo.top,s=t.padInfo.left,u=t.strideDepth,l=t.strideHeight,h=t.strideWidth,p=t.dilationDepth,m=t.dilationHeight,y=t.dilationWidth,b=t.filterDepth,x=t.filterHeight,S=t.filterWidth,C=Math.floor(t.inChannels/4)*4,I=t.inChannels%4;this.userCode=`
      const ivec3 strides = ivec3(${u}, ${l}, ${h});
      const ivec3 pads = ivec3(${e}, ${r}, ${s});

      void main() {
        ivec5 coords = getOutputCoords();
        int batch = coords.x;
        int d2 = coords.u;

        ivec3 xFRCCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;
        int xFCorner = xFRCCorner.x;
        int xRCorner = xFRCCorner.y;
        int xCCorner = xFRCCorner.z;

        // Convolve x(?, ?, ?, d1) with w(:, :, :, d1, d2) to get
        // y(yF, yR, yC, d2). ? = to be determined. : = across all
        // values in that axis.
        float dotProd = 0.0;
        for (int wF = 0; wF < ${b}; wF++) {
          int xF = xFCorner + wF * ${p};

          if (xF < 0 || xF >= ${t.inDepth}) {
            continue;
          }

          for (int wR = 0; wR < ${x}; wR++) {
            int xR = xRCorner + wR * ${m};

            if (xR < 0 || xR >= ${t.inHeight}) {
              continue;
            }

            for (int wC = 0; wC < ${S}; wC++) {
              int xC = xCCorner + wC * ${y};

              if (xC < 0 || xC >= ${t.inWidth}) {
                continue;
              }

              for (int d1 = 0; d1 < ${C}; d1 += 4) {
                vec4 xValues = vec4(
                  getX(batch, xF, xR, xC, d1),
                  getX(batch, xF, xR, xC, d1 + 1),
                  getX(batch, xF, xR, xC, d1 + 2),
                  getX(batch, xF, xR, xC, d1 + 3)
                );
                vec4 wValues = vec4(
                  getW(wF, wR, wC, d1, d2),
                  getW(wF, wR, wC, d1 + 1, d2),
                  getW(wF, wR, wC, d1 + 2, d2),
                  getW(wF, wR, wC, d1 + 3, d2)
                );

                dotProd += dot(xValues, wValues);
              }

              if (${I===1}) {
                dotProd +=
                  getX(batch, xF, xR, xC, ${C}) *
                  getW(wF, wR, wC, ${C}, d2);
              } else if (${I===2}) {
                vec2 xValues = vec2(
                  getX(batch, xF, xR, xC, ${C}),
                  getX(batch, xF, xR, xC, ${C} + 1)
                );
                vec2 wValues = vec2(
                  getW(wF, wR, wC, ${C}, d2),
                  getW(wF, wR, wC, ${C} + 1, d2)
                );
                dotProd += dot(xValues, wValues);
              } else if (${I===3}) {
                vec3 xValues = vec3(
                  getX(batch, xF, xR, xC, ${C}),
                  getX(batch, xF, xR, xC, ${C} + 1),
                  getX(batch, xF, xR, xC, ${C} + 2)
                );
                vec3 wValues = vec3(
                  getW(wF, wR, wC, ${C}, d2),
                  getW(wF, wR, wC, ${C} + 1, d2),
                  getW(wF, wR, wC, ${C} + 2, d2)
                );
                dotProd += dot(xValues, wValues);
              }
            }
          }
        }
        setOutput(dotProd);
      }
    `}}class JE{constructor(t,e=!1,r=null,s=!1){this.variableNames=["x","W"],this.outputShape=t.outShape;let u=t.inHeight,l=t.inWidth,h=t.padInfo.top,p=t.padInfo.left,m=t.strideHeight,y=t.strideWidth,b=t.dilationHeight,x=t.dilationWidth,S=t.filterHeight,C=t.filterWidth,I=t.outChannels/t.inChannels,D="",R="";r&&(s?D=`float activation(float a) {
          float b = getPreluActivationWeightsAtOutCoords();
          ${r}
        }`:D=`
          float activation(float x) {
            ${r}
          }
        `,R="result = activation(result);");let A=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),s&&this.variableNames.push("preluActivationWeights"),this.userCode=`
      ${D}

      const ivec2 strides = ivec2(${m}, ${y});
      const ivec2 pads = ivec2(${h}, ${p});

      void main() {
        ivec4 coords = getOutputCoords();
        int batch = coords.x;
        ivec2 xRCCorner = coords.yz * strides - pads;
        int d2 = coords.w;
        int d1 = d2 / ${I};
        int q = d2 - d1 * ${I};

        int xRCorner = xRCCorner.x;
        int xCCorner = xRCCorner.y;

        // Convolve x(?, ?, d1) with w(:, :, d1, q) to get y(yR, yC, d2).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;
        // TO DO(dsmilkov): Flatten the two for loops and vec4 the operations.
        for (int wR = 0; wR < ${S}; wR++) {
          int xR = xRCorner + wR * ${b};

          if (xR < 0 || xR >= ${u}) {
            continue;
          }

          for (int wC = 0; wC < ${C}; wC++) {
            int xC = xCCorner + wC * ${x};

            if (xC < 0 || xC >= ${l}) {
              continue;
            }

            float xVal = getX(batch, xR, xC, d1);
            float wVal = getW(wR, wC, d1, q);
            dotProd += xVal * wVal;
          }
        }

        float result = dotProd;
        ${A}
        ${R}
        setOutput(result);
      }
    `}}class ZE{constructor(t,e=!1,r=null,s=!1){this.variableNames=["x","W"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t.outShape;let u=t.inHeight,l=t.inWidth,h=t.padInfo.top,p=t.padInfo.left,m=t.strideHeight,y=t.strideWidth,b=t.dilationHeight,x=t.dilationWidth,S=t.filterHeight,C=t.filterWidth,I=C,D="int xR; int xC; int xCOffset;";for(let _=0;_<S;_++)for(let B=0;B<C;B++)D+=`
          vec4 xTexelR${_}C${B*2} = vec4(0.);
          vec4 wR${_}C${B} = vec4(0.);
          vec4 xR${_}C${B} = vec4(0.);`;for(let _=0;_<S;_++)for(let B=0;B<I;B++){let V=B*2;if(D+=`
          xR = xRCorner + ${_*b};
          xC = xCCorner + ${V*x};
        `,y===1){if(V<C&&(p%2===1?D+=`
                xCOffset = xC + 1;
                if(xR >= 0 && xR < ${u} && xCOffset >= 0 && xCOffset < ${l}) {
                  xTexelR${_}C${V} = getX(batch, xR, xCOffset, d1);

                  // Need to manually clear unused channels in case
                  // we're reading from recycled texture.
                  if(xCOffset + 1 >= ${l}) {
                    xTexelR${_}C${V}.zw = vec2(0.);
                  }
                } else {
                  xTexelR${_}C${V} = vec4(0.);
                }

                xCOffset = xC + 1 - 2;
                if(xR >= 0 && xR < ${u} && xCOffset >= 0 && xCOffset < ${l}) {
                  vec4 previous = getX(batch, xR, xCOffset, d1);

                  // Need to manually clear unused channels in case
                  // we're reading from recycled texture.
                  if(xCOffset + 1 >= ${l}) {
                    previous.zw = vec2(0.);
                  }

                  xR${_}C${V} = vec4(previous.zw, xTexelR${_}C${V}.xy);
                } else {
                  xR${_}C${V} = vec4(0, 0, xTexelR${_}C${V}.xy);
                }
              `:D+=`
                if(xR >= 0 && xR < ${u} && xC >= 0 && xC < ${l}) {
                  xTexelR${_}C${V} = getX(batch, xR, xC, d1);
                } else {
                  xTexelR${_}C${V} = vec4(0.);
                }

                xR${_}C${V} = xTexelR${_}C${V};
              `,V+1<C)){let q=p%2===0?w(x):x;x%2===0&&p%2===1||x%2!==0&&p%2!==1?(D+=`
                  xCOffset = xC + ${p%2} + ${q};

                  if(xR >= 0 && xR < ${u} &&
                    xCOffset >= 0 && xCOffset < ${l}) {
                    xTexelR${_}C${V+2} = getX(batch, xR, xCOffset, d1);
                  }
                `,x>1&&(D+=`
                    xCOffset -= 2;
                    if(xR >= 0 && xR < ${u} &&
                      xCOffset >= 0 && xCOffset < ${l}) {
                      xTexelR${_}C${V} = getX(batch, xR, xCOffset, d1);
                    } else {
                      xTexelR${_}C${V} = vec4(0.);
                    }
                  `),D+=`
                  xR${_}C${V+1} = vec4(
                    xTexelR${_}C${V}.zw, xTexelR${_}C${V+2}.xy);
                `):D+=`
                  xCOffset = xC + ${q};

                  if(xR >= 0 && xR < ${u} &&
                    xCOffset >= 0 && xCOffset < ${l}) {
                    xTexelR${_}C${V+2} = getX(batch, xR, xCOffset, d1);
                  }

                  xR${_}C${V+1} = xTexelR${_}C${V+2};
                `}}else V<C&&(D+=`
              if(xR >= 0 && xR < ${u}) {
            `,p%2===1?(D+=`
                xCOffset = xC + 1 - ${y};
                if(xCOffset >= 0 && xCOffset < ${l}) {
                  xTexelR${_}C${V} = getX(batch, xR, xCOffset, d1);
                } else {
                  xTexelR${_}C${V} = vec4(0.);
                }

                if(xC + 1 >= 0 && xC + 1 < ${l}) {
                  xTexelR${_}C${V+2} = getX(batch, xR, xC + 1, d1);
                } else {
                  xTexelR${_}C${V+2} = vec4(0.);
                }

                xR${_}C${V} = vec4(
                  xTexelR${_}C${V}.zw, xTexelR${_}C${V+2}.zw);
              `,V+1<C&&(D+=`
                  vec4 final = vec4(0.);
                  xCOffset = xC + 1 + ${y};
                  if(xCOffset >= 0 && xCOffset < ${l}) {
                    final = getX(batch, xR, xCOffset, d1);
                  }
                  xR${_}C${V+1} = vec4(xTexelR${_}C${V+2}.xy, final.xy);
                `)):(D+=`
                if(xC >= 0 && xC < ${l}) {
                  xTexelR${_}C${V} = getX(batch, xR, xC, d1);
                } else {
                  xTexelR${_}C${V} = vec4(0.);
                }

                xCOffset = xC + ${y};
                if(xCOffset >= 0 && xCOffset < ${l}) {
                  xTexelR${_}C${V+2} = getX(batch, xR, xCOffset, d1);
                } else {
                  xTexelR${_}C${V+2} = vec4(0.);
                }

                xR${_}C${V} = vec4(
                  xTexelR${_}C${V}.xy, xTexelR${_}C${V+2}.xy);
              `,V+1<C&&(D+=`
                  xR${_}C${V+1} = vec4(
                    xTexelR${_}C${V}.zw, xTexelR${_}C${V+2}.zw);
                `)),D+="}");V<C&&(D+=`
            vec4 wTexelR${_}C${V} = getW(${_}, ${V}, d1, q);
            wR${_}C${V} = vec4(wTexelR${_}C${V}.xz, wTexelR${_}C${V}.xz);
          `,V+1<C&&(D+=`
              vec4 wTexelR${_}C${V+1} = getW(${_}, ${V+1}, d1, q);
              wR${_}C${V+1} =
                vec4(wTexelR${_}C${V+1}.xz, wTexelR${_}C${V+1}.xz);`))}for(let _=0;_<S;_++)for(let B=0;B<C;B++)D+=`dotProd += xR${_}C${B} * wR${_}C${B};`;let R="",A="";r&&(s?R=`vec4 activation(vec4 a) {
          vec4 b = getPreluActivationWeightsAtOutCoords();
          ${r}
        }`:R=`vec4 activation(vec4 x) {
          ${r}
        }`,A="result = activation(result);");let L=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),s&&this.variableNames.push("preluActivationWeights"),this.userCode=`
      ${R}

      const ivec2 strides = ivec2(${m}, ${y});
      const ivec2 pads = ivec2(${h}, ${p});

      void main() {

        ivec4 coords = getOutputCoords();
        int batch = coords.x;
        ivec2 xRCCorner = coords.yz * strides - pads;
        int d2 = coords.w;
        int d1 = d2;
        int q = 0;
        int xRCorner = xRCCorner.x;
        int xCCorner = xRCCorner.y;

        vec4 dotProd = vec4(0.);

        ${D}

        vec4 result = dotProd;
        ${L}
        ${A}
        setOutput(result);
      }
    `}}class TY{constructor(t,e,r,s,u){this.variableNames=["Image","Boxes","BoxInd"],this.outputShape=[];let[l,h,p,m]=t,[y]=e,[b,x]=r;this.outputShape=[y,b,x,m];let S=s==="bilinear"?1:0,[C,I]=[`${h-1}.0`,`${p-1}.0`],[D,R,A]=b>1?[`${(h-1)/(b-1)}`,"(y2-y1) * height_ratio",`y1*${C} + float(y)*(height_scale)`]:["0.0","0.0",`0.5 * (y1+y2) * ${C}`],[L,_,B]=x>1?[`${(p-1)/(x-1)}`,"(x2-x1) * width_ratio",`x1*${I} + float(x)*(width_scale)`]:["0.0","0.0",`0.5 * (x1+x2) * ${I}`];this.userCode=`
      const float height_ratio = float(${D});
      const float width_ratio = float(${L});
      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int y = coords[1];
        int x = coords[2];
        int d = coords[3];

        // get box vals
        float y1 = getBoxes(b,0);
        float x1 = getBoxes(b,1);
        float y2 = getBoxes(b,2);
        float x2 = getBoxes(b,3);

        // get image in batch index
        int bInd = round(getBoxInd(b));
        if(bInd < 0 || bInd >= ${l}) {
          return;
        }

        float height_scale = ${R};
        float width_scale = ${_};

        float in_y = ${A};
        if( in_y < 0.0 || in_y > ${C} ) {
          setOutput(float(${u}));
          return;
        }
        float in_x = ${B};
        if( in_x < 0.0 || in_x > ${I} ) {
          setOutput(float(${u}));
          return;
        }

        vec2 sourceFracIndexCR = vec2(in_x,in_y);
        if(${S} == 1) {
          // Compute the four integer indices.
          ivec2 sourceFloorCR = ivec2(sourceFracIndexCR);
          ivec2 sourceCeilCR = ivec2(ceil(sourceFracIndexCR));

          float topLeft = getImage(b, sourceFloorCR.y, sourceFloorCR.x, d);
          float bottomLeft = getImage(b, sourceCeilCR.y, sourceFloorCR.x, d);
          float topRight = getImage(b, sourceFloorCR.y, sourceCeilCR.x, d);
          float bottomRight = getImage(b, sourceCeilCR.y, sourceCeilCR.x, d);

          vec2 fracCR = sourceFracIndexCR - vec2(sourceFloorCR);

          float top = topLeft + (topRight - topLeft) * fracCR.x;
          float bottom = bottomLeft + (bottomRight - bottomLeft) * fracCR.x;
          float newValue = top + (bottom - top) * fracCR.y;
          setOutput(newValue);
        } else {
          // Compute the coordinators of nearest neighbor point.
          ivec2 sourceNearestCR = ivec2(floor(
            sourceFracIndexCR + vec2(0.5,0.5)));
          float newValue = getImage(b, sourceNearestCR.y, sourceNearestCR.x, d);
          setOutput(newValue);
        }
      }
    `}}class QE{constructor(t,e,r){this.variableNames=["x"],this.outputShape=t;let s=t.length,u=e?"0.0":`getX(${tD(s,"coords")})`,l=t[t.length-1],h="",p="";e?(h=r?`end != ${l-1}`:"end != 0",p=r?"end + 1":"end - 1"):(h=r?`end + pow2 < ${l}`:"end >= pow2",p=r?"end + pow2":"end - pow2"),this.userCode=`
      uniform float index;
      void main() {
        ${We(s)} coords = getOutputCoords();
        int end = ${eD(s,"coords")};
        float val = ${u};
        int pow2 = int(pow(2.0, index));
        if (${h}) {
          int idx = ${p};
          ${eD(s,"coords")} = idx;
          val += getX(${tD(s,"coords")});
        }
        setOutput(val);
      }
    `}getCustomSetupFunc(t){return(e,r)=>{this.index==null&&(this.index=e.getUniformLocation(r,"index")),e.gl.uniform1f(this.index,t)}}}function tD(n,t){if(n===1)return`${t}`;if(n===2)return`${t}.x, ${t}.y`;if(n===3)return`${t}.x, ${t}.y, ${t}.z`;if(n===4)return`${t}.x, ${t}.y, ${t}.z, ${t}.w`;throw Error(`Cumulative sum for rank ${n} is not yet supported`)}function eD(n,t){if(n===1)return`${t}`;if(n===2)return`${t}.y`;if(n===3)return`${t}.z`;if(n===4)return`${t}.w`;throw Error(`Cumulative sum for rank ${n} is not yet supported`)}class kY{constructor(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0,this.outPackingScheme=gf.DENSE;let e=yf(t),r=rr();this.outputShape=t,this.userCode=`
      ivec3 outCoordsFromFlatIndex(int index) {
        ${$i(["r","c","d"],t)}
        return ivec3(r, c, d);
      }

      void main() {
        ivec2 resTexRC = ivec2(resultUV.yx *
          vec2(${e[0]}, ${e[1]}));
        int index = 4 * (resTexRC.x * ${e[1]} + resTexRC.y);

        vec4 result = vec4(0.);

        for (int i=0; i<4; i++) {
          int flatIndex = index + i;
          ivec3 rc = outCoordsFromFlatIndex(flatIndex);
          result[i] = getA(rc.x, rc.y, rc.z);
        }

        ${r.output} = result;
      }
    `}}class SY{constructor(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outPackingScheme=gf.DENSE;let e=yf(t),r=rr();this.outputShape=t,this.userCode=`
      ivec3 outCoordsFromFlatIndex(int index) {
        ${$i(["r","c","d"],t)}
        return ivec3(r, c, d);
      }

      void main() {
        ivec2 resTexRC = ivec2(resultUV.yx *
          vec2(${e[0]}, ${e[1]}));
        int index = 4 * (resTexRC.x * ${e[1]} + resTexRC.y);

        vec4 result = vec4(0.);

        for (int i=0; i<4; i++) {
          int flatIndex = index + i;
          ivec3 rc = outCoordsFromFlatIndex(flatIndex);
          result[i] = getChannel(getA(rc.x, rc.y, rc.z), vec2(rc.y, rc.z));
        }

        ${r.output} = result;
      }
    `}}class CY{constructor(t,e,r){this.variableNames=["x"],this.outputShape=[],this.outputShape=t,this.blockSize=e,this.dataFormat=r,this.userCode=`
    void main() {
      ivec4 coords = getOutputCoords();
      int b = coords[0];
      int h = ${this.getHeightCoordString()};
      int w = ${this.getWidthCoordString()};
      int d = ${this.getDepthCoordString()};

      int in_h = h / ${e};
      int offset_h = imod(h, ${e});
      int in_w = w / ${e};
      int offset_w = imod(w, ${e});
      int offset_d = (offset_h * ${e} + offset_w) *
        ${this.getOutputDepthSize()};
      int in_d = d + offset_d;

      float result = ${this.getInputSamplingString()};
      setOutput(result);
    }
  `}getHeightCoordString(){return this.dataFormat==="NHWC"?"coords[1]":"coords[2]"}getWidthCoordString(){return this.dataFormat==="NHWC"?"coords[2]":"coords[3]"}getDepthCoordString(){return this.dataFormat==="NHWC"?"coords[3]":"coords[1]"}getOutputDepthSize(){return this.dataFormat==="NHWC"?this.outputShape[3]:this.outputShape[1]}getInputSamplingString(){return this.dataFormat==="NHWC"?"getX(b, in_h, in_w, in_d)":"getX(b, in_d, in_h, in_w)"}}class NY{constructor(t){this.variableNames=["X"],this.outputShape=[t,t],this.userCode=`
      void main() {
          ivec2 coords = getOutputCoords();
          float val = coords[0] == coords[1] ? getX(coords[0]) : 0.0;
          setOutput(val);
      }
    `}}class IY{constructor(t){this.variableNames=["A"],this.outTexUsage=Hr.DOWNLOAD;let e=rr();this.outputShape=t,this.userCode=`
      ${UE}

      void main() {
        float x = getAAtOutCoords();
        ${e.output} = encode_float(x);
      }
    `}}class EY{constructor(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!1,this.outTexUsage=Hr.DOWNLOAD;let e=rr();this.outputShape=t,this.userCode=`
      ${UE}

      void main() {
        ivec3 coords = getOutputCoords();
        float x = getChannel(getAAtOutCoords(), vec2(coords.y, coords.z));
        ${e.output} = encode_float(x);
      }
    `}}class DY{constructor(t,e,r=!1){this.variableNames=["A"];let s=rr(),[u,l]=e;this.outputShape=t;let h="result";r&&(h="floor(result * 255. + 0.5)"),this.userCode=`
      ${ux(t)}

      void main() {
        ivec3 coords = getOutputCoords();

        int flatIndex = getFlatIndex(coords);
        int offset = imod(flatIndex, 4);

        flatIndex = idiv(flatIndex, 4, 1.);

        int r = flatIndex / ${l};
        int c = imod(flatIndex, ${l});
        vec2 uv = (vec2(c, r) + halfCR) / vec2(${l}.0, ${u}.0);
        vec4 values = ${s.texture2D}(A, uv);

        float result;

        if(offset == 0) {
          result = values[0];
        } else if(offset == 1) {
          result = values[1];
        } else if(offset == 2) {
          result = values[2];
        } else {
          result = values[3];
        }

        ${s.output} = vec4(${h}, 0., 0., 0.);
      }
    `}}class $Y{constructor(t,e,r=!1){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0;let s=rr(),[u,l]=e;this.outputShape=t;let h="",p="result";r&&(p="floor(result * 255. + 0.5)");for(let m=0;m<=1;m++)for(let y=0;y<=1;y++){let b=m*2+y;h+=`
          localCoords = coords;
          if(localCoords[2] + ${y} < ${t[2]}) {
            localCoords[2] += ${y};
            if(localCoords[1] + ${m} < ${t[1]}) {
              localCoords[1] += ${m};

              flatIndex = getFlatIndex(localCoords);
              offset = imod(flatIndex, 4);

              flatIndex = idiv(flatIndex, 4, 1.);

              r = flatIndex / ${l};
              c = imod(flatIndex, ${l});
              uv = (vec2(c, r) + halfCR) / vec2(${l}.0, ${u}.0);
              values = ${s.texture2D}(A, uv);

              if(offset == 0) {
                result[${b}] = values[0];
              } else if(offset == 1) {
                result[${b}] = values[1];
              } else if(offset == 2) {
                result[${b}] = values[2];
              } else {
                result[${b}] = values[3];
              }
            }
          }
        `}this.userCode=`
      ${ux(t)}

      void main() {
        ivec3 coords = getOutputCoords();

        vec4 result = vec4(0.);
        int flatIndex, r, c, offset;
        ivec3 localCoords;
        vec2 uv;
        vec4 values;

        ${h}

        ${s.output} = ${p};
      }
    `}}class AY{constructor(t,e){this.outputShape=[],this.variableNames=["x"],this.outputShape=t,this.userCode=`
      uniform float value;
      void main() {
        // Input can be obtained from uniform value.
        setOutput(value);
      }
    `}getCustomSetupFunc(t){return(e,r)=>{this.valueLoc==null&&(this.valueLoc=e.getUniformLocationNoThrow(r,"value")),e.gl.uniform1f(this.valueLoc,t)}}}class _Y{constructor(t,e,r){this.variableNames=["A","indices"];let s=t.slice();s[r]=e,this.outputShape=s,this.rank=s.length;let u=We(this.rank),l=FY(t,r);this.userCode=`
      void main() {
        ${u} resRC = getOutputCoords();
        setOutput(getA(${l}));
      }
    `}}function FY(n,t){let e=n.length;if(e>4)throw Error(`Gather for rank ${e} is not yet supported`);if(e===1)return"int(getIndices(resRC))";let r=["resRC.x","resRC.y","resRC.z","resRC.w"],s=[];for(let u=0;u<n.length;u++)u===t?s.push(`int(getIndices(${r[u]}))`):s.push(`${r[u]}`);return s.join()}class RY{constructor(t,e,r){this.sliceDim=t,this.strides=e,this.variableNames=["x","indices"],this.outputShape=r;let s=We(e.length),u=We(r.length),l=this.sliceDim>1?"strides[j]":"strides";this.userCode=`
        ${s} strides = ${s}(${this.strides});
         void main() {
          ${u} coords = getOutputCoords();
          int flattenIndex = 0;
          for (int j = 0; j < ${this.sliceDim}; j++) {
            int index = round(getIndices(coords[0], j));
            flattenIndex += index * ${l};
          }
          setOutput(getX(flattenIndex, coords[1]));
        }
      `}}function PY(n){let t=rr(),e=`${t.version}
    precision highp float;
    ${t.attribute} vec3 clipSpacePos;
    ${t.attribute} vec2 uv;
    ${t.varyingVs} vec2 resultUV;

    void main() {
      gl_Position = vec4(clipSpacePos, 1);
      resultUV = uv;
    }`;return d8(n,e)}function OY(n){let t=new Float32Array([-1,1,0,0,1,-1,-1,0,0,0,1,1,0,1,1,1,-1,0,1,0]);return w8(n,t)}function MY(n){let t=new Uint16Array([0,1,2,2,1,3]);return x8(n,t)}function wf(n,t,e,r,s,u){k8(t,e);let l=T8(n),h=n.TEXTURE_2D;return zt(n,()=>n.bindTexture(h,l)),zt(n,()=>n.texParameteri(h,n.TEXTURE_WRAP_S,n.CLAMP_TO_EDGE)),zt(n,()=>n.texParameteri(h,n.TEXTURE_WRAP_T,n.CLAMP_TO_EDGE)),zt(n,()=>n.texParameteri(h,n.TEXTURE_MIN_FILTER,n.NEAREST)),zt(n,()=>n.texParameteri(h,n.TEXTURE_MAG_FILTER,n.NEAREST)),zt(n,()=>n.texImage2D(h,0,r,t,e,0,s,u,null)),zt(n,()=>n.bindTexture(n.TEXTURE_2D,null)),l}function nD(n){return n.internalFormatFloat}function LY(n,t,e,r){let[s,u]=vf(t,e);return wf(n,s,u,nD(r),r.textureFormatFloat,n.FLOAT)}function rD(n){return n.internalFormatHalfFloat}function BY(n,t,e,r){let[s,u]=vf(t,e);return wf(n,s,u,rD(r),r.textureFormatFloat,r.textureTypeHalfFloat)}function sD(n){return n.downloadTextureFormat}function zY(n,t,e,r){let[s,u]=vf(t,e);return wf(n,s,u,sD(r),n.RGBA,n.UNSIGNED_BYTE)}function oD(n){return n.internalFormatPackedFloat}function WY(n,t,e,r){let[s,u]=ic(t,e);return wf(n,s,u,oD(r),n.RGBA,n.FLOAT)}function aD(n){return n.internalFormatPackedHalfFloat}function VY(n,t,e,r){let[s,u]=ic(t,e);return wf(n,s,u,aD(r),n.RGBA,r.textureTypeHalfFloat)}function UY(n,t,e){let r=0,s=3*4,u=3*4+2*4;zt(n,()=>n.bindBuffer(n.ARRAY_BUFFER,e));let l=LE(n,t,"clipSpacePos",e,3,u,r);return l&&LE(n,t,"uv",e,2,u,s)}function GY(n,t,e,r,s,u){zt(n,()=>n.bindTexture(n.TEXTURE_2D,t));let l,h,p;s instanceof Uint8Array?(l=new Uint8Array(e*r*4),h=n.UNSIGNED_BYTE,p=n.RGBA):(l=new Float32Array(e*r*4),h=n.FLOAT,p=u.internalFormatPackedFloat),l.set(s),zt(n,()=>n.texImage2D(n.TEXTURE_2D,0,p,e,r,0,n.RGBA,h,l)),zt(n,()=>n.bindTexture(n.TEXTURE_2D,null))}function HY(n,t,e){zt(n,()=>n.bindTexture(n.TEXTURE_2D,t)),e.data instanceof Uint8Array?zt(n,()=>n.texImage2D(n.TEXTURE_2D,0,n.RGBA,e.width,e.height,0,n.RGBA,n.UNSIGNED_BYTE,e.data)):zt(n,()=>n.texImage2D(n.TEXTURE_2D,0,n.RGBA,n.RGBA,n.UNSIGNED_BYTE,e)),zt(n,()=>n.bindTexture(n.TEXTURE_2D,null))}function qY(n,t,e,r){let s=n.createBuffer();zt(n,()=>n.bindBuffer(n.PIXEL_PACK_BUFFER,s));let u=4,l=4,h=u*l*t*e;return zt(n,()=>n.bufferData(n.PIXEL_PACK_BUFFER,h,n.STREAM_READ)),zt(n,()=>n.readPixels(0,0,e,t,n.RGBA,n.FLOAT,0)),zt(n,()=>n.bindBuffer(n.PIXEL_PACK_BUFFER,null)),s}function jY(n,t,e){let r=n,s=new Float32Array(e);return r.bindBuffer(r.PIXEL_PACK_BUFFER,t),r.getBufferSubData(r.PIXEL_PACK_BUFFER,0,s),r.bindBuffer(r.PIXEL_PACK_BUFFER,null),s}function KY(n,t,e,r){let[s,u]=vf(t,e),l=4,h=new Uint8Array(i8(t*e,l));return zt(n,()=>n.readPixels(0,0,s,u,r.downloadTextureFormat,n.UNSIGNED_BYTE,h)),new Float32Array(h.buffer)}function XY(n,t,e,r,s,u,l,h){let p=n,m=new Float32Array(u8(u,l));return p.bindBuffer(p.PIXEL_PACK_BUFFER,t),p.getBufferSubData(p.PIXEL_PACK_BUFFER,0,m),p.bindBuffer(p.PIXEL_PACK_BUFFER,null),m}function YY(n,t,e){let r=new Float32Array(t*e*4);return zt(n,()=>n.readPixels(0,0,e,t,n.RGBA,n.FLOAT,r)),r}class JY{constructor(t){this.outputTexture=null,this.program=null,this.disposed=!1,this.vertexAttrsAreBound=!1,this.itemsToPoll=[];let e=ft().getNumber("WEBGL_VERSION");t!=null?(this.gl=t,s8(e,t)):this.gl=eo(e);let r="WEBGL_color_buffer_float",s="EXT_color_buffer_half_float";if(ft().getNumber("WEBGL_VERSION")===1){let u="OES_texture_float",l="OES_texture_half_float";if(this.textureFloatExtension=Mm(this.gl,u),as(this.gl,l))this.textureHalfFloatExtension=Mm(this.gl,l);else if(ft().get("WEBGL_FORCE_F16_TEXTURES"))throw new Error("GL context does not support half float textures, yet the environment flag WEBGL_FORCE_F16_TEXTURES is set to true.");if(this.colorBufferFloatExtension=this.gl.getExtension(r),as(this.gl,s))this.colorBufferHalfFloatExtension=Mm(this.gl,s);else if(ft().get("WEBGL_FORCE_F16_TEXTURES"))throw new Error("GL context does not support color renderable half floats, yet the environment flag WEBGL_FORCE_F16_TEXTURES is set to true.")}else if(r="EXT_color_buffer_float",as(this.gl,r))this.colorBufferFloatExtension=this.gl.getExtension(r);else if(as(this.gl,s))this.colorBufferHalfFloatExtension=this.gl.getExtension(s);else throw new Error("GL context does not support color renderable floats");this.vertexBuffer=OY(this.gl),this.indexBuffer=MY(this.gl),this.framebuffer=S8(this.gl),this.textureConfig=nx(this.gl,this.textureHalfFloatExtension)}get debug(){return ft().getBool("DEBUG")}dispose(){if(this.disposed)return;this.program!=null&&console.warn("Disposing a GPGPUContext that still has a bound WebGLProgram. This is probably a resource leak, delete the program with GPGPUContext.deleteProgram before disposing."),this.outputTexture!=null&&console.warn("Disposing a GPGPUContext that still has a bound output matrix texture.  This is probably a resource leak, delete the output matrix texture with GPGPUContext.deleteMatrixTexture before disposing.");let t=this.gl;zt(t,()=>t.finish()),zt(t,()=>t.bindFramebuffer(t.FRAMEBUFFER,null)),zt(t,()=>t.deleteFramebuffer(this.framebuffer)),zt(t,()=>t.bindBuffer(t.ARRAY_BUFFER,null)),zt(t,()=>t.bindBuffer(t.ELEMENT_ARRAY_BUFFER,null)),zt(t,()=>t.deleteBuffer(this.indexBuffer)),this.disposed=!0}createFloat32MatrixTexture(t,e){return this.throwIfDisposed(),LY(this.gl,t,e,this.textureConfig)}createFloat16MatrixTexture(t,e){return this.throwIfDisposed(),BY(this.gl,t,e,this.textureConfig)}createUnsignedBytesMatrixTexture(t,e){return this.throwIfDisposed(),zY(this.gl,t,e,this.textureConfig)}uploadPixelDataToTexture(t,e){this.throwIfDisposed(),HY(this.gl,t,e)}uploadDenseMatrixToTexture(t,e,r,s){this.throwIfDisposed(),GY(this.gl,t,e,r,s,this.textureConfig)}createFloat16PackedMatrixTexture(t,e){return this.throwIfDisposed(),VY(this.gl,t,e,this.textureConfig)}createPackedMatrixTexture(t,e){return this.throwIfDisposed(),WY(this.gl,t,e,this.textureConfig)}deleteMatrixTexture(t){this.throwIfDisposed(),this.outputTexture===t&&(BE(this.gl,this.framebuffer),this.outputTexture=null),zt(this.gl,()=>this.gl.deleteTexture(t))}downloadByteEncodedFloatMatrixFromOutputTexture(t,e,r){return this.downloadMatrixDriver(t,()=>KY(this.gl,e,r,this.textureConfig))}downloadPackedMatrixFromBuffer(t,e,r,s,u,l){return XY(this.gl,t,e,r,s,u,l,this.textureConfig)}downloadFloat32MatrixFromBuffer(t,e){return jY(this.gl,t,e)}createBufferFromTexture(t,e,r){this.bindTextureToFrameBuffer(t);let s=qY(this.gl,e,r,this.textureConfig);return this.unbindTextureToFrameBuffer(),s}createAndWaitForFence(){let t=this.createFence(this.gl);return this.pollFence(t)}createFence(t){let e,r;if(ft().getBool("WEBGL_FENCE_API_ENABLED")){let s=t,u=s.fenceSync(s.SYNC_GPU_COMMANDS_COMPLETE,0);t.flush(),r=()=>{let l=s.clientWaitSync(u,0,0);return l===s.ALREADY_SIGNALED||l===s.CONDITION_SATISFIED},e=u}else ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?(e=this.beginQuery(),this.endQuery(),r=()=>this.isQueryAvailable(e,ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))):r=()=>!0;return{query:e,isFencePassed:r}}downloadMatrixFromPackedTexture(t,e,r){return this.downloadMatrixDriver(t,()=>YY(this.gl,e,r))}createProgram(t){this.throwIfDisposed();let e=this.gl,r=m8(e,t),s=PY(e),u=y8(e);return zt(e,()=>e.attachShader(u,s)),zt(e,()=>e.attachShader(u,r)),b8(e,u),this.debug&&rx(e,u),this.vertexAttrsAreBound||(this.setProgram(u),this.vertexAttrsAreBound=UY(e,this.program,this.vertexBuffer)),u}deleteProgram(t){this.throwIfDisposed(),t===this.program&&(this.program=null),t!=null&&zt(this.gl,()=>this.gl.deleteProgram(t))}setProgram(t){this.throwIfDisposed(),this.program=t,this.program!=null&&this.debug&&rx(this.gl,this.program),zt(this.gl,()=>this.gl.useProgram(t))}getUniformLocation(t,e,r=!0){return this.throwIfDisposed(),r?N8(this.gl,t,e):I8(this.gl,t,e)}getAttributeLocation(t,e){return this.throwIfDisposed(),zt(this.gl,()=>this.gl.getAttribLocation(t,e))}getUniformLocationNoThrow(t,e){return this.throwIfDisposed(),this.gl.getUniformLocation(t,e)}setInputMatrixTexture(t,e,r){this.throwIfDisposed(),this.throwIfNoProgram(),E8(this.gl,t,e,r)}setOutputMatrixTexture(t,e,r){this.setOutputMatrixTextureDriver(t,r,e)}setOutputPackedMatrixTexture(t,e,r){this.throwIfDisposed();let[s,u]=ic(e,r);this.setOutputMatrixTextureDriver(t,s,u)}setOutputMatrixWriteRegion(t,e,r,s){this.setOutputMatrixWriteRegionDriver(r,t,s,e)}setOutputPackedMatrixWriteRegion(t,e,r,s){throw new Error("setOutputPackedMatrixWriteRegion not implemented.")}debugValidate(){this.program!=null&&rx(this.gl,this.program),Lm(this.gl)}executeProgram(){this.throwIfDisposed(),this.throwIfNoProgram();let t=this.gl;this.debug&&this.debugValidate(),zt(t,()=>t.drawElements(t.TRIANGLES,6,t.UNSIGNED_SHORT,0))}blockUntilAllProgramsCompleted(){this.throwIfDisposed(),zt(this.gl,()=>this.gl.finish())}getQueryTimerExtension(){return this.disjointQueryTimerExtension==null&&(this.disjointQueryTimerExtension=Mm(this.gl,ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")===2?"EXT_disjoint_timer_query_webgl2":"EXT_disjoint_timer_query")),this.disjointQueryTimerExtension}getQueryTimerExtensionWebGL2(){return this.getQueryTimerExtension()}getQueryTimerExtensionWebGL1(){return this.getQueryTimerExtension()}beginQuery(){if(ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")===2){let r=this.gl,s=this.getQueryTimerExtensionWebGL2(),u=r.createQuery();return r.beginQuery(s.TIME_ELAPSED_EXT,u),u}let t=this.getQueryTimerExtensionWebGL1(),e=t.createQueryEXT();return t.beginQueryEXT(t.TIME_ELAPSED_EXT,e),e}endQuery(){if(ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")===2){let e=this.gl,r=this.getQueryTimerExtensionWebGL2();e.endQuery(r.TIME_ELAPSED_EXT);return}let t=this.getQueryTimerExtensionWebGL1();t.endQueryEXT(t.TIME_ELAPSED_EXT)}async waitForQueryAndGetTime(t){return await It(()=>this.disposed||this.isQueryAvailable(t,ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))),this.getQueryTime(t,ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))}getQueryTime(t,e){if(e===0)return null;if(e===2){let r=this.gl,s=r.getQueryParameter(t,r.QUERY_RESULT);return s/1e6}else{let r=this.getQueryTimerExtensionWebGL1(),s=r.getQueryObjectEXT(t,r.QUERY_RESULT_EXT);return s/1e6}}isQueryAvailable(t,e){if(e===0)return!0;if(e===2){let r=this.gl,s=this.getQueryTimerExtensionWebGL2(),u=r.getQueryParameter(t,r.QUERY_RESULT_AVAILABLE);return this.disjoint==null&&(this.disjoint=this.gl.getParameter(s.GPU_DISJOINT_EXT)),u&&!this.disjoint}else{let r=this.getQueryTimerExtensionWebGL1(),s=r.getQueryObjectEXT(t,r.QUERY_RESULT_AVAILABLE_EXT);return this.disjoint==null&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),s&&!this.disjoint}}pollFence(t){return new Promise(e=>{this.addItemToPoll(()=>t.isFencePassed(),()=>e())})}pollItems(){let t=ZY(this.itemsToPoll.map(e=>e.isDoneFn));for(let e=0;e<=t;++e){let{resolveFn:r}=this.itemsToPoll[e];r()}this.itemsToPoll=this.itemsToPoll.slice(t+1)}addItemToPoll(t,e){if(this.itemsToPoll.push({isDoneFn:t,resolveFn:e}),this.itemsToPoll.length>1)return;It(()=>(this.pollItems(),this.itemsToPoll.length===0))}bindTextureToFrameBuffer(t){this.throwIfDisposed(),sx(this.gl,t,this.framebuffer),this.debug&&Lm(this.gl)}unbindTextureToFrameBuffer(){this.outputTexture!=null?(sx(this.gl,this.outputTexture,this.framebuffer),this.debug&&Lm(this.gl)):BE(this.gl,this.framebuffer)}downloadMatrixDriver(t,e){this.bindTextureToFrameBuffer(t);let r=e();return this.unbindTextureToFrameBuffer(),r}setOutputMatrixTextureDriver(t,e,r){this.throwIfDisposed();let s=this.gl;sx(s,t,this.framebuffer),this.debug&&Lm(s),this.outputTexture=t,zt(s,()=>s.viewport(0,0,e,r)),zt(s,()=>s.scissor(0,0,e,r))}setOutputMatrixWriteRegionDriver(t,e,r,s){this.throwIfDisposed(),zt(this.gl,()=>this.gl.scissor(t,e,r,s))}throwIfDisposed(){if(this.disposed)throw new Error("Attempted to use disposed GPGPUContext.")}throwIfNoProgram(){if(this.program==null)throw new Error("No GPU program is currently set.")}}function ZY(n){let t=0;for(;t<n.length;++t){let e=n[t]();if(!e)break}return t-1}function QY(n,t,e,r){let s=t.userCode,u=e.map((S,C)=>{let I={logicalShape:S.shape,texShape:S.isUniform?null:S.texData.texShape,isUniform:S.isUniform,isPacked:S.isUniform?!1:S.texData.isPacked,flatOffset:null};return S.texData!=null&&S.texData.slice!=null&&S.texData.slice.flatOffset>0&&(I.flatOffset=S.texData.slice.flatOffset),{name:t.variableNames[C],shapeInfo:I}}),l=u.map(S=>S.shapeInfo),h={logicalShape:r.shape,texShape:r.texData.texShape,isUniform:!1,isPacked:r.texData.isPacked,flatOffset:null},p=eX(u,h,s,t.packedInputs),m=n.createProgram(p),y=null,b=n.getUniformLocation(m,"NAN",!1);ft().getNumber("WEBGL_VERSION")===1&&(y=n.getUniformLocation(m,"INFINITY",!1));let x={};for(let S=0;S<t.variableNames.length;S++){let C=t.variableNames[S],I=!1;x[C]=n.getUniformLocation(m,C,I),x[`offset${C}`]=n.getUniformLocation(m,`offset${C}`,I)}return{program:t,source:p,webGLProgram:m,uniformLocations:x,inShapeInfos:l,outShapeInfo:h,infLoc:y,nanLoc:b}}function iD(n,t){if(n.length!==t.length)throw Error(`Binary was compiled with ${n.length} inputs, but was executed with ${t.length} inputs`);n.forEach((e,r)=>{let s=e.logicalShape,u=t[r],l=u.shape;if(!K(s,l))throw Error(`Binary was compiled with different shapes than the current args. Shapes ${s} and ${l} must match`);if(e.isUniform&&u.isUniform)return;let h=e.texShape,p=u.isUniform?null:u.texData.texShape;if(!K(h,p))throw Error(`Binary was compiled with different texture shapes than the current args. Shape ${h} and ${p} must match`)})}function t7(n,t,e,r,s){iD(t.inShapeInfos,e),iD([t.outShapeInfo],[r]);let u=r.texData.texture,l=r.texData.texShape;r.texData.isPacked?n.setOutputPackedMatrixTexture(u,l[0],l[1]):n.setOutputMatrixTexture(u,l[0],l[1]),n.setProgram(t.webGLProgram),ft().getNumber("WEBGL_VERSION")===1&&(t.infLoc!==null&&n.gl.uniform1f(t.infLoc,Infinity)),t.nanLoc!==null&&n.gl.uniform1f(t.nanLoc,NaN),e.forEach((h,p)=>{let m=t.program.variableNames[p],y=t.uniformLocations[m],b=t.uniformLocations[`offset${m}`];if(y==null)return;if(h.isUniform){if(O(h.shape)<2)n.gl.uniform1f(y,h.uniformValues[0]);else{let x=h.uniformValues;x instanceof Float32Array||(x=new Float32Array(x)),n.gl.uniform1fv(y,x)}return}h.texData.slice!=null&&b!=null&&n.gl.uniform1i(b,h.texData.slice.flatOffset),n.setInputMatrixTexture(h.texData.texture,y,p)}),s!=null&&s(n,t.webGLProgram),n.executeProgram()}function e7(n,t,e){let r="";t.concat(e).forEach(l=>{let h=l.texData!=null&&l.texData.slice!=null&&l.texData.slice.flatOffset>0,p=l.isUniform?"uniform":l.texData.texShape;r+=`${l.shape}_${p}_${h}`});let s=n.userCode,u=n.constructor.name;return u+="_"+r+"_"+s,u}class n7{constructor(t,e,r){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t;let{filterWidth:s,inChannels:u,strideWidth:l,strideHeight:h,padInfo:p,outWidth:m,dilationWidth:y,dilationHeight:b,dataFormat:x}=r,{left:S,top:C}=p,I=u*s,D=rr(),R=x==="channelsLast",A=R?0:1,L=R?1:2,_="";for(let B=0;B<=1;B++)for(let V=0;V<=1;V++)_+=`
          blockIndex = rc.y + ${V};
          pos = rc.x + ${B};

          if(blockIndex < ${t[1]} && pos < ${t[0]}) {
            offsetY = int(blockIndex / (${m})) * ${h} - ${C};
            d0 = offsetY + ${b} * (pos / ${I});

            if(d0 < ${e[A]} && d0 >= 0) {

              offsetX = int(mod(float(blockIndex), ${m}.) * ${l}. - ${S}.);
              d1 = offsetX + ${y} * (int(mod(float(pos), ${I}.) / ${u}.));

              if(d1 < ${e[L]} && d1 >= 0) {

                ch = int(mod(float(pos), ${u}.));

                if (${R}) {
                  innerDims = vec2(d1, ch);
                  result[${B*2+V}] = getChannel(
                    getA(d0, int(innerDims.x),
                    int(innerDims.y)), innerDims);
                } else {
                  innerDims = vec2(d0, d1);
                  result[${B*2+V}] = getChannel(
                    getA(ch, int(innerDims.x),
                    int(innerDims.y)), innerDims);
                }
              }
            }
          }
        `;this.userCode=`
      void main() {
        ivec2 rc = getOutputCoords();

        vec4 result = vec4(0);

        int blockIndex, pos, offsetY, d0, offsetX, d1, ch;
        vec2 innerDims;

        ${_}

        ${D.output} = result;
      }
    `}}class r7{constructor(t,e,r,s,u){this.variableNames=["x"],this.outputShape=[];let l=e,h=t[3]-1;this.outputShape=t;let p,m=`float(${r}) + float(${s}) * sum`;u===.5?p=`inversesqrt(${m})`:u===1?p=`1.0/(${m})`:p=`exp(log(${m}) * float(-${u}));`,this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int r = coords[1];
        int c = coords[2];
        int d = coords[3];
        float x = getX(b, r, c, d);
        float sum = 0.0;
        for (int j = -${l}; j <= ${l}; j++) {
          int idx = d + j;
          if (idx >= 0 && idx <=  ${h}) {
            float z = getX(b, r, c, idx);
            sum += z * z;
          }
        }
        float val = x * ${p};
        setOutput(val);
      }
    `}}class s7{constructor(t,e,r,s,u){this.variableNames=["inputImage","outputImage","dy"],this.outputShape=[],this.outputShape=t,this.depth=t[3],this.depthRadius=e,this.bias=r,this.alpha=s,this.beta=u,this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int r = coords[1];
        int c = coords[2];

        float result = 0.0;
        for (int d = 0; d < ${this.depth}; ++d) {
          int depthBegin = int(max(0.0, float(d - ${e})));
          int depthEnd = int(min(float(${this.depth}),
              float(d + ${e} + 1)));

          const int MIN_DEPTH_BEGIN = 0;
          const int MAX_DEPTH_END = ${this.depth};

          float norm = 0.0;
          for (int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k) {
            if (k < depthBegin){
              continue;
            }
            else if (k >= depthBegin && k < depthEnd) {
              norm += getInputImage(b, r, c, k) * getInputImage(b, r, c, k);
            }
            else {
              break;
            }
          }

          norm = float(${s}) * norm + float(${r});

          for(int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k){
            if (k < depthBegin){
              continue;
            }
            else if (k >= depthBegin && k < depthEnd){
              float dyi = -2.0 * float(${s})
                * float(${u})
                * getInputImage(b ,r ,c, k) * getOutputImage(b, r, c, d)
                / norm;
              if (k == d) {
                dyi += pow(norm, -1.0 * ${u});
              }
              if (k == coords[3]) {
                dyi *= getDy(b, r, c, d);
                result += dyi;
              }
            }
            else {
              break;
            }
          }
      }
      setOutput(result);
      }
    `}}class o7{constructor(t,e,r,s,u){this.variableNames=["x"],this.outputShape=[],this.packedInputs=!0,this.packedOutput=!0;let l=e,h=t[3]-1;this.outputShape=t;let p,m=`float(${r}) + float(${s}) * sum`;u===.5?p=`inversesqrt(${m})`:u===1?p=`1.0/(${m})`:p=`exp(log(${m}) * float(-${u}));`,this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords.x;
        int r = coords.y;
        int c = coords.z;
        int d = coords.w;

        bool hasNextCol = d < ${this.outputShape[3]};
        bool hasNextRow = c < ${this.outputShape[2]};

        vec4 sum = vec4(0.);
        vec4 xFragAtOutputCoords = getX(b, r, c, d);

        vec4 xAtOutputCoords = vec4(
          getChannel(xFragAtOutputCoords, vec2(c, d)),
          hasNextCol ?
            getChannel(xFragAtOutputCoords, vec2(c, d + 1)) : 0.0,
          hasNextRow ?
            getChannel(xFragAtOutputCoords , vec2(c + 1, d)) : 0.0,
          (hasNextRow && hasNextCol) ?
            getChannel(xFragAtOutputCoords, vec2(c + 1, d + 1)) : 0.0
        );

        int firstChannel = d - ${l};
        vec2 cache = vec2(0.);
        if(firstChannel >= 0){
          vec4 firstChannelFrag = getX(b, r, c, firstChannel);
          cache.x = getChannel(firstChannelFrag, vec2(c, firstChannel));
            if(hasNextRow){
              cache.y = getChannel(firstChannelFrag, vec2(c + 1, firstChannel));
            }
        }

        ivec2 depth = ivec2(d, d + 1);
        for (int j = - ${l}; j <= ${l}; j++) {
          ivec2 idx = depth + j;
          bvec2 aboveLowerBound = greaterThanEqual(idx, ivec2(0));
          bvec2 belowUpperBound = lessThanEqual(idx, ivec2(${h}));

          bool depthInRange = aboveLowerBound.x && belowUpperBound.x;
          bool depthPlusOneInRange = aboveLowerBound.y && belowUpperBound.y;

          if(depthInRange || depthPlusOneInRange){
            vec4 z = vec4(0.);
            vec4 xFragAtCurrentDepth;
            z.xz = cache.xy;
            if(depthPlusOneInRange && hasNextCol){
              xFragAtCurrentDepth = idx.y != d ?
                getX(b, r, c, idx.y) : xFragAtOutputCoords;
              z.y = getChannel(xFragAtCurrentDepth, vec2(c, idx.y));
              if(hasNextRow){
                z.w = getChannel(xFragAtCurrentDepth, vec2(c + 1, idx.y));
              }
            }
            cache.xy = z.yw;
            sum += z * z;
          }
        }
        vec4 result = xAtOutputCoords * ${p};
        setOutput(result);
      }
    `}}class a7{constructor(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;let e=t.strideHeight,r=t.strideWidth,s=t.dilationHeight,u=t.effectiveFilterHeight,l=t.effectiveFilterWidth,h=u-1-t.padInfo.top,p=l-1-t.padInfo.left,m=u*l-1;this.userCode=`
      const ivec2 pads = ivec2(${h}, ${p});

      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];

        ivec2 dyRCCorner = coords.yz - pads;
        int dyRCorner = dyRCCorner.x;
        int dyCCorner = dyRCCorner.y;

        // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;
        for (int wR = 0; wR < ${u};
          wR += ${s}) {
          float dyR = float(dyRCorner + wR) / ${e}.0;

          if (dyR < 0.0 || dyR >= ${t.outHeight}.0 || fract(dyR) > 0.0) {
            continue;
          }
          int idyR = int(dyR);

          for (int wC = 0; wC < ${l}; wC++) {
            float dyC = float(dyCCorner + wC) / ${r}.0;

            if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                fract(dyC) > 0.0) {
              continue;
            }
            int idyC = int(dyC);

            float dyValue = getDy(b, idyR, idyC, d);
            int maxPosValue = ${m} - int(getMaxPos(b, idyR, idyC, d));

            // Get the current value, check it against the value from the
            // position matrix.
            int curPosValue = wR * ${l} + wC;
            float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);

            dotProd += dyValue * mask;
          }
        }
        setOutput(dotProd);
      }
    `}}class i7{constructor(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;let e=t.strideDepth,r=t.strideHeight,s=t.strideWidth,u=t.dilationDepth,l=t.dilationHeight,h=t.dilationWidth,p=t.effectiveFilterDepth,m=t.effectiveFilterHeight,y=t.effectiveFilterWidth,b=p-1-t.padInfo.front,x=m-1-t.padInfo.top,S=y-1-t.padInfo.left,C=p*m*y-1;this.userCode=`
      const ivec3 pads = ivec3(${b}, ${x}, ${S});

      void main() {
        ivec5 coords = getOutputCoords();
        int batch = coords.x;
        int ch = coords.u;

        ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;
        int dyDCorner = dyCorner.x;
        int dyRCorner = dyCorner.y;
        int dyCCorner = dyCorner.z;

        // Convolve dy(?, ?, ?, ch) with pos mask(:, :, :, d) to get
        // dx(xD, xR, xC, ch).
        // ? = to be determined. : = across all values in that axis.
        float dotProd = 0.0;

        for (int wD = 0; wD < ${p};
           wD += ${u}) {
          float dyD = float(dyDCorner + wD) / ${e}.0;

          if (dyD < 0.0 || dyD >= ${t.outDepth}.0 || fract(dyD) > 0.0) {
            continue;
          }
          int idyD = int(dyD);

          for (int wR = 0; wR < ${m};
              wR += ${l}) {
            float dyR = float(dyRCorner + wR) / ${r}.0;

            if (dyR < 0.0 || dyR >= ${t.outHeight}.0 ||
                fract(dyR) > 0.0) {
              continue;
            }
            int idyR = int(dyR);

            for (int wC = 0; wC < ${y};
                wC += ${h}) {
              float dyC = float(dyCCorner + wC) / ${s}.0;

              if (dyC < 0.0 || dyC >= ${t.outWidth}.0 ||
                  fract(dyC) > 0.0) {
                continue;
              }
              int idyC = int(dyC);

              float dyValue = getDy(batch, idyD, idyR, idyC, ch);
              int maxPosValue = ${C} -
                  int(getMaxPos(batch, idyD, idyR, idyC, ch));

              // Get the current value, check it against the value from the
              // position matrix.
              int curPosValue =
                  wD * ${m} * ${y} +
                  wR * ${y} + wC;
              float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);

              dotProd += dyValue * mask;
            }
          }
        }
        setOutput(dotProd);
      }
    `}}class cx{constructor(t,e,r,s=!1,u=!1,l=!1,h=null,p=!1){this.variableNames=["matrixA","matrixB"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=r;let m=s?t[1]:t[2],y=Math.ceil(m/2),b=s?"i * 2, rc.y":"rc.y, i * 2",x=u?"rc.z, i * 2":"i * 2, rc.z",S=s?["a.xxyy","a.zzww"]:["a.xxzz","a.yyww"],C=u?["b.xzxz","b.ywyw"]:["b.xyxy","b.zwzw"],I="",D="";h&&(p?I=`vec4 activation(vec4 a) {
          vec4 b = getPreluActivationWeightsAtOutCoords();
          ${h}
        }`:I=`vec4 activation(vec4 x) {
          ${h}
        }`,D="result = activation(result);");let R=l?"result += getBiasAtOutCoords();":"";l&&this.variableNames.push("bias"),p&&this.variableNames.push("preluActivationWeights");let A="rc.x",L="rc.x";t[0]<e[0]?A=`int(min(float(rc.x), ${t[0]-1}.))`:e[0]<t[0]&&(L=`int(min(float(rc.x), ${e[0]-1}.))`),this.userCode=`
      ${I}

      const float sharedDimension = ${y}.0;

      vec4 dot2x2ARowBCol(ivec3 rc) {
        vec4 result = vec4(0);
        for (int i = 0; i < ${y}; i++) {
          int batchA = ${A};
          int batchB = ${L};
          vec4 a = getMatrixA(batchA, ${b});
          vec4 b = getMatrixB(batchB, ${x});

          // These swizzled products need to be separately added.
          // See: https://github.com/tensorflow/tfjs/issues/1735
          result += (${S[0]} * ${C[0]});
          result += (${S[1]} * ${C[1]});
        }
        return result;
      }

      void main() {
        ivec3 rc = getOutputCoords();
        vec4 result = dot2x2ARowBCol(rc);

        ${R}

        ${D}

        setOutput(result);
      }
    `}}class u7{constructor(t,e,r){this.variableNames=["probs"],this.outputShape=[t,r],this.userCode=`
      uniform float seed;

      void main() {
        ivec2 coords = getOutputCoords();
        int batch = coords[0];

        float r = random(seed);
        float cdf = 0.0;

        for (int i = 0; i < ${e-1}; i++) {
          cdf += getProbs(batch, i);

          if (r < cdf) {
            setOutput(float(i));
            return;
          }
        }

        // If no other event happened, last event happened.
        setOutput(float(${e-1}));
      }
    `}getCustomSetupFunc(t){return(e,r)=>{this.seedLoc==null&&(this.seedLoc=e.getUniformLocation(r,"seed")),e.gl.uniform1f(this.seedLoc,t)}}}class c7{constructor(t,e,r,s){this.variableNames=["indices"],this.outputShape=[t,e],this.userCode=`
      void main() {
        ivec2 coords = getOutputCoords();
        int index = round(getIndices(coords.x));
        setOutput(mix(float(${s}), float(${r}),
                      float(index == coords.y)));
      }
    `}}class l7{constructor(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0,this.outputShape=t;let e=t.length;if(e===0)this.userCode=`
        void main() {
          setOutput(vec4(getA(), 0., 0., 0.));
        }
      `;else{let r=nr("rc",e),s=We(e),u=f7(e,t,r),l=p7(e,t[t.length-1],t[t.length-2],r),h=d7(t,r);this.userCode=`
        void main() {
          ${s} rc = getOutputCoords();

          if(${u}) {
            setOutput(vec4(0));
          } else {
            ${l}

            setOutput(vec4(${h}));
          }
        }
      `}}}function h7(n,t){let e=[];for(let r=0;r<=1;r++)for(let s=0;s<=1;s++){let u=`${r===0?"r":"rp1"}, ${s===0?"c":"cp1"}`;for(let l=2;l<n;l++)u=`${t[t.length-1-l]},`+u;e.push(u)}return e}function f7(n,t,e){if(n===1)return`rc > ${t[0]}`;let r="";for(let s=n-2;s<n;s++)r+=`${e[s]} >= ${t[s]}`,s<n-1&&(r+="||");return r}function p7(n,t,e,r){if(n===1)return"";let s=r.slice(-2);return`
    int r = ${s[0]};
    int c = ${s[1]};
    int rp1 = r + 1;
    int cp1 = c + 1;

    bool cEdge = cp1 >= ${t};
    bool rEdge = rp1 >= ${e};
  `}function d7(n,t){let e=n.length,r=h7(e,t);return e===1?`getA(rc),
            rc + 1 >= ${n[0]} ? 0. : getA(rc + 1),
            0, 0`:`getA(${r[0]}),
          cEdge ? 0. : getA(${r[1]}),
          rEdge ? 0. : getA(${r[2]}),
          rEdge || cEdge ? 0. : getA(${r[3]})`}class m7{constructor(t,e,r){this.variableNames=["x"],this.outputShape=e.map((m,y)=>m[0]+t[y]+m[1]);let s=t.length,u=We(s),l=e.map(m=>m[0]).join(","),h=e.map((m,y)=>m[0]+t[y]).join(","),p=["coords[0]","coords[1]","coords[2]","coords[3]"].slice(0,s);if(s===1){this.userCode=`
        int start = ${l};
        int end = ${h};

        void main() {
          int outC = getOutputCoords();
          if (outC < start || outC >= end) {
            setOutput(float(${r}));
          } else {
            setOutput(getX(outC - start));
          }
        }
      `;return}this.userCode=`
      ${u} start = ${u}(${l});
      ${u} end = ${u}(${h});

      void main() {
        ${u} outC = getOutputCoords();
        if (any(lessThan(outC, start)) || any(greaterThanEqual(outC, end))) {
          setOutput(float(${r}));
        } else {
          ${u} coords = outC - start;
          setOutput(getX(${p}));
        }
      }
    `}}class g7{constructor(t,e,r){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=e.map((I,D)=>I[0]+t[D]+I[1]);let s=t.length,u=We(s),l=e.map(I=>I[0]).join(","),h=e.map((I,D)=>I[0]+t[D]).join(","),p=nr("rc",s),m=nr("source",s),y=`${p[s-1]} < ${this.outputShape[s-1]}`,b=s===1?"source":`vec2(${m.slice(-2).join()})`,x=[`${u} rc = outputLoc;`,`${p[s-1]} += 1;
       if(${y}) {
      `,s===1?"":`}
       rc = outputLoc;
       ${p[s-2]} += 1;
       if(${p[s-2]} < ${this.outputShape[s-2]}) {`,s===1?"":`  ${p[s-1]} += 1;
         if(${y}) {`],S=s===1?"rc < start || rc >= end":"any(lessThan(rc, start)) || any(greaterThanEqual(rc, end))",C="";for(let I=0,D=s===1?2:4;I<D;I++)C+=`
        ${x[I]}
        if (${S}) {
          result[${I}] = float(${r});
        } else {
          ${u} source = rc - start;
          result[${I}] = getChannel(getX(${m.join()}), ${b});
        }
      `;C+=s===1?"} ":"}}",this.userCode=`
      const ${u} start = ${u}(${l});
      const ${u} end = ${u}(${h});

      void main() {
        ${u} outputLoc = getOutputCoords();
        vec4 result = vec4(0.);
        ${C}
        setOutput(result);
      }
    `}}class xf{constructor(t,e,r,s=!1,u=!1){if(this.variableNames=["x"],e==="avg"&&r)throw new Error("Cannot compute positions for average pool.");let l=t.filterWidth,h=t.strideHeight,p=t.strideWidth,m=t.dilationHeight,y=t.dilationWidth,b=t.effectiveFilterHeight,x=t.effectiveFilterWidth,S=t.padInfo.top,C=t.padInfo.left;this.outputShape=t.outShape;let I=e==="avg",D=`((batch  * ${t.inHeight} + xR) * ${t.inWidth} + xC) * ${t.inChannels} + d`,R=`(xR * ${t.inWidth} + xC) * ${t.inChannels} + d`,A="0.0";if(I||(A="-1.0 / 1e-20"),r){let j=">=";this.userCode=`
        const ivec2 strides = ivec2(${h}, ${p});
        const ivec2 pads = ivec2(${S}, ${C});

        void main() {
          ivec4 coords = getOutputCoords();
          int batch = coords[0];
          int d = coords[3];

          ivec2 xRCCorner = coords.yz * strides - pads;
          int xRCorner = xRCCorner.x;
          int xCCorner = xRCCorner.y;

          // max/min x(?, ?, d) to get y(yR, yC, d).
          // ? = to be determined
          float minMaxValue = 0.0;
          float minMaxValueFound = 0.0;
          int minMaxPosition = 0;
          float avgValue = 0.0;

          for (int wR = 0; wR < ${b};
              wR += ${m}) {
            int xR = xRCorner + wR;

            if (xR < 0 || xR >= ${t.inHeight}) {
              continue;
            }

            for (int wC = 0; wC < ${x};
                wC += ${y}) {
              int xC = xCCorner + wC;

              if (xC < 0 || xC >= ${t.inWidth}) {
                continue;
              }

              float value = getX(batch, xR, xC, d);

              // If a min / max value has already been found, use it. If not,
              // use the current value.
              float currMinMaxValue = mix(
                  value, minMaxValue, minMaxValueFound);
              if (value ${j} currMinMaxValue) {
                minMaxValue = value;
                minMaxValueFound = 1.0;
                minMaxPosition = ${s?u?D:R:`wR * ${x} + wC`};
              }
            }
          }
          setOutput(float(minMaxPosition));
        }
      `;return}let L="max",_=`${e}(${e}(${e}(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])`;e==="avg"&&(_="avgValue / count");let B=Math.floor(l/4)*4,V=l%4,q=`
      if (${I}) {
        avgValue += dot(values, ones);
      } else {
        minMaxValue = ${L}(values, minMaxValue);
      }
    `;this.userCode=`
      const ivec2 strides = ivec2(${h}, ${p});
      const ivec2 pads = ivec2(${S}, ${C});
      const float initializationValue = ${A};
      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);

      float count = 0.0;

      float getValue(int batch, int xR, int xC, int d) {
        if (xC < 0 || xC >= ${t.inWidth}) {
          return initializationValue;
        }
        count += 1.0;
        return getX(batch, xR, xC, d);
      }

      void main() {
        ivec4 coords = getOutputCoords();
        int batch = coords[0];
        int d = coords[3];

        ivec2 xRCCorner = coords.yz * strides - pads;
        int xRCorner = xRCCorner.x;
        int xCCorner = xRCCorner.y;

        // max/min x(?, ?, d) to get y(yR, yC, d).
        // ? = to be determined
        vec4 minMaxValue = vec4(${A});
        float avgValue = 0.0;
        count = 0.0;

        for (int wR = 0; wR < ${b};
            wR += ${m}) {
          int xR = xRCorner + wR;

          if (xR < 0 || xR >= ${t.inHeight}) {
            continue;
          }

          for (int wC = 0; wC < ${B}; wC += 4) {
            int xC = xCCorner + wC * ${y};

            vec4 values = vec4(
              getValue(batch, xR, xC, d),
              getValue(batch, xR, xC + ${y}, d),
              getValue(batch, xR, xC + 2 * ${y}, d),
              getValue(batch, xR, xC + 3 * ${y}, d)
            );

            ${q}
          }

          int xC = xCCorner + ${B};
          if (${V===1}) {
            vec4 values = vec4(
              getValue(batch, xR, xC, d),
              initializationValue,
              initializationValue,
              initializationValue
            );

            ${q}
          } else if (${V===2}) {
            vec4 values = vec4(
              getValue(batch, xR, xC, d),
              getValue(batch, xR, xC + ${y}, d),
              initializationValue,
              initializationValue
            );

            ${q}
          } else if (${V===3}) {
            vec4 values = vec4(
              getValue(batch, xR, xC, d),
              getValue(batch, xR, xC + ${y}, d),
              getValue(batch, xR, xC + 2 * ${y}, d),
              initializationValue
            );

            ${q}
          }
        }
        setOutput(${_});
      }
    `}}class lx{constructor(t,e,r,s=!1,u=!1){if(this.variableNames=["x"],e==="avg"&&r)throw new Error("Cannot compute positions for average pool.");let l=t.filterWidth,h=t.strideDepth,p=t.strideHeight,m=t.strideWidth,y=t.dilationDepth,b=t.dilationHeight,x=t.dilationWidth,S=t.effectiveFilterDepth,C=t.effectiveFilterHeight,I=t.effectiveFilterWidth,D=t.padInfo.front,R=t.padInfo.top,A=t.padInfo.left;this.outputShape=t.outShape;let L=e==="avg",_="0.0";if(L||(_="-1.0 / 1e-20"),r){let tt=">=";this.userCode=`
        const ivec3 strides =
            ivec3(${h}, ${p}, ${m});
        const ivec3 pads = ivec3(${D}, ${R}, ${A});

        void main() {
          ivec5 coords = getOutputCoords();
          int batch = coords.x;
          int ch = coords.u;

          ivec3 xCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;
          int xDCorner = xCorner.x;
          int xRCorner = xCorner.y;
          int xCCorner = xCorner.z;

          // max/min x(?, ?, ?, ch) to get y(yD, yR, yC, ch).
          // ? = to be determined
          float minMaxValue = 0.0;
          float minMaxValueFound = 0.0;
          int minMaxPosition = 0;

          for (int wD = 0; wD < ${S};
              wD += ${y}) {
            int xD = xDCorner + wD;

            if (xD < 0 || xD >= ${t.inDepth}) {
              continue;
            }

            for (int wR = 0; wR < ${C};
                wR += ${b}) {
              int xR = xRCorner + wR;

              if (xR < 0 || xR >= ${t.inHeight}) {
                continue;
              }

              for (int wC = 0; wC < ${I};
                  wC += ${x}) {
                int xC = xCCorner + wC;

                if (xC < 0 || xC >= ${t.inWidth}) {
                  continue;
                }

                float value = getX(batch, xD, xR, xC, ch);

                // If a min / max value has already been found, use it. If not,
                // use the current value.
                float currMinMaxValue = mix(
                    value, minMaxValue, minMaxValueFound);
                if (value ${tt} currMinMaxValue) {
                  minMaxValue = value;
                  minMaxValueFound = 1.0;
                  minMaxPosition = ${s?u?`(((batch * ${t.inDepth} + xD) * ${t.inHeight} + xR) * ${t.inWidth} + xC) * ${t.inChannels} + ch`:`((xD * ${t.inHeight} + xR) * ${t.inWidth} + xC) * ${t.inChannels} + ch`:`wD * ${C} * ${I} +
                      wR * ${I} + wC`};
                }
              }
            }
          }
          setOutput(float(minMaxPosition));
        }
      `;return}let B="max",V=`${e}(${e}(${e}(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])`;e==="avg"&&(V="avgValue / count");let q=Math.floor(l/4)*4,j=l%4,et=`
      if (${L}) {
        avgValue += dot(values, ones);
      } else {
        minMaxValue = ${B}(values, minMaxValue);
      }
    `;this.userCode=`
      const ivec3 strides =
        ivec3(${h}, ${p}, ${m});
      const ivec3 pads = ivec3(${D}, ${R}, ${A});
      const float initializationValue = ${_};
      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);

      float count = 0.0;

      float getValue(int batch, int xD, int xR, int xC, int ch) {
        if (xC < 0 || xC >= ${t.inWidth}) {
          return initializationValue;
        }
        count += 1.0;
        return getX(batch, xD, xR, xC, ch);
      }

      void main() {
        ivec5 coords = getOutputCoords();
        int batch = coords.x;
        int ch = coords.u;

        ivec3 xCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;
        int xDCorner = xCorner.x;
        int xRCorner = xCorner.y;
        int xCCorner = xCorner.z;

        // max/min x(?, ?, ?, d) to get y(yD, yR, yC, ch).
        // ? = to be determined
        vec4 minMaxValue = vec4(${_});
        float avgValue = 0.0;
        count = 0.0;

        for (int wD = 0; wD < ${S};
            wD += ${y}) {
          int xD = xDCorner + wD;

          if (xD < 0 || xD >= ${t.inDepth}) {
            continue;
          }

          for (int wR = 0; wR < ${C};
            wR += ${b}) {
            int xR = xRCorner + wR;

            if (xR < 0 || xR >= ${t.inHeight}) {
              continue;
            }

            for (int wC = 0; wC < ${q}; wC += 4) {
              int xC = xCCorner + wC * ${x};

              vec4 values = vec4(
                getValue(batch, xD, xR, xC, ch),
                getValue(batch, xD, xR, xC + ${x}, ch),
                getValue(batch, xD, xR, xC + 2 * ${x}, ch),
                getValue(batch, xD, xR, xC + 3 * ${x}, ch)
              );

              ${et}
            }

            int xC = xCCorner + ${q};
            if (${j===1}) {
              vec4 values = vec4(
                getValue(batch, xD, xR, xC, ch),
                initializationValue,
                initializationValue,
                initializationValue
              );

              ${et}
            } else if (${j===2}) {
              vec4 values = vec4(
                getValue(batch, xD, xR, xC, ch),
                getValue(batch, xD, xR, xC + ${x}, ch),
                initializationValue,
                initializationValue
              );

              ${et}
            } else if (${j===3}) {
              vec4 values = vec4(
                getValue(batch, xD, xR, xC, ch),
                getValue(batch, xD, xR, xC + ${x}, ch),
                getValue(batch, xD, xR, xC + 2 * ${x}, ch),
                initializationValue
              );

              ${et}
            }
          }
          setOutput(${V});
        }
      }
    `}}class uD{constructor(t,e){this.variableNames=["x"];let{windowSize:r,batchSize:s,inSize:u,outSize:l}=t;this.outputShape=[s,l];let h="0.0",p="";e==="prod"?h="1.0":e==="min"?(h="1.0 / 1e-20",p="min"):e==="max"&&(h="-1.0 / 1e-20",p="max");let m=`${e}(${e}(${e}(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])`;e==="sum"?m="sumValue":e==="prod"?m="prodValue":e==="all"?m="allValue":e==="any"&&(m="anyValue");let y=Math.floor(r/4)*4,b=r%4,x=`
      if (${e==="sum"}) {
        sumValue += dot(values, ones);
      } else if (${e==="prod"}) {
        vec2 tmp = vec2(values[0], values[1]) * vec2(values[2], values[3]);
        prodValue *= tmp[0] * tmp[1];
      } else {
        minMaxValue = ${p}(values, minMaxValue);
      }
    `,S="vec4";e==="all"?(h="1.0",x=`
        bool reducedAllValue = all(values);
        float floatedReducedAllValue = float(reducedAllValue);
        allValue = float(allValue >= 1.0 && floatedReducedAllValue >= 1.0);
      `,S="bvec4"):e==="any"&&(h="0.0",x=`
        bool reducedAnyValue = any(values);
        float floatedReducedAnyValue = float(reducedAnyValue);
        anyValue = float(anyValue >= 1.0 || floatedReducedAnyValue >= 1.0);
      `,S="bvec4");let C="";u%r>0&&(C=`
        if (inIdx < 0 || inIdx >= ${u}) {
          return initializationValue;
        }
      `),this.userCode=`
      const float initializationValue = ${h};
      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);

      float getValue(int batch, int inIdx) {
        ${C}
        return getX(batch, inIdx);
      }

      void main() {
        ivec2 coords = getOutputCoords();
        int batch = coords[0];
        int outIdx = coords[1];
        int inOffset = outIdx * ${r};

        vec4 minMaxValue = vec4(${h});
        float prodValue = 1.0;
        float sumValue = 0.0;
        float allValue = 1.0;
        float anyValue = 0.0;

        for (int i = 0; i < ${y}; i += 4) {
          int inIdx = inOffset + i;
          ${S} values = ${S}(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            getValue(batch, inIdx + 2),
            getValue(batch, inIdx + 3)
          );

          ${x}
        }

        int inIdx = inOffset + ${y};
        if (${b===1}) {
          ${S} values = ${S}(
            getValue(batch, inIdx),
            initializationValue,
            initializationValue,
            initializationValue
          );

          ${x}
        } else if (${b===2}) {
          ${S} values = ${S}(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            initializationValue,
            initializationValue
          );

          ${x}
        } else if (${b===3}) {
          ${S} values = ${S}(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            getValue(batch, inIdx + 2),
            initializationValue
          );

          ${x}
        }
        setOutput(${m});
      }
    `}}class cD{constructor(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t;let r="";for(let s=0;s<4;s++){let u="thisRC = rc;";s%2===1&&(u+="thisRC.z += 1;"),s>1&&(u+="thisRC.y += 1;"),r+=`
        ${u}
        ${s>0?"if(thisRC.y < rows && thisRC.z < cols){":""}
          int flatIndex = getFlatIndex(thisRC);

          ivec3 inputRC = inputCoordsFromReshapedOutCoords(flatIndex);
          vec2 inputRCInnerDims = vec2(float(inputRC.y),float(inputRC.z));

          result[${s}] =
            getChannel(getA(inputRC.x, inputRC.y, inputRC.z), inputRCInnerDims);
        ${s>0?"}":""}
      `}this.userCode=`
      ${v7(e)}
      ${ux(t)}

      void main() {
        ivec3 rc = getOutputCoords();

        vec4 result = vec4(0.);

        ivec3 thisRC;
        int rows = ${t[1]};
        int cols = ${t[2]};

        ${r}

        setOutput(result);
      }
    `}}function v7(n){let t=$i(["r","c","d"],n);return`
    ivec3 inputCoordsFromReshapedOutCoords(int index) {
      ${t}
      return ivec3(r, c, d);
    }
  `}class y7{constructor(t,e,r){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;let[,s,u]=e.shape,[,l,h]=t.shape,p=[r&&l>1?s-1:s,r&&h>1?u-1:u],m=[r&&l>1?l-1:l,r&&h>1?h-1:h],y=p[0]/m[0],b=p[1]/m[1],x=1/y,S=1/b,C=Math.ceil(x)*2+2,I=Math.ceil(S)*2+2;this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];
        int r = coords[1];
        int c = coords[2];

        float accumulator = 0.0;

        const float heightScale = float(${y});
        const float widthScale = float(${b});

        const float invHeightScale = float(${x});
        const float invWidthScale = float(${S});

        const int winHeight = int(${C});
        const int winWidth = int(${I});

        // Compute bounds for where in dy we will look
        float startRLerp = floor(float(r) * invHeightScale);
        int startDyR = int(startRLerp - float(winHeight / 2));

        float startCLerp = floor(float(c) * invWidthScale);
        int startDyC = int(startCLerp - float(winWidth / 2));

        // Loop over dy
        for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {
          int dyR = dyROffset + startDyR;

          // Guard against the window exceeding the bounds of dy
          if (dyR < 0 || dyR >= ${l}) {
            continue;
          }

          for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {
            int dyC = dyCOffset + startDyC;

            // Guard against the window exceeding the bounds of dy
            if (dyC < 0 || dyC >= ${h}) {
              continue;
            }

            float dxR = float(dyR) * heightScale;
            int topDxRIndex = int(floor(dxR));
            int bottomDxRIndex = int(min(ceil(dxR), ${s-1}.0));
            float dxRLerp = dxR - float(topDxRIndex);
            float inverseDxRLerp = 1.0 - dxRLerp;

            float dxC = float(dyC) * widthScale;
            int leftDxCIndex = int(floor(dxC));
            int rightDxCIndex = int(min(ceil(dxC), ${u-1}.0));
            float dxCLerp = dxC - float(leftDxCIndex);
            float inverseDxCLerp = 1.0 - dxCLerp;

            if (r == topDxRIndex && c == leftDxCIndex) {
              // topLeft
              accumulator +=
                getDy(b, dyR, dyC, d) * inverseDxRLerp * inverseDxCLerp;
            }

            if (r == topDxRIndex && c == rightDxCIndex) {
              // topRight
              accumulator += getDy(b, dyR, dyC, d) * inverseDxRLerp * dxCLerp;
            }

            if (r == bottomDxRIndex && c == leftDxCIndex) {
              // bottomLeft
              accumulator += getDy(b, dyR, dyC, d) * dxRLerp * inverseDxCLerp;
            }

            if (r == bottomDxRIndex && c == rightDxCIndex) {
              // bottomRight
              accumulator += getDy(b, dyR, dyC, d) * dxRLerp * dxCLerp;
            }
          }
        }
        // End loop over dy

        setOutput(accumulator);
      }
    `}}class b7{constructor(t,e,r,s){this.variableNames=["A"],this.outputShape=[];let[u,l,h,p]=t;this.outputShape=[u,e,r,p];let m=[s&&e>1?l-1:l,s&&r>1?h-1:h],y=[s&&e>1?e-1:e,s&&r>1?r-1:r];this.userCode=`
      const vec2 effectiveInputOverOutputRatioRC = vec2(
          ${m[0]/y[0]},
          ${m[1]/y[1]});
      const vec2 inputShapeRC = vec2(${l}.0, ${h}.0);

      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];
        ivec2 yRC = coords.yz;

        // Fractional source index.
        vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;

        // Compute the four integer indices.
        ivec2 sourceFloorRC = ivec2(sourceFracIndexRC);
        ivec2 sourceCeilRC = ivec2(
          min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));

        float topLeft = getA(b, sourceFloorRC.x, sourceFloorRC.y, d);
        float bottomLeft = getA(b, sourceCeilRC.x, sourceFloorRC.y, d);
        float topRight = getA(b, sourceFloorRC.x, sourceCeilRC.y, d);
        float bottomRight = getA(b, sourceCeilRC.x, sourceCeilRC.y, d);

        vec2 fracRC = sourceFracIndexRC - vec2(sourceFloorRC);

        float top = topLeft + (topRight - topLeft) * fracRC.y;
        float bottom = bottomLeft + (bottomRight - bottomLeft) * fracRC.y;
        float newValue = top + (bottom - top) * fracRC.x;

        setOutput(newValue);
      }
    `}}class w7{constructor(t,e,r,s){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=[];let[u,l,h,p]=t;this.outputShape=[u,e,r,p];let m=[s&&e>1?l-1:l,s&&r>1?h-1:h],y=[s&&e>1?e-1:e,s&&r>1?r-1:r];this.userCode=`
      const vec3 effectiveInputOverOutputRatioRC = vec3(
          ${m[0]/y[0]},
          ${m[1]/y[1]},
          ${m[1]/y[1]});
      const vec3 inputShapeRC = vec3(${l}.0, ${h}.0,
                                     ${h}.0);

      float getAValue(int b, int r, int c, int d) {
        return getChannel(getA(b, r, c, d), vec2(c, d));
      }

      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];
        // Calculate values for next column in yRC.z.
        ivec3 yRC = coords.yzz + ivec3(0, 0, 1);

        // Fractional source index.
        vec3 sourceFracIndexRC = vec3(yRC) * effectiveInputOverOutputRatioRC;

        // Compute the four integer indices.
        ivec3 sourceFloorRC = ivec3(sourceFracIndexRC);
        ivec3 sourceCeilRC = ivec3(
          min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));

        // Should we calculate next column and row elements in 2x2 packed cell.
        bool hasNextCol = d < ${p-1};
        bool hasNextRow = coords.z < ${r-1};

        // In parallel, construct four corners for all four components in
        // packed 2x2 cell.
        vec4 topLeft = vec4(
          getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d),
          hasNextCol ? getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d + 1)
                     : 0.0,
          hasNextRow ? getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d)
                     : 0.0,
          (hasNextRow && hasNextCol) ?
            getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d + 1) : 0.0);

        vec4 bottomLeft = vec4(
          getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d),
          hasNextCol ? getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d + 1)
                     : 0.0,
          hasNextRow ? getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d)
                     : 0.0,
          (hasNextRow && hasNextCol) ?
            getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d + 1) : 0.0);

        vec4 topRight = vec4(
          getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d),
          hasNextCol ? getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d + 1)
                     : 0.0,
          hasNextRow ? getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d)
                     : 0.0,
          (hasNextRow && hasNextCol) ?
            getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d + 1) : 0.0);

        vec4 bottomRight = vec4(
          getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d),
          hasNextCol ? getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d + 1)
                     : 0.0,
          hasNextRow ? getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d)
                     : 0.0,
          (hasNextRow && hasNextCol) ?
            getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d + 1) : 0.0);

        vec3 fracRC = sourceFracIndexRC - vec3(sourceFloorRC);

        vec4 top = mix(topLeft, topRight, fracRC.yyzz);
        vec4 bottom = mix(bottomLeft, bottomRight, fracRC.yyzz);
        vec4 newValue = mix(top, bottom, fracRC.x);

        setOutput(newValue);
      }
    `}}class x7{constructor(t,e,r){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;let[,s,u]=e.shape,[,l,h]=t.shape,p=[r&&l>1?s-1:s,r&&h>1?u-1:u],m=[r&&l>1?l-1:l,r&&h>1?h-1:h],y=p[0]/m[0],b=p[1]/m[1],x=1/y,S=1/b,C=Math.ceil(x)*2+2,I=Math.ceil(S)*2+2;this.userCode=`
      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];
        int r = coords[1];
        int c = coords[2];

        float accumulator = 0.0;

        const float heightScale = float(${y});
        const float widthScale = float(${b});

        const float invHeightScale = float(${x});
        const float invWidthScale = float(${S});

        const int winHeight = int(${C});
        const int winWidth = int(${I});

        // Compute bounds for where in dy we will look
        float startRLerp = floor(float(r) * invHeightScale);
        int startDyR = int(floor(startRLerp - float(winHeight / 2)));

        float startCLerp = floor(float(c) * invWidthScale);
        int startDyC = int(floor(startCLerp - float(winWidth / 2)));

        // Loop over dy
        for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {
          int dyR = dyROffset + startDyR;

          // Guard against the window exceeding the bounds of dy
          if (dyR < 0 || dyR >= ${l}) {
            continue;
          }

          for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {
            int dyC = dyCOffset + startDyC;

            // Guard against the window exceeding the bounds of dy
            if (dyC < 0 || dyC >= ${h}) {
              continue;
            }

            float sourceFracRow =
              float(${p[0]}) *
                (float(dyR) / float(${m[0]}));

            float sourceFracCol =
                float(${p[1]}) *
                  (float(dyC) / float(${m[1]}));

            int sourceNearestRow = int(min(
                float(int(${s}) - 1),
                ${r} ? float(round(sourceFracRow)) :
                                  float(floor(sourceFracRow))));

            int sourceNearestCol = int(min(
                float(int(${u}) - 1),
                ${r} ? float(round(sourceFracCol)) :
                                  float(floor(sourceFracCol))));

            if (r == sourceNearestRow && c == sourceNearestCol) {
              accumulator += getDy(b, dyR, dyC, d);
            }
          }
        }
        // End loop over dy

        setOutput(accumulator);
      }
    `}}class T7{constructor(t,e,r,s){this.variableNames=["A"],this.outputShape=[];let[u,l,h,p]=t;this.outputShape=[u,e,r,p];let m=[s&&e>1?l-1:l,s&&r>1?h-1:h],y=[s&&e>1?e-1:e,s&&r>1?r-1:r],b=s?"0.5":"0.0";this.userCode=`
      const vec2 effectiveInputOverOutputRatioRC = vec2(
          ${m[0]/y[0]},
          ${m[1]/y[1]});
      const vec2 inputShapeRC = vec2(${l}.0, ${h}.0);

      void main() {
        ivec4 coords = getOutputCoords();
        int b = coords[0];
        int d = coords[3];
        ivec2 yRC = coords.yz;

        // Fractional source index.
        vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;

        // Compute the coordinators of nearest neighbor point.
        ivec2 sourceNearestRC = ivec2(
          min(inputShapeRC - 1.0, floor(sourceFracIndexRC + ${b})));

        float newValue = getA(b, sourceNearestRC.x, sourceNearestRC.y, d);

        setOutput(newValue);
      }
    `}}class k7{constructor(t,e){this.variableNames=["x"];let r=t.length;if(r>4)throw new Error(`WebGL backend: Reverse of rank-${r} tensor is not yet supported`);if(this.outputShape=t,r===1){this.userCode=`
        void main() {
          int coord = getOutputCoords();
          setOutput(getX(${t[0]} - coord - 1));
        }
      `;return}let s=h=>e.indexOf(h)!==-1&&t[h]!==1?`${t[h]} - coords[${h}] - 1`:`coords[${h}]`,u=t.map((h,p)=>s(p)).join(","),l=We(r);this.userCode=`
      void main() {
        ${l} coords = getOutputCoords();
        setOutput(getX(${u}));
      }
    `}}class S7{constructor(t,e){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0;let r=t.length;if(r>4)throw new Error(`WebGL backend: Reverse of rank-${r} tensor is not yet supported`);this.outputShape=t;let s=nr("rc",r),u=`${s[r-1]} + 1 < ${this.outputShape[r-1]}`,l=`${s[r-2]} + 1 < ${this.outputShape[r-2]}`,h=We(r);r===1?this.userCode=`
        void main(){
          int rc = getOutputCoords();
          vec4 result = vec4(0.);
          result.r = getChannel(getX(${t[0]} - rc - 1),
            ${t[0]} - rc - 1);
          if(${u}){
              result.g = getChannel(getX(${t[0]} - (rc  + 1) - 1),
                ${t[0]} - (rc  + 1) - 1);
          }
          setOutput(result);
        }
      `:this.userCode=`
        void main() {
          ${h} rc = getOutputCoords();
          vec4 result = vec4(0.);
          result.r = ${p(s.slice())};
          if(${u}){
            result.g = ${m(s.slice())};
          }
          if(${l}) {
            result.b = ${y(s.slice())};
            if(${u}) {
              result.a = ${b(s.slice())};
            }
          }
          setOutput(result);
        }
    `;function p(C){return x(C)}function m(C){return C[r-1]="("+C[r-1]+" + 1)",x(C)}function y(C){return C[r-2]="("+C[r-2]+" + 1)",x(C)}function b(C){return C[r-1]="("+C[r-1]+" + 1)",C[r-2]="("+C[r-2]+" + 1)",x(C)}function x(C){let I=t.map((A,L)=>S(L,C)),D=I.join(","),R=I.slice(-2).join(",");return`getChannel(getX(${D}), vec2(${R}))`}function S(C,I){return e.indexOf(C)!==-1&&t[C]!==1?`${t[C]} - ${I[C]} - 1`:`${I[C]}`}}}class lD{constructor(t,e,r,s,u,l,h=!0){this.variableNames=["updates","indices","defaultValue"],this.outputShape=l;let p=We(u.length),m=We(l.length),y="";r===1?y="i":r===2&&(y="i, j");let b=`getIndices(${y})`,x="";s===1?x="i":s===2&&(x="i, coords[1]");let S=`getUpdates(${x})`,C=e>1?"strides[j]":"strides";this.userCode=`
        ${p} strides = ${p}(${u});

        void main() {
          ${m} coords = getOutputCoords();
          float sum = 0.0;
          bool found = false;
          for (int i = 0; i < ${t}; i++) {
            int flattenedIndex = 0;
            for (int j = 0; j < ${e}; j++) {
              int index = round(${b});
              flattenedIndex += index * ${C};
            }
            if (flattenedIndex == coords[0]) {
              sum += ${S};
              found = true;
            }
          }
          setOutput(mix(getDefaultValue(), sum, float(found)));
        }
      `}}class C7{constructor(t,e){this.variableNames=["x","segmentIds"];let r=t.windowSize,s=t.batchSize,u=t.inSize,l=t.numSegments,h=l*Math.ceil(u/r);this.outputShape=[s,h];let p="0.0",m="sumValue",y=Math.floor(r/4)*4,b=r%4,x=`
        sumValue += dot(values, segFilter);
    `,S="";u%r>0&&(S=`
        if (inIdx < 0 || inIdx >= ${u}) {
          return initializationValue;
        }
      `);let C="";u%r>0&&(C=`
        if (inIdx < 0 || inIdx >= ${u}) {
          return -1.0;
        }
      `),this.userCode=`
      const float initializationValue = ${p};

      float getValue(int batch, int inIdx) {
        ${S}
        return getX(batch, inIdx);
      }

      float getSegmentIdAtIndex(int inIdx) {
        ${C}
        return getSegmentIds(inIdx);
      }

      void main() {
        ivec2 coords = getOutputCoords();
        int batch = coords[0];
        int outIdx = coords[1];
        int inOffset = int(floor(float(outIdx) / float(
          ${l})) * float(${r}));
        int currentSeg = int(mod(float(outIdx), float(${l})));

        float sumValue = 0.0;

        for (int i = 0; i < ${y}; i += 4) {
          int inIdx = inOffset + i;
          vec4 values = vec4(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            getValue(batch, inIdx + 2),
            getValue(batch, inIdx + 3)
          );

          vec4 segFilter = vec4(
            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,
            int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,
            int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,
            int(getSegmentIdAtIndex(inIdx + 3)) == currentSeg ? 1 : 0
          );

          ${x}
        }

        int inIdx = inOffset + ${y};
        if (${b===1}) {
          vec4 values = vec4(
            getValue(batch, inIdx),
            initializationValue,
            initializationValue,
            initializationValue
          );

          int inIdxSeg = int(getSegmentIdAtIndex(inIdx));

          vec4 segFilter = vec4(
            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,
            0,
            0,
            0
          );

          ${x}
        } else if (${b===2}) {
          vec4 values = vec4(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            initializationValue,
            initializationValue
          );

          vec4 segFilter = vec4(
            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,
            int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,
              0,
              0
          );

          ${x}
        } else if (${b===3}) {
          vec4 values = vec4(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            getValue(batch, inIdx + 2),
            initializationValue
          );

          vec4 segFilter = vec4(
            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,
            int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,
            int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,
            0
          );

          ${x}
        }
        setOutput(${m});
      }
    `}}class N7{constructor(t,e,r){this.variableNames=["c","a","b"],this.outputShape=e;let s,u;if(r>4)throw Error(`Where for rank ${r} is not yet supported`);if(r===1)u="resRC",s="resRC";else{let h=["resRC.x","resRC.y","resRC.z","resRC.w"],p=[],m=[];for(let y=0;y<e.length;y++)m.push(`${h[y]}`),y<t&&p.push(`${h[y]}`);s=p.join(),u=m.join()}let l=We(r);this.userCode=`
      void main() {
        ${l} resRC = getOutputCoords();
        float cVal = getC(${s});
        if (cVal >= 1.0) {
          setOutput(getA(${u}));
        } else {
          setOutput(getB(${u}));
        }
      }
    `}}class I7{constructor(t){this.variableNames=["source"],this.outputShape=t,this.rank=t.length;let e=We(this.rank),r=`uniform int start[${this.rank}];`,s=E7(this.rank),u,l=t.map((h,p)=>`sourceLoc.${hx[p]} = start[${p}] + coords.${hx[p]};`);u=`
        ${e} sourceLoc;
        ${e} coords = getOutputCoords();
        ${l.join(`
`)}
      `,this.userCode=`
      ${r}
      void main() {
        ${u}
        setOutput(getSource(${s}));
      }
    `}getCustomSetupFunc(t){if(t.length!==this.rank)throw Error(`The rank (${this.rank}) of the program must match the length of start (${t.length})`);return(e,r)=>{if(this.startLoc==null&&(this.startLoc=e.getUniformLocationNoThrow(r,"start"),this.startLoc==null))return;e.gl.uniform1iv(this.startLoc,t)}}}let hx=["x","y","z","w","u","v"];function E7(n){if(n===1)return"sourceLoc";if(n<=6)return hx.slice(0,n).map(t=>"sourceLoc."+t).join(",");throw Error(`Slicing for rank ${n} is not yet supported`)}class D7{constructor(t){this.variableNames=["source"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.rank=t.length;let e=We(this.rank),r=nr("coords",this.rank),s=nr("sourceLoc",this.rank),u=this.rank===1?"sourceLoc":`vec2(${s.slice(-2).join()})`,l=`getChannel(getSource(${s.join()}), ${u})`,h=`
      result.x = ${l};
      if (++${r[this.rank-1]} < ${t[this.rank-1]}) {
        ++${s[this.rank-1]};
        result.y = ${l};
        --${s[this.rank-1]};
      }
    `,p=this.rank===1?"":`
      --${r[this.rank-1]};
      if (++${r[this.rank-2]} < ${t[this.rank-2]}) {
        ++${s[this.rank-2]};
        result.z = ${l};
        if (++${r[this.rank-1]} < ${t[this.rank-1]}) {
          ++${s[this.rank-1]};
          result.w = ${l};
        }
      }
    `,m=this.rank<=4?`sourceLoc = coords +
            ${e}(${t.map((y,b)=>`start[${b}]`).join()});`:t.map((y,b)=>`${s[b]} = ${r[b]} + start[${b}];`).join(`
`);this.userCode=`
      uniform int start[${this.rank}];
      void main() {
        ${e} coords = getOutputCoords();
        ${e} sourceLoc;
        ${m}
        vec4 result = vec4(0.);
        ${h}
        ${p}
        setOutput(result);
      }
    `}getCustomSetupFunc(t){if(t.length!==this.rank)throw Error(`The rank (${this.rank}) of the program must match the length of start (${t.length})`);return(e,r)=>{if(this.startLoc==null&&(this.startLoc=e.getUniformLocationNoThrow(r,"start"),this.startLoc==null))return;e.gl.uniform1iv(this.startLoc,t)}}}class $7{constructor(t,e,r){this.variableNames=["x"],this.outputShape=r;let s=r.length,u=We(r.length),l=We(r.length),h="";if(s===1)h="coords * strides + begin";else{let p=0;h=r.map((m,y)=>(p++,r.length===1?`coords * strides[${y}] + begin[${y}]`:`coords[${p-1}] * strides[${y}] + begin[${y}]`)).join(",")}this.userCode=`
      ${u} begin = ${u}(${t});
      ${u} strides = ${u}(${e});

      void main() {
        ${l} coords = getOutputCoords();
        setOutput(getX(${h}));
      }
    `}}class A7{constructor(t){this.gpgpu=t,this.numUsedTextures=0,this.numFreeTextures=0,this._numBytesAllocated=0,this._numBytesFree=0,this.freeTextures={},this.logEnabled=!1,this.usedTextures={}}acquireTexture(t,e,r){let s=fD(e,r),u=pD(t,s,r);u in this.freeTextures||(this.freeTextures[u]=[]),u in this.usedTextures||(this.usedTextures[u]=[]);let l=hD(t,s,this.gpgpu.gl,this.gpgpu.textureConfig,r);if(this.freeTextures[u].length>0){this.numFreeTextures--,this.numUsedTextures++,this._numBytesFree-=l,this.log();let p=this.freeTextures[u].shift();return this.usedTextures[u].push(p),p}let h;return s===Vn.PACKED_2X2_FLOAT32?h=this.gpgpu.createPackedMatrixTexture(t[0],t[1]):s===Vn.PACKED_2X2_FLOAT16?h=this.gpgpu.createFloat16PackedMatrixTexture(t[0],t[1]):s===Vn.UNPACKED_FLOAT32?h=this.gpgpu.createFloat32MatrixTexture(t[0],t[1]):s===Vn.UNPACKED_FLOAT16?h=this.gpgpu.createFloat16MatrixTexture(t[0],t[1]):s===Vn.PACKED_4X1_UNSIGNED_BYTE&&(h=this.gpgpu.createUnsignedBytesMatrixTexture(t[0],t[1])),this.usedTextures[u].push(h),this.numUsedTextures++,this._numBytesAllocated+=l,this.log(),h}releaseTexture(t,e,r,s){if(this.freeTextures==null)return;let u=fD(r,s),l=pD(e,u,s);l in this.freeTextures||(this.freeTextures[l]=[]);let h=hD(e,u,this.gpgpu.gl,this.gpgpu.textureConfig,s),p=ft().get("WEBGL_DELETE_TEXTURE_THRESHOLD");p!==-1&&this._numBytesAllocated>p?(this.gpgpu.deleteMatrixTexture(t),this._numBytesAllocated-=h):(this.freeTextures[l].push(t),this.numFreeTextures++,this._numBytesFree+=h),this.numUsedTextures--;let m=this.usedTextures[l],y=m.indexOf(t);if(y<0)throw new Error("Cannot release a texture that was never provided by this texture manager");m.splice(y,1),this.log()}log(){if(!this.logEnabled)return;let t=this.numFreeTextures+this.numUsedTextures;console.log("Free/Used",`${this.numFreeTextures} / ${this.numUsedTextures}`,`(${t})`);let e=this._numBytesFree/this._numBytesAllocated;console.log(`Bytes allocated: ${this._numBytesAllocated}`),console.log(`Bytes unused: ${this._numBytesFree} (${Math.round(100*e)}%)`)}get numBytesAllocated(){return this._numBytesAllocated}get numBytesFree(){return this._numBytesFree}getNumUsedTextures(){return this.numUsedTextures}getNumFreeTextures(){return this.numFreeTextures}dispose(){if(this.freeTextures==null)return;for(let t in this.freeTextures)this.freeTextures[t].forEach(e=>{this.gpgpu.deleteMatrixTexture(e)});for(let t in this.usedTextures)this.usedTextures[t].forEach(e=>{this.gpgpu.deleteMatrixTexture(e)});this.freeTextures=null,this.usedTextures=null,this.numUsedTextures=0,this.numFreeTextures=0,this._numBytesAllocated=0,this._numBytesFree=0}}function _7(n,t){let e=n;if(t===e.R32F)return 4;if(t===e.R16F)return 2;if(t===e.RGBA32F)return 16;if(t===n.RGBA)return 16;if(t===e.RGBA16F)return 8;throw new Error(`Unknown internal format ${t}`)}function hD(n,t,e,r,s){let u=F7(t,r),l;if(s){let[p,m]=ic(n[0],n[1]);l=p*m}else{let[p,m]=vf(n[0],n[1]);l=p*m}let h=_7(e,u);return l*h}function F7(n,t){switch(n){case Vn.PACKED_2X2_FLOAT32:return oD(t);case Vn.PACKED_2X2_FLOAT16:return aD(t);case Vn.UNPACKED_FLOAT32:return nD(t);case Vn.UNPACKED_FLOAT16:return rD(t);case Vn.PACKED_4X1_UNSIGNED_BYTE:return sD(t);default:throw new Error(`Unknown physical texture type ${n}`)}}function R7(n){return ft().getBool("WEBGL_RENDER_FLOAT32_ENABLED")?n?Vn.PACKED_2X2_FLOAT32:Vn.UNPACKED_FLOAT32:n?Vn.PACKED_2X2_FLOAT16:Vn.UNPACKED_FLOAT16}function fD(n,t){if(n===Hr.UPLOAD)return Vn.PACKED_2X2_FLOAT32;if(n===Hr.RENDER||n==null)return R7(t);if(n===Hr.DOWNLOAD||n===Hr.PIXELS)return Vn.PACKED_4X1_UNSIGNED_BYTE;throw new Error(`Unknown logical texture type ${n}`)}function pD(n,t,e){return`${n[0]}_${n[1]}_${t}_${e}`}class P7{constructor(t,e){this.variableNames=["A"];let r=new Array(t.length);for(let l=0;l<r.length;l++)r[l]=t[l]*e[l];this.outputShape=r,this.rank=r.length;let s=We(this.rank),u=O7(t);this.userCode=`
      void main() {
        ${s} resRC = getOutputCoords();
        setOutput(getA(${u}));
      }
    `}}function O7(n){let t=n.length;if(t>5)throw Error(`Tile for rank ${t} is not yet supported`);if(t===1)return`imod(resRC, ${n[0]})`;let e=["resRC.x","resRC.y","resRC.z","resRC.w","resRC.u"],r=[];for(let s=0;s<n.length;s++)r.push(`imod(${e[s]}, ${n[s]})`);return r.join()}class ye{constructor(t,e){this.variableNames=["A"],this.outputShape=t,this.userCode=`
      float unaryOperation(float x) {
        ${e}
      }

      void main() {
        float x = getAAtOutCoords();
        float y = unaryOperation(x);

        setOutput(y);
      }
    `}}let _o="if (isnan(x)) return x;",M7="return x;",dD="return abs(x);",mD=_o+`
  return (x < 0.0) ? 0.0 : x;
`,gD=_o+`
  return (x < 0.0) ? 0.0 : min(6.0, x);
`,vD="return (x >= 0.0) ? x : (exp(x) - 1.0);",L7=`
  // Stable and Attracting Fixed Point (0, 1) for Normalized Weights.
  // see: https://arxiv.org/abs/1706.02515
  float scaleAlpha = ${qd};
  float scale = ${jd};
  return (x >= 0.0) ? scale * x : scaleAlpha * (exp(x) - 1.0);
`;function B7(n=0){return _o+`
    return x > 0.0 ? 1.0 : float(${n});
  `}let yD="return -x;",bD="return ceil(x);",wD="return floor(x);",z7=`
  if (isnan(x)) { return 0.0; }
  return sign(x);
`,W7="return float(isnan(x));",V7="return float(isinf(x));",U7="return float(!isnan(x) && !isinf(x));",G7=`
  // OpenGL ES does not support round function.
  // The algorithm is based on banker's rounding.
  float base = floor(x);
  if ((x - base) < 0.5) {
    return floor(x);
  } else if ((x - base) > 0.5) {
    return ceil(x);
  } else {
    if (mod(base, 2.0) == 0.0) {
      return base;
    } else {
      return base + 1.0;
    }
  }
`,xD="return exp(x);",TD="return exp(x) - 1.0;",H7=`if (x < 0.0) return NAN;
  return log(x);`,q7="return log(1.0 + x);",j7="return sqrt(x);",K7="return inversesqrt(x);",X7="return 1.0 / (1.0 + exp(-1.0 * x));",Y7=`
  float epsilon = 1.1920928955078125e-7;
  float threshold = log(epsilon) + 2.0;

  bool too_large = x > -threshold;
  bool too_small = x < threshold;

  float result;
  float exp_x = exp(x);

  if (too_large){
    result = x;
  }
  else if (too_small){
    result = exp_x;
  }
  else{
    result = log(exp_x + 1.0);
  }
  return result;
`,J7=_o+`
  if (abs(x) > 1.) {
    return NAN;
  }
  return asin(x);
`,Z7=_o+`
  if (abs(x) > 1.) {
    return NAN;
  }
  return acos(x);
`,Q7=_o+`
  return atan(x);
`,tJ=`
  float e2x = exp(x);
  return (e2x - 1.0 / e2x) / 2.0;
`,eJ=`
  float e2x = exp(-x);
  return (e2x + 1.0 / e2x) / 2.0;
`,nJ=`
  float e2x = exp(-2.0 * abs(x));
  return sign(x) * (1.0 - e2x) / (1.0 + e2x);
`,rJ=_o+"return log(x + sqrt(x * x + 1.0));",sJ=_o+`
  if (x < 1.0) return NAN;
  return log(x + sqrt(x * x - 1.0));`,oJ=_o+`
  if ((x < -1.0) || (x > 1.0)) return NAN;
  return (log(1.0 + x) - log(1.0 - x)) / 2.0;`,aJ=`
  // Error function is calculated approximately with elementary function.
  // See "Handbook of Mathematical Functions with Formulas,
  // Graphs, and Mathematical Tables", Abramowitz and Stegun.
  float p = ${zb};
  float a1 = ${Wb};
  float a2 = ${Vb};
  float a3 = ${Ub};
  float a4 = ${Gb};
  float a5 = ${Hb};

  float sign = sign(x);
  x = abs(x);
  float t = 1.0 / (1.0 + p * x);
  return sign * (1.0 - (((((a5*t + a4)*t) + a3)*t + a2)*t + a1)*t*exp(-x*x));
`,iJ="return 1.0 / x;",uJ="return float(!(x >= 1.0));",Hm="return x;";let cJ="return x;",lJ=`
  vec4 result = log(x);
  vec4 isNaN = vec4(lessThan(x, vec4(0.0)));
  result.r = isNaN.r == 1.0 ? NAN : result.r;
  result.g = isNaN.g == 1.0 ? NAN : result.g;
  result.b = isNaN.b == 1.0 ? NAN : result.b;
  result.a = isNaN.a == 1.0 ? NAN : result.a;

  return result;
`,kD=`
  vec4 result = x * vec4(greaterThanEqual(x, vec4(0.0)));
  bvec4 isNaN = isnan(x);

  result.r = isNaN.r ? x.r : result.r;
  result.g = isNaN.g ? x.g : result.g;
  result.b = isNaN.b ? x.b : result.b;
  result.a = isNaN.a ? x.a : result.a;

  return result;
`,SD=`
  vec4 result = min(x, vec4(6.)) * vec4(greaterThanEqual(x, vec4(0.0)));
  bvec4 isNaN = isnan(x);

  result.r = isNaN.r ? x.r : result.r;
  result.g = isNaN.g ? x.g : result.g;
  result.b = isNaN.b ? x.b : result.b;
  result.a = isNaN.a ? x.a : result.a;

  return result;
`,CD=`
  vec4 result;

  result.r = (x.r >= 0.0) ? x.r : (exp(x.r) - 1.0);
  result.g = (x.g >= 0.0) ? x.g : (exp(x.g) - 1.0);
  result.b = (x.b >= 0.0) ? x.b : (exp(x.b) - 1.0);
  result.a = (x.a >= 0.0) ? x.a : (exp(x.a) - 1.0);

  return result;
`;class Tf{constructor(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.userCode=`
      vec4 unaryOperation(vec4 x) {
        ${e}
      }

      void main() {
        vec4 x = getAAtOutCoords();
        vec4 y = unaryOperation(x);

        setOutput(y);
      }
    `}}class hJ{constructor(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!1,this.outputShape=t;let e=t.length,r=nr("rc",e),s=We(e),u=tX(e,r),l=r.slice(-2),h=e<=1?"rc":`vec2(${l.join(",")})`;this.userCode=`
      void main() {
        ${s} rc = getOutputCoords();
        vec4 packedInput = getA(${u});

        setOutput(getChannel(packedInput, ${h}));
      }
    `}}let{segment_util:ND}=Kb,fJ=Xb,pJ=Yb,dJ=Jb,mJ=Pd,gJ=1e-7,vJ=1e-4,qm={};function yJ(n){return n in qm||(qm[n]={}),qm[n]}function jm(n,t=!1){if(n==="linear")return t?cJ:M7;if(n==="relu")return t?kD:mD;if(n==="elu")return t?CD:vD;if(n==="relu6")return t?SD:gD;if(n==="prelu")return t?XE:KE;throw new Error(`Activation ${n} has not been implemented for the WebGL backend.`)}let bJ=128,wJ=600;function xJ(){return ft().global.screen==null?1024:ft().global.screen.height*ft().global.screen.width*window.devicePixelRatio*wJ/1024/1024}let ID=1e3;class TJ extends f{constructor(t){super();if(this.pendingRead=new WeakMap,this.pendingDisposal=new WeakSet,this.dataRefCount=new WeakMap,this.numBytesInGPU=0,this.uploadWaitMs=0,this.downloadWaitMs=0,this.warnedAboutMemory=!1,this.warnedAboutCPUBackend=!1,this.pendingDeletes=0,this.disposed=!1,!ft().getBool("HAS_WEBGL"))throw new Error("WebGL is not supported on this device");if(t==null){let e=eo(ft().getNumber("WEBGL_VERSION"));this.binaryCache=yJ(ft().getNumber("WEBGL_VERSION")),this.gpgpu=new JY(e),this.canvas=e.canvas,this.gpgpuCreatedLocally=!0}else this.gpgpu=t,this.binaryCache={},this.gpgpuCreatedLocally=!1,this.canvas=t.gl.canvas;this.textureManager=new A7(this.gpgpu),this.numMBBeforeWarning=xJ(),this.texData=new c(this,yo())}numDataIds(){return this.texData.numDataIds()+(this.cpuBackend?this.cpuBackend.numDataIds():0)-this.pendingDeletes}write(t,e,r){if((ft().getBool("WEBGL_CHECK_NUMERICAL_PROBLEMS")||ft().getBool("DEBUG"))&&this.checkNumericalProblems(t),r==="complex64"&&t!=null)throw new Error("Cannot write to a complex64 dtype. Please use tf.complex(real, imag).");let s={};return this.texData.set(s,{shape:e,dtype:r,values:t,usage:Hr.UPLOAD,refCount:1,complexParentRefCount:0}),s}incRef(t){let e=this.texData.get(t);e.refCount++}decRef(t){if(this.texData.has(t)){let e=this.texData.get(t);e.refCount--}}move(t,e,r,s){if(ft().getBool("DEBUG")&&this.checkNumericalProblems(e),s==="complex64")throw new Error("Cannot write to a complex64 dtype. Please use tf.complex(real, imag).");this.texData.set(t,{shape:r,dtype:s,values:e,usage:Hr.UPLOAD,refCount:1,complexParentRefCount:0})}disposeIntermediateTensorInfo(t){let e=t.dataId;if(this.texData.has(e)){let r=this.texData.get(e);r.refCount--,r.refCount<1&&this.disposeData(e)}}readSync(t){let e=this.texData.get(t),{values:r,dtype:s,complexTensorInfos:u,slice:l,shape:h,isPacked:p}=e;if(l!=null){let x;p?x=new Tf(h,Hm):x=new ye(h,Hm);let S=this.runWebGLProgram(x,[{dataId:t,shape:h,dtype:s}],s),C=this.readSync(S.dataId);return this.disposeIntermediateTensorInfo(S),C}if(r!=null)return this.convertAndCacheOnCPU(t);if(s==="string")return r;let m=this.activeTimers!=null,y;m&&(y=cr());let b;if(s==="complex64"){let x=this.readSync(u.real.dataId),S=this.readSync(u.imag.dataId);b=So(x,S)}else b=this.getValuesFromTexture(t);return m&&(this.downloadWaitMs+=cr()-y),this.convertAndCacheOnCPU(t,b)}async read(t){if(this.pendingRead.has(t)){let C=this.pendingRead.get(t);return new Promise(I=>C.push(I))}let e=this.texData.get(t),{values:r,shape:s,slice:u,dtype:l,complexTensorInfos:h,isPacked:p}=e;if(u!=null){let C;p?C=new Tf(s,Hm):C=new ye(s,Hm);let I=this.runWebGLProgram(C,[{dataId:t,shape:s,dtype:l}],l),D=this.read(I.dataId);return this.disposeIntermediateTensorInfo(I),D}if(r!=null)return this.convertAndCacheOnCPU(t);if(!ft().getBool("WEBGL_DOWNLOAD_FLOAT_ENABLED")&&ft().getNumber("WEBGL_VERSION")===2)throw new Error("tensor.data() with WEBGL_DOWNLOAD_FLOAT_ENABLED=false and WEBGL_VERSION=2 not yet supported.");let m=null,y;if(l!=="complex64"&&ft().get("WEBGL_BUFFER_SUPPORTED")){y=this.decode(t);let C=this.texData.get(y.dataId);m=this.gpgpu.createBufferFromTexture(C.texture,...yf(s))}this.pendingRead.set(t,[]),l!=="complex64"&&await this.gpgpu.createAndWaitForFence();let b;if(l==="complex64"){let C=await Promise.all([this.read(h.real.dataId),this.read(h.imag.dataId)]),I=C[0],D=C[1];b=So(I,D)}else if(m==null)b=this.getValuesFromTexture(t);else{let C=O(s);b=this.gpgpu.downloadFloat32MatrixFromBuffer(m,C)}y!=null&&this.disposeIntermediateTensorInfo(y);let x=this.convertAndCacheOnCPU(t,b),S=this.pendingRead.get(t);return this.pendingRead.delete(t),S.forEach(C=>C(x)),this.pendingDisposal.has(t)&&(this.pendingDisposal.delete(t),this.disposeData(t),this.pendingDeletes--),x}checkNumericalProblems(t){if(t==null)return;for(let e=0;e<t.length;e++){let r=t[e];if(!f8(r))throw ft().getBool("WEBGL_RENDER_FLOAT32_CAPABLE")?Error(`The value ${r} cannot be represented with your current settings. Consider enabling float32 rendering: 'tf.env().set('WEBGL_RENDER_FLOAT32_ENABLED', true);'`):Error(`The value ${r} cannot be represented on this device.`)}}getValuesFromTexture(t){let{shape:e,dtype:r,isPacked:s}=this.texData.get(t),u=O(e);if(ft().getBool("WEBGL_DOWNLOAD_FLOAT_ENABLED")){let x=this.decode(t),S=this.texData.get(x.dataId),C=this.gpgpu.downloadMatrixFromPackedTexture(S.texture,...yf(e)).subarray(0,u);return this.disposeIntermediateTensorInfo(x),C}let l=ft().getBool("WEBGL_PACK")&&s===!0,h=l?ox(e):e,p=l?new EY(h):new IY(h),m=this.runWebGLProgram(p,[{shape:h,dtype:r,dataId:t}],"float32"),y=this.texData.get(m.dataId),b=this.gpgpu.downloadByteEncodedFloatMatrixFromOutputTexture(y.texture,y.texShape[0],y.texShape[1]).subarray(0,u);return this.disposeIntermediateTensorInfo(m),b}async time(t){let e=this.activeTimers,r=[],s=!1;this.programTimersStack==null?(this.programTimersStack=r,s=!0):this.activeTimers.push(r),this.activeTimers=r,t();let u=G(this.activeTimers.map(p=>p.query)).filter(p=>p!=null),l=G(this.activeTimers.map(p=>p.name)).filter(p=>p!=null);this.activeTimers=e,s&&(this.programTimersStack=null);let h={uploadWaitMs:this.uploadWaitMs,downloadWaitMs:this.downloadWaitMs,kernelMs:null,wallMs:null};if(ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0){let p=await Promise.all(u);h.kernelMs=T(p),h.getExtraProfileInfo=()=>p.map((m,y)=>({name:l[y],ms:m})).map(m=>`${m.name}: ${m.ms}`).join(", ")}else h.kernelMs={error:"WebGL query timers are not supported in this environment."};return this.uploadWaitMs=0,this.downloadWaitMs=0,h}memory(){return{unreliable:!1,numBytesInGPU:this.numBytesInGPU,numBytesInGPUAllocated:this.textureManager.numBytesAllocated,numBytesInGPUFree:this.textureManager.numBytesFree}}startTimer(){return ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0?this.gpgpu.beginQuery():{startMs:cr(),endMs:null}}endTimer(t){return ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0?(this.gpgpu.endQuery(),t):(t.endMs=cr(),t)}async getQueryTime(t){if(ft().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_RELIABLE")>0)return this.gpgpu.waitForQueryAndGetTime(t);let e=t;return e.endMs-e.startMs}disposeData(t){if(this.pendingDisposal.has(t))return;if(this.pendingRead.has(t)){this.pendingDisposal.add(t),this.pendingDeletes++;return}if(!this.texData.has(t))return;if(this.texData.get(t).complexParentRefCount>0){this.texData.get(t).refCount--;return}this.releaseGPUData(t);let{complexTensorInfos:e}=this.texData.get(t);e!=null&&(this.texData.get(e.real.dataId).complexParentRefCount--,this.disposeIntermediateTensorInfo(e.real),this.texData.get(e.imag.dataId).complexParentRefCount--,this.disposeIntermediateTensorInfo(e.imag)),this.texData.delete(t)}releaseGPUData(t){let{texture:e,dtype:r,texShape:s,usage:u,isPacked:l,slice:h}=this.texData.get(t),p=h&&h.origDataId||t,m=this.dataRefCount.get(p);m>1?this.dataRefCount.set(p,m-1):(this.dataRefCount.delete(p),e!=null&&(this.numBytesInGPU-=this.computeBytes(s,r),this.textureManager.releaseTexture(e,s,u,l)));let y=this.texData.get(t);y.texture=null,y.texShape=null,y.isPacked=!1,y.slice=null}getTexture(t){return this.uploadToGPU(t),this.texData.get(t).texture}getDataInfo(t){return this.texData.get(t)}getCPUBackend(){return ft().getBool("WEBGL_CPU_FORWARD")?(this.cpuBackend==null&&(this.cpuBackend=yo().findBackend("cpu")),this.cpuBackend):null}shouldExecuteOnCPU(t,e=bJ){let r=this.getCPUBackend();return!this.warnedAboutCPUBackend&&r==null&&(console.warn("Your application contains ops that are small enough to be executed on the CPU backend, however the CPU backend cannot be found. Consider importing the CPU backend (@tensorflow/tfjs-backend-cpu) for better performance."),this.warnedAboutCPUBackend=!0),r!=null&&t.every(s=>this.texData.get(s.dataId).texture==null&&O(s.shape)<e)}getGPGPUContext(){return this.gpgpu}slice(t,e,r){if(this.shouldExecuteOnCPU([t])){let l=K8(this.texData.get(t.dataId).values,e,r,t.shape,t.dtype);return this.makeOutput(r,t.dtype,l)}if(O(r)===0)return vn([],r,t.dtype);let{isPacked:s}=this.texData.get(t.dataId),u=zy(t.shape,e,r);if(s||!u){let l=ft().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new D7(r):new I7(r),h=l.getCustomSetupFunc(e);return this.compileAndRun(l,[t],null,h)}return this.uploadToGPU(t.dataId),this.shallowSlice(t,e,r)}shallowSlice(t,e,r){let s=this.texData.get(t.dataId),u=this.makeOutput(r,t.dtype),l=this.texData.get(u.dataId);Object.assign(l,s),l.shape=r,l.dtype=t.dtype;let h=Wy(e,t.strides);s.slice&&(h+=s.slice.flatOffset),l.slice={flatOffset:h,origDataId:s.slice&&s.slice.origDataId||t.dataId};let p=this.dataRefCount.get(l.slice.origDataId)||1;return this.dataRefCount.set(l.slice.origDataId,p+1),u}stridedSlice(t,e,r,s){let u=this.tryRunOnCpuOrThrow([t],()=>this.cpuBackend.stridedSlice(t,e,r,s));if(u)return u;let l=sd(e,r,s);if(l.some(p=>p===0))return vn([],l);let h=new $7(e,s,l);return this.compileAndRun(h,[t])}reverse(t,e){let r=ft().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new S7(t.shape,e):new k7(t.shape,e);return this.compileAndRun(r,[t])}neg(t){let e=this.tryRunOnCpuOrThrow([t],()=>this.cpuBackend.neg(t));if(e)return e;if(ft().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,yD,t.dtype);let r=new ye(t.shape,yD);return this.compileAndRun(r,[t])}batchMatMul(t,e,r,s){let u=r?t.shape[2]:t.shape[1],l=s?e.shape[1]:e.shape[2],h=r?t.shape[1]:t.shape[2],p=Math.max(t.shape[0],e.shape[0]);if((u===1||l===1)&&h>ID){r&&(t=re(t,[0,2,1])),s&&(e=re(e,[0,2,1]));let b=l===1?t:t.as3D(p,h,1),x=l===1?2:1,S=l===1?e.as3D(p,1,h):e,C=st(b,S);return C.sum(x,!0)}let m=Qn(t.dtype,e.dtype),y=new cx(t.shape,e.shape,[p,u,l],r,s);return this.compileAndRun(y,[t,e],m)}fusedBatchMatMul({a:t,b:e,transposeA:r,transposeB:s,bias:u,activation:l,preluActivationWeights:h}){let p=r?t.shape[2]:t.shape[1],m=s?e.shape[1]:e.shape[2],y=Math.max(t.shape[0],e.shape[0]),b=Qn(t.dtype,e.dtype),x=u!=null,S=h!=null,C=l?jm(l,!0):null,I=new cx(t.shape,e.shape,[y,p,m],r,s,x,C,S),D=[t,e];return u&&D.push(u),h&&D.push(h),this.compileAndRun(I,D,b)}localResponseNormalization4D(t,e,r,s,u){let l=ft().getBool("WEBGL_PACK_NORMALIZATION")?new o7(t.shape,e,r,s,u):new r7(t.shape,e,r,s,u);return this.compileAndRun(l,[t])}LRNGrad(t,e,r,s,u,l,h){let p=new s7(e.shape,s,u,l,h);return this.compileAndRun(p,[e,r,t])}tile(t,e){if(t.dtype==="string"){let s=this.readSync(t.dataId),u=s.map(h=>rh(h)),l=Ae(t.shape,t.dtype,u);return pJ(l,e)}let r=new P7(t.shape,e);return this.compileAndRun(r,[t])}pad(t,e,r){let s=ft().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new g7(t.shape,e,r):new m7(t.shape,e,r);return this.compileAndRun(s,[t])}gather(t,e,r){let s=this.tryRunOnCpuOrThrow([t,e],()=>this.cpuBackend.gather(t,e,r));if(s)return s;let u=new _Y(t.shape,e.size,r);return this.compileAndRun(u,[t,e])}batchToSpaceND(t,e,r){k(t.rank<=4,()=>"batchToSpaceND for rank > 4 with a WebGL backend not implemented yet");let s=e.reduce((y,b)=>y*b),u=Mh(t.shape,e,s),l=Lh(u.length,e.length),h=Bh(t.shape,e,s),p=Lb(r,e.length),m=Bb(h,r,e.length);return re(t.reshape(u),l).reshape(h).slice(p,m)}spaceToBatchND(t,e,r){k(t.rank<=4,()=>"spaceToBatchND for rank > 4 with a WebGL backend not implemented yet");let s=e.reduce((b,x)=>b*x),u=[[0,0]];u.push(...r);for(let b=1+e.length;b<t.shape.length;++b)u.push([0,0]);let l=t.pad(u),h=Mh(l.shape,e,s,!1),p=Lh(h.length,e.length,!1),m=Bh(l.shape,e,s,!1),y=re(l.reshape(h),p);return rt(y,m)}reduce(t,e,r){let s=t.shape[0],u=t.shape[1],l=yh(u),h=Math.ceil(u/l),p={windowSize:l,inSize:u,batchSize:s,outSize:h},m=new uD(p,e),y=this.compileAndRun(m,[t],r);return y.shape[1]===1?y:this.reduce(y,e,r)}argReduce(t,e,r=null){let s=t.shape[0],u=t.shape[1];r!=null&&(s=r.shape[0],u=r.shape[1]);let l=yh(u),h={windowSize:l,inSize:u,batchSize:s,outSize:Math.ceil(u/l)},p=new Q8(h,e,r==null),m=[t];r!=null&&m.push(r);let y=this.compileAndRun(p,m,"int32");return y.shape[1]===1?y:this.argReduce(t,e,y)}argReducePacked(t,e,r=null){let s=r!=null?r.shape:t.shape,u=s[s.length-1],l=yh(u),h=new MX(s,l,e,r==null),p=r==null?[t]:[t,r],m=this.compileAndRun(h,p,"int32");return m.rank===t.rank?this.argReducePacked(t,e,m):m}sum(t,e){lr("sum",e,t.rank);let[r,s]=Bn(t.shape,e),u=O(s),l=t.as2D(-1,u),h=Kp(t.dtype);return this.reduce(l,"sum",h).reshape(r)}prod(t,e){let r=this.tryRunOnCpuOrThrow([t],()=>this.cpuBackend.prod(t,e));if(r)return r;let[s,u]=Bn(t.shape,e),l=O(u),h=t.as2D(-1,l),p=Kp(t.dtype);return this.reduce(h,"prod",p).reshape(s)}unsortedSegmentSum(t,e,r){let s=0,u=hr([s],t.rank),l=t;u!=null&&(l=re(t,u),s=Cr(1,t.rank)[0]);let h=ND.computeOutShape(l.shape,s,r),p=O([l.shape[s]]),m=l.as2D(-1,p),y=Kp(t.dtype),b=this.segOpCompute(m,"unsortedSegmentSum",e,y,r).reshape(h);return u!=null&&(b=re(b,lh(u))),b}segOpCompute(t,e,r,s,u){let l=t.shape[0],h=t.shape[1],p=ND.segOpComputeOptimalWindowSize(h,u),m={windowSize:p,inSize:h,batchSize:l,numSegments:u},y=new C7(m,e),b=this.compileAndRun(y,[t,r],s);return b.shape[1]===u?b:(r=Ch(0,u).tile([h/p]),this.segOpCompute(b,e,r,s,u))}argMinMaxReduce(t,e,r){let s=[e];if(lr("arg"+r.charAt(0).toUpperCase()+r.slice(1),s,t.rank),!ft().getBool("WEBGL_PACK_REDUCE")||t.rank<=2){let[u,l]=Bn(t.shape,s),h=O(l),p=t.as2D(-1,h);return this.argReduce(p,r).reshape(u)}return this.argReducePacked(t,r)}argMin(t,e){return this.argMinMaxReduce(t,e,"min")}argMax(t,e){return this.argMinMaxReduce(t,e,"max")}cumsum(t,e,r,s){if(e!==t.rank-1)throw new Error(`WebGL cumsum shader expects an inner-most axis=${t.rank-1} but got axis=${e}`);let u=t.shape[e],l=t;for(let h=0;h<=Math.ceil(Math.log2(u))-1;h++){let p=new QE(t.shape,!1,s),m=p.getCustomSetupFunc(h),y=l;l=this.compileAndRun(p,[l],l.dtype,m),y.dispose()}if(r){let h=new QE(t.shape,r,s),p=l;l=this.compileAndRun(h,[l]),p.dispose()}return l}equal(t,e){if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,nY,"bool");let r=new Yn(VX,t.shape,e.shape);return this.compileAndRun(r,[t,e],"bool")}less(t,e){let r=this.tryRunOnCpuOrThrow([t,e],()=>this.cpuBackend.less(t,e));if(r)return r;if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,rY,"bool");let s=new Yn(UX,t.shape,e.shape);return this.compileAndRun(s,[t,e],"bool")}lessEqual(t,e){if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,sY,"bool");let r=new Yn(GX,t.shape,e.shape);return this.compileAndRun(r,[t,e],"bool")}greater(t,e){let r=this.tryRunOnCpuOrThrow([t,e],()=>this.cpuBackend.greater(t,e));if(r)return r;if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,oY,"bool");let s=new Yn(HX,t.shape,e.shape);return this.compileAndRun(s,[t,e],"bool")}greaterEqual(t,e){if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,aY,"bool");let r=new Yn(qX,t.shape,e.shape);return this.compileAndRun(r,[t,e],"bool")}logicalNot(t){let e=new ye(t.shape,uJ);return this.compileAndRun(e,[t])}logicalAnd(t,e){if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,iY,"bool");let r=new Yn(jX,t.shape,e.shape);return this.compileAndRun(r,[t,e],"bool")}logicalOr(t,e){if(ft().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,uY,"bool");let r=new Yn(KX,t.shape,e.shape);return this.compileAndRun(r,[t,e],"bool")}select(t,e,r){let s=new N7(t.rank,e.shape,e.rank);return this.compileAndRun(s,[t,e,r],Qn(e.dtype,r.dtype))}where(t){Gu("tf.where() in webgl locks the UI thread. 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b.reshape(r)}gatherND(t,e){let r=e.shape,s=r[r.length-1],[u,l,h,p]=nd(t,e),m=e.reshape([l,s]),y=t.reshape([t.size/h,h]),b=new RY(s,p,[l,h]),x=this.compileAndRun(b,[y,m]);return x.reshape(u)}fill(t,e,r){if(r=r||Us(e),r==="string"){let s=Kt(r,O(t));return s.fill(e),yo().makeTensor(s,t,r,this)}else{let s=new AY(t,e),u=s.getCustomSetupFunc(e);return this.compileAndRun(s,[],r,u)}}onesLike(t){if(t.dtype==="string")throw new Error("onesLike is not supported under string dtype");return this.fill(t.shape,1,t.dtype)}zerosLike(t){return this.fill(t.shape,t.dtype==="string"?"":0,t.dtype)}linspace(t,e,r){return jb(t,e,r)}makeTensorInfo(t,e,r){let s=this.write(r,t,e);return this.texData.get(s).usage=null,{dataId:s,shape:t,dtype:e}}makeOutput(t,e,r){let{dataId:s}=this.makeTensorInfo(t,e,r);return yo().makeTensorFromDataId(s,t,e,this)}unpackTensor(t){let e=new hJ(t.shape);return this.runWebGLProgram(e,[t],t.dtype)}packTensor(t){let e=new l7(t.shape),r=!0;return 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For complex64 dtypes, please separate the program into real and imaginary parts.");let D=this.texData.get(I.dataId);if(D.texture==null){if(!t.packedInputs&&O(I.shape)<=ft().getNumber("WEBGL_SIZE_UPLOAD_UNIFORM"))return{shape:I.shape,texData:null,isUniform:!0,uniformValues:D.values};t.packedInputs&&(D.isPacked=!0,D.shape=I.shape)}else if(!!D.isPacked!==!!t.packedInputs)I=D.isPacked?this.unpackTensor(I):this.packTensor(I),p.push(I),D=this.texData.get(I.dataId);else if(D.isPacked&&!zm(D.shape,I.shape)){let R=I,A=I.shape;I.shape=D.shape,I=this.packedReshape(I,A),p.push(I),D=this.texData.get(I.dataId),R.shape=A}return this.uploadToGPU(I.dataId),{shape:I.shape,texData:D,isUniform:!1}});this.uploadToGPU(l.dataId);let y={shape:l.shape,texData:h,isUniform:!1},b=e7(t,m,y),x=this.getAndSaveBinary(b,()=>QY(this.gpgpu,t,m,y)),S=this.activeTimers!=null,C;if(S&&(C=this.startTimer()),t7(this.gpgpu,x,m,y,s),p.forEach(I=>this.disposeIntermediateTensorInfo(I)),S&&(C=this.endTimer(C),this.activeTimers.push({name:t.constructor.name,query:this.getQueryTime(C)})),!ft().getBool("WEBGL_LAZILY_UNPACK")&&h.isPacked&&u===!1){let I=this.unpackTensor(l);return this.disposeIntermediateTensorInfo(l),I}return l}compileAndRun(t,e,r,s,u=!1){r=r||e[0].dtype;let l=this.runWebGLProgram(t,e,r,s,u);return yo().makeTensorFromDataId(l.dataId,l.shape,l.dtype)}getAndSaveBinary(t,e){return t in this.binaryCache||(this.binaryCache[t]=e()),this.binaryCache[t]}getTextureManager(){return this.textureManager}dispose(){if(this.disposed)return;if(!ft().getBool("IS_TEST")){let t=Object.keys(this.binaryCache);t.forEach(e=>{this.gpgpu.deleteProgram(this.binaryCache[e].webGLProgram),delete this.binaryCache[e]})}this.textureManager.dispose(),this.canvas!=null&&typeof HTMLCanvasElement!="undefined"&&this.canvas instanceof HTMLCanvasElement?this.canvas.remove():this.canvas=null,this.gpgpuCreatedLocally&&(this.gpgpu.program=null,this.gpgpu.dispose()),this.disposed=!0}floatPrecision(){return this.floatPrecisionValue==null&&(this.floatPrecisionValue=ot(()=>{if(!ft().get("WEBGL_RENDER_FLOAT32_ENABLED")){let t=ft().getBool("DEBUG");ft().set("DEBUG",!1);let e=this.abs(Ot(1e-8)).dataSync()[0];if(ft().set("DEBUG",t),e>0)return 32}return 16})),this.floatPrecisionValue}epsilon(){return this.floatPrecision()===32?gJ:vJ}uploadToGPU(t){let e=this.texData.get(t),{shape:r,dtype:s,values:u,texture:l,usage:h,isPacked:p}=e;if(l!=null)return;let m=this.activeTimers!=null,y;m&&(y=cr());let b=e.texShape;if(b==null&&(b=$8(r,p),e.texShape=b),u!=null){let x=ox(r),S,C=b[1],I=b[0],D=u instanceof Uint8Array;p?([C,I]=ic(b[0],b[1]),S=new $Y(x,[I,C],D)):S=new DY(x,[I,C],D);let R=this.makeTensorInfo([I,C],s);D?this.texData.get(R.dataId).usage=Hr.PIXELS:this.texData.get(R.dataId).usage=Hr.UPLOAD,this.gpgpu.uploadDenseMatrixToTexture(this.getTexture(R.dataId),C,I,u);let A=!0,L=this.runWebGLProgram(S,[R],s,null,A),_=this.texData.get(L.dataId);e.texture=_.texture,e.texShape=_.texShape,e.isPacked=_.isPacked,e.usage=_.usage,this.disposeIntermediateTensorInfo(R),this.texData.delete(L.dataId),e.values=null,m&&(this.uploadWaitMs+=cr()-y)}else{let x=this.acquireTexture(b,h,s,p);e.texture=x}}convertAndCacheOnCPU(t,e){let r=this.texData.get(t),{dtype:s}=r;return this.releaseGPUData(t),e!=null&&(r.values=kJ(e,s)),r.values}acquireTexture(t,e,r,s){if(this.numBytesInGPU+=this.computeBytes(t,r),!this.warnedAboutMemory&&this.numBytesInGPU>this.numMBBeforeWarning*1024*1024){let u=(this.numBytesInGPU/1024/1024).toFixed(2);this.warnedAboutMemory=!0,console.warn(`High memory usage in GPU: ${u} MB, most likely due to a memory leak`)}return this.textureManager.acquireTexture(t,e,s)}computeBytes(t,e){return t[0]*t[1]*gn(e)}tryRunOnCpuOrThrow(t,e){if(this.shouldExecuteOnCPU(t))try{return e()}catch(r){if(ft().getBool("IS_TEST"))throw new Error("CPU forwarding failed")}return null}}function kJ(n,t){if(t==="float32"||t==="complex64")return n;if(t==="int32"||t==="bool"){let e=t==="int32"?new Int32Array(n.length):new Uint8Array(n.length);for(let r=0;r<e.length;++r)e[r]=Math.round(n[r]);return e}else throw new Error(`Unknown dtype ${t}`)}let SJ="2.7.0";function CJ(){ft().set("WEBGL_FORCE_F16_TEXTURES",!0)}Sy()&&Hy("webgl",()=>new TJ,2);let Hft={forceHalfFloat:CJ};function Fo(n){let{inputs:t,backend:e}=n,{x:r}=t;return e.incRef(r.dataId),{dataId:r.dataId,shape:r.shape,dtype:r.dtype}}let NJ={kernelName:Al,backendName:"webgl",kernelFunc:Fo};function dc(n){let{inputs:t,backend:e}=n,{real:r,imag:s}=t,u=e.makeTensorInfo(r.shape,"complex64"),l=e.texData.get(u.dataId),h=Fo({inputs:{x:r},backend:e}),p=e.texData.get(h.dataId);p.complexParentRefCount++;let m=Fo({inputs:{x:s},backend:e}),y=e.texData.get(m.dataId);return y.complexParentRefCount++,l.complexTensorInfos={real:h,imag:m},u}let IJ={kernelName:mp,backendName:"webgl",kernelFunc:dc};let ED="if (isnan(x)) return x;",EJ=`
  if (isnan(a)) return a;
  if (isnan(b)) return b;
`,DJ=`
  result.r = isNaN.r > 0. ? NAN : result.r;
  result.g = isNaN.g > 0. ? NAN : result.g;
  result.b = isNaN.b > 0. ? NAN : result.b;
  result.a = isNaN.a > 0. ? NAN : result.a;
`;function Km(n){return({inputs:t,backend:e})=>{let{x:r}=t,s=e,u=new ye(r.shape,n);return s.runWebGLProgram(u,[r],r.dtype)}}function mc({opSnippet:n,packedOpSnippet:t,checkOutOfBounds:e=!1,supportsComplex:r=!1,cpuKernelImpl:s,dtype:u}){return({inputs:l,backend:h})=>{let{a:p,b:m}=l,y=h;if(r&&p.dtype==="complex64"){let C=y.texData.get(p.dataId),I=y.texData.get(m.dataId),[D,R]=[[C.complexTensorInfos.real,I.complexTensorInfos.real],[C.complexTensorInfos.imag,I.complexTensorInfos.imag]].map(L=>{let[_,B]=L,V={dataId:_.dataId,dtype:_.dtype,shape:p.shape},q={dataId:B.dataId,dtype:B.dtype,shape:m.shape},j=new Yn(n,p.shape,m.shape);return y.runWebGLProgram(j,[V,q],Qn(_.dtype,B.dtype))}),A=dc({inputs:{real:D,imag:R},backend:y});return y.disposeIntermediateTensorInfo(D),y.disposeIntermediateTensorInfo(R),A}let b=u||Qn(p.dtype,m.dtype);if(y.shouldExecuteOnCPU([p,m])&&s!=null){let C=y.texData.get(p.dataId),I=y.texData.get(m.dataId),[D,R]=s(p.shape,m.shape,C.values,I.values,b),A=y.makeTensorInfo(R,b),L=y.texData.get(A.dataId);return L.values=D,A}let x=ft().getBool("WEBGL_PACK_BINARY_OPERATIONS")&&t!=null,S;return x?S=new Ao(t,p.shape,m.shape,e):S=new Yn(n,p.shape,m.shape),y.runWebGLProgram(S,[p,m],b)}}let DD="return a + b;",$J=mc({opSnippet:DD,packedOpSnippet:DD,supportsComplex:!0,cpuKernelImpl:B8}),AJ={kernelName:ri,backendName:"webgl",kernelFunc:$J};let _J=EJ+`
  return atan(a, b);
`,FJ=`
  vec4 result = atan(a, b);
  vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));
  `+DJ+`
  return result;
`,RJ=mc({opSnippet:_J,packedOpSnippet:FJ}),PJ={kernelName:fp,backendName:"webgl",kernelFunc:RJ};function OJ(n){let{inputs:t,backend:e,attrs:r}=n,{x:s}=t;bf(s,"avgPool");let{filterSize:u,strides:l,pad:h,dimRoundingMode:p}=r,m=1;k(wn(l,m),()=>`Error in avgPool: Either strides or dilations must be 1. Got strides ${l} and dilations '${m}'`);let y=tr(s.shape,u,l,m,h,p);if(y.filterWidth===1&&y.filterHeight===1&&K(y.inShape,y.outShape))return Fo({inputs:{x:s},backend:e});let b=new xf(y,"avg",!1);return e.runWebGLProgram(b,[s],"float32")}let MJ={kernelName:wl,backendName:"webgl",kernelFunc:OJ};function LJ(n){let{inputs:t,backend:e,attrs:r}=n,{dy:s,input:u}=t,l=u;bf([s,u],"avgPoolBackprop");let{filterSize:h,strides:p,pad:m}=r,y=tr(l.shape,h,p,1,m),b=new LX(y);return e.runWebGLProgram(b,[s],l.dtype)}let BJ={kernelName:pp,backendName:"webgl",kernelFunc:LJ};class zJ{constructor(t,e,r,s,u,l){this.outputShape=[],this.variableNames=["x","mean","variance"],ve(t,e),ve(t,r);let h="0.0";s!=null&&(ve(t,s),this.variableNames.push("offset"),h="getOffsetAtOutCoords()");let p="1.0";u!=null&&(ve(t,u),this.variableNames.push("scale"),p="getScaleAtOutCoords()"),this.outputShape=t,this.userCode=`
      void main() {
        float x = getXAtOutCoords();
        float mean = getMeanAtOutCoords();
        float variance = getVarianceAtOutCoords();
        float offset = ${h};
        float scale = ${p};
        float inv = scale * inversesqrt(variance + float(${l}));
        setOutput(dot(vec3(x, -mean, offset), vec3(inv, inv, 1)));
      }
    `}}class WJ{constructor(t,e,r,s,u,l){this.packedInputs=!0,this.packedOutput=!0,this.variableNames=["x","mean","variance"],ve(t,e),ve(t,r);let h="vec4(0.0)";s!=null&&(ve(t,s),this.variableNames.push("offset"),h="getOffsetAtOutCoords()");let p="vec4(1.0)";u!=null&&(ve(t,u),this.variableNames.push("scale"),p="getScaleAtOutCoords()"),this.outputShape=t,this.userCode=`
      void main() {
        vec4 offset = ${h};
        vec4 scale = ${p};

        vec4 x = getXAtOutCoords();
        vec4 mean = getMeanAtOutCoords();
        vec4 variance = getVarianceAtOutCoords();

        vec4 inv = scale * inversesqrt(variance + vec4(${l}));

        setOutput((x - mean) * inv + offset);
      }
    `}}let VJ=({inputs:n,backend:t,attrs:e})=>{let{x:r,mean:s,variance:u,offset:l,scale:h}=n;k(s.shape.length===u.shape.length,()=>"Batch normalization gradient requires mean and variance to have equal ranks."),k(l==null||s.shape.length===l.shape.length,()=>"Batch normalization gradient requires mean and offset to have equal ranks."),k(h==null||s.shape.length===h.shape.length,()=>"Batch normalization gradient requires mean and scale to have equal ranks.");let{varianceEpsilon:p}=e;p==null&&(p=.001);let m=[r,s,u],y=null;l!=null&&(y=l.shape,m.push(l));let b=null;h!=null&&(b=h.shape,m.push(h));let x=ft().getBool("WEBGL_PACK_NORMALIZATION")?new WJ(r.shape,s.shape,u.shape,y,b,p):new zJ(r.shape,s.shape,u.shape,y,b,p),S=t.runWebGLProgram(x,m,m[0].dtype);return S},UJ={kernelName:$l,backendName:"webgl",kernelFunc:VJ};let GJ="return float(a != b);",$D=mc({opSnippet:GJ,dtype:"bool"}),HJ={kernelName:zl,backendName:"webgl",kernelFunc:$D};function fx(n){let{inputs:t,backend:e}=n,{input:r}=t,s=e.texData.get(r.dataId);return Fo({inputs:{x:s.complexTensorInfos.real},backend:e})}let qJ={kernelName:Rp,backendName:"webgl",kernelFunc:fx};let jJ="return float(int(x));";function KJ(n,t){let e=new ye(n.shape,jJ),r=t.runWebGLProgram(e,[n],"int32");return{dataId:r.dataId,shape:r.shape,dtype:r.dtype}}function px(n){let{inputs:t,backend:e,attrs:r}=n,{x:s}=t,{dtype:u}=r;if(u==="complex64"){if(s.dtype==="complex64")return Fo({inputs:{x:s},backend:e});let l=Se(s.shape),h=px({inputs:{x:s},backend:e,attrs:{dtype:"float32"}}),p=dc({inputs:{real:h,imag:l},backend:e});return l.dispose(),e.disposeIntermediateTensorInfo(h),p}if(s.dtype==="complex64"){let l=fx({inputs:{input:s},backend:e}),h=px({inputs:{x:l},backend:e,attrs:{dtype:u}});return e.disposeIntermediateTensorInfo(l),h}if(!me(s.dtype,u)){let l=Fo({inputs:{x:s},backend:e});return{dataId:l.dataId,shape:l.shape,dtype:u}}if(u==="int32")return KJ(s,e);if(u==="bool"){let l=e.makeTensorInfo([],"bool",_t("bool",1)),h={a:s,b:l},p=$D({inputs:h,backend:e});return e.disposeIntermediateTensorInfo(l),p}throw new Error(`Error in Cast: failed to cast ${s.dtype} to ${u}`)}let XJ={kernelName:pu,backendName:"webgl",kernelFunc:px};class YJ{constructor(t){this.outputShape=[],this.outputShape=bo(t,1),this.variableNames=t.map((l,h)=>`T${h}`);let e=new Array(t.length-1);e[0]=t[0][1];for(let l=1;l<e.length;l++)e[l]=e[l-1]+t[l][1];let r=[`if (yC < ${e[0]}) setOutput(getT0(yR, yC));`];for(let l=1;l<e.length;l++){let h=e[l-1];r.push(`else if (yC < ${e[l]}) setOutput(getT${l}(yR, yC-${h}));`)}let s=e.length,u=e[e.length-1];r.push(`else setOutput(getT${s}(yR, yC-${u}));`),this.userCode=`
      void main() {
        ivec2 coords = getOutputCoords();
        int yR = coords.x;
        int yC = coords.y;

        ${r.join(`
        `)}
      }
    `}}class JJ{constructor(t,e){this.packedInputs=!0,this.packedOutput=!0,this.outputShape=[],this.outputShape=bo(t,e);let r=this.outputShape,s=r.length,u=We(s),l=nr("coords",s),h=["x","y","z","w","u","v"].slice(0,s);this.variableNames=t.map((I,D)=>`T${D}`);let p=new Array(t.length-1);p[0]=t[0][e];for(let I=1;I<p.length;I++)p[I]=p[I-1]+t[I][e];let m=h[e],y=h.slice(-2),b=h.join(),x=`if (${m} < ${p[0]}) {
        return getChannel(
            getT0(${b}), vec2(${y.join()}));
        }`;for(let I=1;I<p.length;I++){let D=p[I-1];x+=`
        if (${m} < ${p[I]}  && ${m} >= ${p[I-1]}) {
          return getChannel(
            getT${I}(${Xm(h,m,D)}),
            vec2(${Xm(y,m,D)}));
        }`}let S=p.length,C=p[p.length-1];x+=`
        return getChannel(
          getT${S}(${Xm(h,m,C)}),
          vec2(${Xm(y,m,C)}));`,this.userCode=`
      float getValue(${h.map(I=>"int "+I)}) {
        ${x}
      }

      void main() {
        ${u} coords = getOutputCoords();
        vec4 result = vec4(getValue(${l}), 0., 0., 0.);

        ${l[s-1]} = ${l[s-1]} + 1;
        if (${l[s-1]} < ${r[s-1]}) {
          result.g = getValue(${l});
        }

        ${l[s-2]} = ${l[s-2]} + 1;
        if (${l[s-2]} < ${r[s-2]}) {
          result.a = getValue(${l});
        }

        ${l[s-1]} = ${l[s-1]} - 1;
        if (${l[s-2]} < ${r[s-2]} &&
            ${l[s-1]} < ${r[s-1]}) {
          result.b = getValue(${l});
        }
        setOutput(result);
      }
    `}}function Xm(n,t,e){let r=n.indexOf(t),s=n.map((u,l)=>l===r?`${u} - ${e}`:u);return s.join()}function AD(n){let{inputs:t,backend:e}=n,{input:r}=t,s=e.texData.get(r.dataId);return Fo({inputs:{x:s.complexTensorInfos.imag},backend:e})}let ZJ={kernelName:Np,backendName:"webgl",kernelFunc:AD};function QJ(n,t,e){let r=[uc(n.shape),...cc(n.shape)],s={dtype:n.dtype,shape:r,dataId:n.dataId},u=[uc(t),...cc(t)],l=new cD(u,r),h=!0,p=e.runWebGLProgram(l,[s],n.dtype,null,h);return{dataId:p.dataId,shape:t,dtype:p.dtype}}function Ro(n){let{inputs:t,backend:e,attrs:r}=n,{x:s}=t,{shape:u}=r,l=e,h=O(s.shape),p=Gt(u,h),m=O(p);k(h===m,()=>`The new shape (${p}) has ${m} elements and the old shape (${s.shape}) has ${h} elements. The new shape and old shape must have the same number of elements.`);let y=l.texData.get(s.dataId);return y.isPacked&&!zm(s.shape,p)&&!(y.texture!==null&&zm(y.shape,p))?QJ(s,p,l):(l.incRef(s.dataId),{dataId:s.dataId,shape:p,dtype:s.dtype})}let t9={kernelName:Ul,backendName:"webgl",kernelFunc:Ro};function gc(n,t,e){let r=n[0].dtype;if(r==="complex64"){let m=n.map(C=>fx({inputs:{input:C},backend:e})),y=n.map(C=>AD({inputs:{input:C},backend:e})),b=gc(m,t,e),x=gc(y,t,e),S=dc({inputs:{real:b,imag:x},backend:e});return m.forEach(C=>e.disposeIntermediateTensorInfo(C)),y.forEach(C=>e.disposeIntermediateTensorInfo(C)),e.disposeIntermediateTensorInfo(b),e.disposeIntermediateTensorInfo(x),S}if(n.length>ft().getNumber("WEBGL_MAX_TEXTURES_IN_SHADER")){let m=Math.floor(n.length/2),y=gc(n.slice(0,m),t,e),b=gc(n.slice(m),t,e),x=gc([y,b],t,e);return e.disposeIntermediateTensorInfo(y),e.disposeIntermediateTensorInfo(b),x}if(ft().getBool("WEBGL_PACK_ARRAY_OPERATIONS")&&n[0].shape.length>1){let m=new JJ(n.map(y=>y.shape),t);return e.runWebGLProgram(m,n,r)}let s=bo(n.map(m=>m.shape),t),u=n.map(m=>Ro({inputs:{x:m},attrs:{shape:[-1,O(m.shape.slice(t))]},backend:e})),l=new YJ(u.map(m=>m.shape)),h=e.runWebGLProgram(l,u,r);u.forEach(m=>e.disposeIntermediateTensorInfo(m));let p=Ro({inputs:{x:h},attrs:{shape:s},backend:e});return e.disposeIntermediateTensorInfo(h),p}function e9(n){let{inputs:t,backend:e,attrs:r}=n,{axis:s}=r,u=Et(s,t[0].shape)[0],l=bo(t.map(m=>m.shape),u);if(O(l)===0)return e.makeTensorInfo(l,t[0].dtype,[]);let h=t.filter(m=>O(m.shape)>0);if(h.length===1)return h[0];let p=h.map(m=>m.shape);return fd(p,u),gc(h,u,e)}let n9={kernelName:kl,backendName:"webgl",kernelFunc:e9};let r9=ED+`
  return cos(x);
`,s9=Km(r9),o9={kernelName:du,backendName:"webgl",kernelFunc:s9};let a9=`
if (a == b) {
  return 1.0;
};
return a / b;`,i9=`
  // vec4 one = vec4(equal(a, b));
  // return one + (vec4(1.0) - one) * a / b;
  vec4 result = a / b;
  if(a.x == b.x) {
    result.x = 1.;
  }
  if(a.y == b.y) {
    result.y = 1.;
  }
  if(a.z == b.z) {
    result.z = 1.;
  }
  if(a.w == b.w) {
    result.w = 1.;
  }

  return result;
`,u9=mc({opSnippet:a9,packedOpSnippet:i9,checkOutOfBounds:!0}),c9={kernelName:mu,backendName:"webgl",kernelFunc:u9};class _D{constructor(t,e,r){this.variableNames=["real","imag"];let s=e[1];this.outputShape=e;let u=r?`2.0 * ${Math.PI}`:`-2.0 * ${Math.PI}`,l=r?`${s}.0`:"1.0",h;if(t==="real")h="return real * expR - imag * expI;";else if(t==="imag")h="return real * expI + imag * expR;";else throw new Error(`FFT component must be either "real" or "imag", got ${t}.`);this.userCode=`
      const float exponentMultiplier = ${u};

      float unaryOpComplex(float real, float expR, float imag, float expI) {
        ${h}
      }

      float mulMatDFT(int batch, int index) {
        float indexRatio = float(index) / float(${s});
        float exponentMultiplierTimesIndexRatio =
            exponentMultiplier * indexRatio;

        float result = 0.0;

        for (int i = 0; i < ${s}; i++) {
          // x = (-2|2 * PI / N) * index * i;
          float x = exponentMultiplierTimesIndexRatio * float(i);
          float expR = cos(x);
          float expI = sin(x);
          float real = getReal(batch, i);
          float imag = getImag(batch, i);

          result +=
              unaryOpComplex(real, expR, imag, expI) / ${l};
        }

        return result;
      }

      void main() {
        ivec2 coords = getOutputCoords();
        setOutput(mulMatDFT(coords[0], coords[1]));
      }
    `}}function FD(n,t,e){let r=e.texData.get(n.dataId),s=O(n.shape),u=n.shape[n.shape.length-1],l=s/u,h=Ro({inputs:{x:n},backend:e,attrs:{shape:[l,u]}}),p=h.shape,m=new _D("real",p,t),y=new _D("imag",p,t),b=[{dataId:r.complexTensorInfos.real.dataId,dtype:r.complexTensorInfos.real.dtype,shape:p},{dataId:r.complexTensorInfos.imag.dataId,dtype:r.complexTensorInfos.imag.dtype,shape:p}],x=e.runWebGLProgram(m,b,"float32"),S=e.runWebGLProgram(y,b,"float32"),C=dc({inputs:{real:x,imag:S},backend:e});e.disposeIntermediateTensorInfo(x),e.disposeIntermediateTensorInfo(S);let I=Ro({inputs:{x:C},backend:e,attrs:{shape:n.shape}});return e.disposeIntermediateTensorInfo(I),I}function l9(n){let{inputs:t,backend:e}=n,{input:r}=t;return FD(r,!1,e)}let h9={kernelName:kp,backendName:"webgl",kernelFunc:l9};class f9{constructor(t){this.variableNames=["Image"],this.outputShape=[];let e=t[2];this.outputShape=t,this.userCode=`
        void main() {
          ivec4 coords = getOutputCoords();
          int x = coords[2];

          int coordX = ${e} - x;
          float outputValue;
          if(coordX >= 0 && coordX < ${e}) {
            outputValue = getImage(coords[0], coords[1], coordX, coords[3]);
          } else {
            outputValue = getImage(coords[0], coords[1], coords[2], coords[3]);
          }
          setOutput(outputValue);
        }
    `}}let p9={kernelName:Sp,backendName:"webgl",kernelFunc:({inputs:n,backend:t})=>{let{image:e}=n,r=t,s=new f9(e.shape),u=r.runWebGLProgram(s,[e],e.dtype);return u}};class d9{constructor(t){this.variableNames=["A"];let e=rr(),[r,s]=t;this.outputShape=t,this.userCode=`
      void main() {
        ivec3 coords = getOutputCoords();
        int texR = coords[0];
        int texC = coords[1];
        int depth = coords[2];
        vec2 uv = (vec2(texC, texR) + halfCR) / vec2(${s}.0, ${r}.0);

        vec4 values = ${e.texture2D}(A, uv);
        float value;
        if (depth == 0) {
          value = values.r;
        } else if (depth == 1) {
          value = values.g;
        } else if (depth == 2) {
          value = values.b;
        } else if (depth == 3) {
          value = values.a;
        }

        setOutput(floor(value * 255.0 + 0.5));
      }
    `}}class m9{constructor(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0;let e=rr(),[r,s]=t;this.outputShape=t,this.userCode=`
      void main() {
        ivec3 coords = getOutputCoords();
        int texR = coords[0];
        int texC = coords[1];
        int depth = coords[2];

        vec4 result = vec4(0.);

        for(int row=0; row<=1; row++) {
          for(int col=0; col<=1; col++) {
            texC = coords[1] + row;
            depth = coords[2] + col;

            vec2 uv = (vec2(texC, texR) + halfCR) /
                       vec2(${s}.0, ${r}.0);
            vec4 values = ${e.texture2D}(A, uv);
            float value;
            if (depth == 0) {
              value = values.r;
            } else if (depth == 1) {
              value = values.g;
            } else if (depth == 2) {
              value = values.b;
            } else if (depth == 3) {
              value = values.a;
            }

            result[row * 2 + col] = floor(value * 255.0 + 0.5);
          }
        }

        ${e.output} = result;
      }
    `}}let g9={kernelName:Bp,backendName:"webgl",kernelFunc:v9},vc;function v9(n){let{inputs:t,backend:e,attrs:r}=n,{pixels:s}=t,{numChannels:u}=r,l=typeof HTMLVideoElement!="undefined"&&s instanceof HTMLVideoElement,h=typeof HTMLImageElement!="undefined"&&s instanceof HTMLImageElement,[p,m]=l?[s.videoWidth,s.videoHeight]:[s.width,s.height],y=[m,p],b=[m,p,u];(h||l)&&(vc==null&&(vc=document.createElement("canvas").getContext("2d")),vc.canvas.width=p,vc.canvas.height=m,vc.drawImage(s,0,0,p,m),s=vc.canvas);let x=e.makeTensorInfo(y,"int32");e.texData.get(x.dataId).usage=Hr.PIXELS,e.gpgpu.uploadPixelDataToTexture(e.getTexture(x.dataId),s);let S=ft().getBool("WEBGL_PACK")?new m9(b):new d9(b),C=e.runWebGLProgram(S,[x],"int32");return e.disposeData(x.dataId),C}function y9(n){let{inputs:t,backend:e}=n,{input:r}=t;return FD(r,!0,e)}let b9={kernelName:Cp,backendName:"webgl",kernelFunc:y9};class RD{constructor(t,e){this.variableNames=["x"];let{windowSize:r,batchSize:s,inSize:u,outSize:l}=t;this.outputShape=[s,l];let h=Math.floor(r/4)*4,p=r%4,m="sumValue += dot(values, ones);";if(e!=null){let b=1/e;m=`sumValue += dot(values * ${nt(b)?b.toPrecision(2):b}, ones);`}let y="";u%r>0&&(y=`
        if (inIdx < 0 || inIdx >= ${u}) {
          return 0.0;
        }
      `),this.userCode=`
      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);

      float getValue(int batch, int inIdx) {
        ${y}
        return getX(batch, inIdx);
      }

      void main() {
        ivec2 coords = getOutputCoords();
        int batch = coords[0];
        int outIdx = coords[1];
        int inOffset = outIdx * ${r};

        float sumValue = 0.0;

        for (int i = 0; i < ${h}; i += 4) {
          int inIdx = inOffset + i;
          vec4 values = vec4(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            getValue(batch, inIdx + 2),
            getValue(batch, inIdx + 3)
          );

          ${m}
        }

        int inIdx = inOffset + ${h};
        if (${p===1}) {
          vec4 values = vec4(getValue(batch, inIdx), 0.0, 0.0, 0.0);

          ${m}
        } else if (${p===2}) {
          vec4 values = vec4(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1), 0.0, 0.0);

          ${m}
        } else if (${p===3}) {
          vec4 values = vec4(
            getValue(batch, inIdx),
            getValue(batch, inIdx + 1),
            getValue(batch, inIdx + 2), 0.0);

          ${m}
        }
        setOutput(sumValue);
      }
    `}}function w9(n){let t=[];for(;t.length===0||t[t.length-1].outSize!==1;){let e=t.length?t[t.length-1].outSize:n[1],r=yh(e);t.push({inSize:e,windowSize:r,outSize:Math.ceil(e/r)})}return t}function PD(n,t,e,r){let s=w9(n.shape),u=n;for(let l=0;l<s.length;l++){let{inSize:h,windowSize:p,outSize:m}=s[l],y,b;e==="mean"?y=l===0?new RD({windowSize:p,inSize:h,batchSize:n.shape[0],outSize:m},h):new RD({windowSize:p,inSize:h,batchSize:n.shape[0],outSize:m}):y=new uD({windowSize:p,inSize:h,batchSize:n.shape[0],outSize:m},e),b=u,u=r.runWebGLProgram(y,[u],t),b.dataId!==n.dataId&&r.disposeIntermediateTensorInfo(b)}return u}function x9(n,t,e,r){let s=O(t),u=O(n.shape),l=u/s,h=Ro({inputs:{x:n},attrs:{shape:[l,s]},backend:r}),p=PD(h,n.dtype,"max",r),m=Ro({inputs:{x:p},attrs:{shape:e},backend:r});return r.disposeIntermediateTensorInfo(h),r.disposeIntermediateTensorInfo(p),m}class T9{constructor(t,e){this.variableNames=["A"];let r=new Array(t.length);for(let l=0;l<r.length;l++)r[l]=t[e[l]];this.outputShape=r,this.rank=r.length;let s=We(this.rank),u=k9(e);this.userCode=`
    void main() {
      ${s} resRC = getOutputCoords();
      setOutput(getA(${u}));
    }
    `}}function k9(n){let t=n.length;if(t>6)throw Error(`Transpose for rank ${t} is not yet supported`);let e=["resRC.x","resRC.y","resRC.z","resRC.w","resRC.u","resRC.v"],r=new Array(t);for(let s=0;s<n.length;s++)r[n[s]]=e[s];return r.join()}class S9{constructor(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0;let r=new Array(t.length);for(let y=0;y<r.length;y++)r[y]=t[e[y]];if(this.outputShape=r,this.rank=r.length,this.rank>6)throw Error(`Packed transpose for rank ${this.rank} is not yet supported.`);let s=We(this.rank),u=VE("rc",this.rank),l=new Array(this.rank);for(let y=0;y<e.length;y++)l[e[y]]=u[y];let h=`vec2(${l.slice(-2).join()})`,p=`++${u[this.rank-1]} < ${r[this.rank-1]}`,m=`getChannel(getA(${l.join()}), ${h})`;this.userCode=`
    void main() {
      ${s} rc = getOutputCoords();
      vec4 result = vec4(0.);
      result[0] = ${m};
      if(${p}) {
        result[1] = ${m};
      }
      --${u[this.rank-1]};
      if(++${u[this.rank-2]} < ${r[this.rank-2]}) {
        result[2] = ${m};
        if(${p}) {
          result[3] = ${m};
        }
      }
      setOutput(result);
    }
    `}}function dx(n,t,e){let r=ft().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new S9(n.shape,t):new T9(n.shape,t);return e.runWebGLProgram(r,[n],n.dtype)}let C9={kernelName:Ml,backendName:"webgl",kernelFunc:({inputs:n,attrs:t,backend:e})=>{let{x:r}=n,{reductionIndices:s,keepDims:u}=t,l=e,h=r.shape.length,p=Et(s,r.shape),m=p,y=hr(m,h),b=y!=null,x=l.shouldExecuteOnCPU([r]),S=r;if(b){if(x){let A=l.texData.get(S.dataId),L=A.values,_=new Array(h);for(let q=0;q<_.length;q++)_[q]=r.shape[y[q]];let B=ix(L,r.shape,r.dtype,y,_);S=l.makeTensorInfo(_,r.dtype);let V=l.texData.get(S.dataId);V.values=B}else S=dx(r,y,l);m=Cr(m.length,h)}lr("max",m,h);let[C,I]=Bn(S.shape,m),D=C;u&&(D=zn(C,p));let R;if(x){let A=l.texData.get(S.dataId),L=A.values,_=H8(L,O(I),D,r.dtype);R=l.makeTensorInfo(D,r.dtype);let B=l.texData.get(R.dataId);B.values=_}else R=x9(S,I,D,l);return b&&l.disposeIntermediateTensorInfo(S),R}};function N9(n){let{inputs:t,backend:e,attrs:r}=n,{x:s}=t;bf(s,"maxPool");let{filterSize:u,strides:l,pad:h,dimRoundingMode:p}=r,m=1;k(wn(l,m),()=>`Error in maxPool: Either strides or dilations must be 1. Got strides ${l} and dilations '${m}'`);let y=tr(s.shape,u,l,m,h,p);if(y.filterWidth===1&&y.filterHeight===1&&K(y.inShape,y.outShape))return Fo({inputs:{x:s},backend:e});let b=new xf(y,"max",!1);return e.runWebGLProgram(b,[s],s.dtype)}let I9={kernelName:Ll,backendName:"webgl",kernelFunc:N9};function E9(n){let{inputs:t,backend:e,attrs:r}=n,{dy:s,input:u,output:l}=t,h=u;bf([u,l],"maxPoolBackprop");let{filterSize:p,strides:m,pad:y,dimRoundingMode:b}=r,x=tr(h.shape,p,m,1,y,b),S=!0,C=new xf(x,"max",S),I=e.runWebGLProgram(C,[h],h.dtype),D=new a7(x),R=e.runWebGLProgram(D,[s,I],h.dtype);return e.disposeIntermediateTensorInfo(I),R}let D9={kernelName:Ep,backendName:"webgl",kernelFunc:E9};function $9(n,t,e,r){let s=new xf(e,"max",!1),u=r.runWebGLProgram(s,[n],"float32");s=new xf(e,"max",!0,!0,t);let l=r.runWebGLProgram(s,[n],"float32");return[u,l]}let A9={kernelName:Dp,backendName:"webgl",kernelFunc:({inputs:n,attrs:t,backend:e})=>{let{x:r}=n,{filterSize:s,strides:u,pad:l,includeBatchInIndex:h}=t,p=e;k(r.shape.length===4,()=>`Error in maxPool: input must be rank 4 but got rank ${r.shape.length}.`);let m=[1,1];k(wn(u,m),()=>`Error in maxPool: Either strides or dilations must be 1. Got strides ${u} and dilations '${m}'`);let y=tr(r.shape,s,u,m,l),[b,x]=$9(r,h,y,p);return[b,x]}};function _9(n,t,e,r){let s=O(t),u=O(n.shape),l=u/s,h=Ro({inputs:{x:n},attrs:{shape:[l,s]},backend:r}),p=PD(h,"float32","mean",r),m=Ro({inputs:{x:p},attrs:{shape:e},backend:r});return r.disposeIntermediateTensorInfo(h),r.disposeIntermediateTensorInfo(p),m}let F9={kernelName:Yv,backendName:"webgl",kernelFunc:({inputs:n,attrs:t,backend:e})=>{let{x:r}=n,{keepDims:s,axis:u}=t,l=e,h=r.shape.length,p=Et(u,r.shape),m=p,y=hr(m,h),b=y!=null,x=l.shouldExecuteOnCPU([r]),S=[],C=r;if(b){if(x){let L=l.texData.get(C.dataId),_=L.values,B=new Array(h);for(let j=0;j<B.length;j++)B[j]=r.shape[y[j]];let V=ix(_,r.shape,r.dtype,y,B);C=l.makeTensorInfo(B,r.dtype);let q=l.texData.get(C.dataId);q.values=V}else C=dx(r,y,l);S.push(C),m=Cr(m.length,h)}lr("sum",m,h);let[I,D]=Bn(C.shape,m),R=I;s&&(R=zn(I,p));let A=_9(C,D,R,l);for(let L of S)l.disposeIntermediateTensorInfo(L);return A}};class R9{constructor(t,e,r){this.variableNames=["x"],this.outputShape=e.map((y,b)=>y[0]+t[b]+y[1]);let s=t.length,u=We(s),l=e.map(y=>y[0]).join(","),h=e.map((y,b)=>y[0]+t[b]).join(","),p=["coords[0]","coords[1]","coords[2]","coords[3]"].slice(0,s),m=r==="reflect"?0:1;if(s===1){this.userCode=`
        int start = ${l};
        int end = ${h};

        void main() {
          int outC = getOutputCoords();
          if (outC < start) {
            outC = start * 2 - outC - ${m};
          } else if(outC >= end) {
            outC = (end - 1) * 2 - outC + ${m};
          }
          setOutput(getX(outC - start));
        }
      `;return}this.userCode=`
      ${u} start = ${u}(${l});
      ${u} end = ${u}(${h});

      void main() {
        ${u} outC = getOutputCoords();
        for (int i = 0; i < ${s}; i++) {
          if (outC[i] < start[i]) {
            outC[i] = start[i] * 2 - outC[i] - ${m};
          } else if(outC[i] >= end[i]) {
            outC[i] = (end[i] - 1) * 2 - outC[i] + ${m};
          }
        }
        ${u} coords = outC - start;
        setOutput(getX(${p}));
      }
    `}}class P9{constructor(t,e,r){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=e.map((C,I)=>C[0]+t[I]+C[1]);let s=t.length,u=We(s),l=e.map(C=>C[0]).join(","),h=e.map((C,I)=>C[0]+t[I]).join(","),p=nr("rc",s),m=nr("source",s),y=`${p[s-1]} < ${this.outputShape[s-1]}`,b=s===1?"source":`vec2(${m.slice(-2).join()})`,x=r==="reflect"?0:1,S="";if(s===1){let C=`
        ${u} source = rc;
        if (source < start) {
          source = start * 2 - source - ${x};
        } else if (source >= end) {
          source = (end - 1) * 2 - source + ${x};
        }
        source -= start;
      `;S=`
        ${u} rc = outputLoc;
        ${C}
        result[0] = getChannel(getX(${m.join()}), ${b});
        ${p[s-1]} += 1;
        if(${y}) {
          ${C}
          result[1] = getChannel(getX(${m.join()}), ${b});
        }
      `}else{let C=`
        ${u} source = rc;
        ${u} lt = ${u}(lessThan(source, start));
        ${u} gte = ${u}(greaterThanEqual(source, end));
        ${u} orig = 1 - (lt + gte);
        source = orig * source +
                lt * (start * 2 - source - ${x}) +
                gte * ((end - 1) * 2 - source + ${x});
        source -= start;
      `;S=`
        ${u} rc = outputLoc;
        ${C}
        result[0] = getChannel(getX(${m.join()}), ${b});
        ${p[s-1]} += 1;
        if(${y}) {
          ${C}
          result[1] = getChannel(getX(${m.join()}), ${b});
        }
        rc = outputLoc;
        ${p[s-2]} += 1;
        if(${p[s-2]} < ${this.outputShape[s-2]}) {
          ${C}
          result[2] = getChannel(getX(${m.join()}), ${b});
          ${p[s-1]} += 1;
          if(${y}) {
            ${C}
            result[3] = getChannel(getX(${m.join()}), ${b});
          }
        }
      `}this.userCode=`
      const ${u} start = ${u}(${l});
      const ${u} end = ${u}(${h});

      void main() {
        ${u} outputLoc = getOutputCoords();
        vec4 result = vec4(0.);
        ${S}
        setOutput(result);
      }
    `}}let O9=({inputs:n,backend:t,attrs:e})=>{let{x:r}=n,{paddings:s,mode:u}=e,l=ft().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new P9(r.shape,s,u):new R9(r.shape,s,u),h=t.runWebGLProgram(l,[r],r.dtype);return h},M9={kernelName:Bl,backendName:"webgl",kernelFunc:O9};let OD={REAL:"return areal * breal - aimag * bimag;",IMAG:"return areal * bimag + aimag * breal;"};class MD{constructor(t,e,r){this.variableNames=["AReal","AImag","BReal","BImag"],this.outputShape=ve(e,r),this.userCode=`
      float binaryOpComplex(
          float areal, float aimag, float breal, float bimag) {
        ${t}
      }

      void main() {
        float areal = getARealAtOutCoords();
        float aimag = getAImagAtOutCoords();
        float breal = getBRealAtOutCoords();
        float bimag = getBImagAtOutCoords();
        setOutput(binaryOpComplex(areal, aimag, breal, bimag));
      }
    `}}let LD="return a * b;";function L9(n){let{inputs:t,backend:e}=n,{a:r,b:s}=t,u=Qn(r.dtype,s.dtype);if(r.dtype==="complex64"){let h=e.texData.get(r.dataId),p=e.texData.get(s.dataId),m=new MD(OD.REAL,r.shape,s.shape),y=new MD(OD.IMAG,r.shape,s.shape),b=[{dataId:h.complexTensorInfos.real.dataId,dtype:h.complexTensorInfos.real.dtype,shape:r.shape},{dataId:h.complexTensorInfos.imag.dataId,dtype:h.complexTensorInfos.imag.dtype,shape:r.shape},{dataId:p.complexTensorInfos.real.dataId,dtype:p.complexTensorInfos.real.dtype,shape:s.shape},{dataId:p.complexTensorInfos.imag.dataId,dtype:p.complexTensorInfos.imag.dtype,shape:s.shape}],x=e.runWebGLProgram(m,b,"float32"),S=e.runWebGLProgram(y,b,"float32"),C=dc({inputs:{real:x,imag:S},backend:e});return e.disposeIntermediateTensorInfo(x),e.disposeIntermediateTensorInfo(S),C}if(e.shouldExecuteOnCPU([r,s])){let h=e.texData.get(r.dataId),p=e.texData.get(s.dataId),[m,y]=q8(r.shape,s.shape,h.values,p.values,u),b=e.makeTensorInfo(y,u),x=e.texData.get(b.dataId);return x.values=m,b}let l;return ft().getBool("WEBGL_PACK_BINARY_OPERATIONS")?l=new Ao(LD,r.shape,s.shape):l=new Yn(LD,r.shape,s.shape),e.runWebGLProgram(l,[r,s],u)}let B9={kernelName:gu,backendName:"webgl",kernelFunc:L9};let z9={kernelName:ey,backendName:"webgl",kernelFunc:({inputs:n,backend:t,attrs:e})=>{Gu("tf.nonMaxSuppression() in webgl locks the UI thread. Call tf.nonMaxSuppressionAsync() instead");let{boxes:r,scores:s}=n,{maxOutputSize:u,iouThreshold:l,scoreThreshold:h}=e,p=t,m=p.readSync(r.dataId),y=p.readSync(s.dataId),b=u,x=l,S=h;return Vd(m,y,b,x,S)}};let W9=Ud,V9={kernelName:$p,backendName:"webgl",kernelFunc:({inputs:n,backend:t,attrs:e})=>{Gu("tf.nonMaxSuppression() in webgl locks the UI thread. Call tf.nonMaxSuppressionAsync() instead");let{boxes:r,scores:s}=n,{maxOutputSize:u,iouThreshold:l,scoreThreshold:h,padToMaxOutputSize:p}=e,m=t,y=m.readSync(r.dataId),b=m.readSync(s.dataId),{selectedIndices:x,validOutputs:S}=W9(y,b,u,l,h,p);return[x,S]}};let U9=Gd,G9={kernelName:Ap,backendName:"webgl",kernelFunc:({inputs:n,backend:t,attrs:e})=>{Gu("tf.nonMaxSuppression() in webgl locks the UI thread. Call tf.nonMaxSuppressionAsync() instead");let{boxes:r,scores:s}=n,{maxOutputSize:u,iouThreshold:l,scoreThreshold:h,softNmsSigma:p}=e,m=t,y=m.readSync(r.dataId),b=m.readSync(s.dataId),x=u,S=l,C=h,I=p,{selectedIndices:D,selectedScores:R}=U9(y,b,x,S,C,I);return[D,R]}};class H9{constructor(t,e,r,s){this.variableNames=["Image"],this.outputShape=[];let u=t[1],l=t[2],h=Math.sin(e).toFixed(3),p=Math.cos(e).toFixed(3);this.outputShape=t;let[m,y]=Mb(s,u,l),b=m.toFixed(3),x=y.toFixed(3),S="";typeof r=="number"?S=`float outputValue = ${r.toFixed(2)};`:S=`
        vec3 fill = vec3(${r.join(",")});
        float outputValue = fill[coords[3]];`,this.userCode=`
        void main() {
          ivec4 coords = getOutputCoords();
          int x = coords[2];
          int y = coords[1];
          float coordXFloat = (float(x) - ${b}) * ${p} - (float(y) - ${x}) * ${h};
          float coordYFloat = (float(x) - ${b}) * ${h} + (float(y) - ${x}) * ${p};
          int coordX = int(round(coordXFloat + ${b}));
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i=this,c=pg(a);c.forEach(function(f){f.disposeFunc!=null&&f.disposeFunc(i.registry[a])})},o.prototype.initializeBackend=function(a){var i=this,c=this.registryFactory[a];if(c==null)throw new Error("Cannot initialize backend "+a+", no registration found.");try{var f=c.factory();if(f&&!(f instanceof r$)&&typeof f.then=="function"){var d=++this.pendingBackendInitId,g=f.then(function(v){return d<i.pendingBackendInitId?!1:(i.registry[a]=v,i.pendingBackendInit=null,!0)}).catch(function(v){return d<i.pendingBackendInitId||(i.pendingBackendInit=null,console.warn("Initialization of backend "+a+" failed"),console.warn(v.stack||v.message)),!1});return this.pendingBackendInit=g,{success:g,asyncInit:!0}}else return this.registry[a]=f,{success:!0,asyncInit:!1}}catch(v){return console.warn("Initialization of backend "+a+" failed"),console.warn(v.stack||v.message),{success:!1,asyncInit:!1}}},o.prototype.removeBackend=function(a){if(!(a in this.registryFactory))throw new Error(a+" backend not found in registry");this.backendName===a&&this.pendingBackendInit!=null&&this.pendingBackendInitId++,a in this.registry&&(this.disposeRegisteredKernels(a),this.registry[a].dispose(),delete this.registry[a]),delete this.registryFactory[a],this.backendName===a&&(this.pendingBackendInit=null,this.backendName=null,this.backendInstance=null)},o.prototype.getSortedBackends=function(){var a=this;if(Object.keys(this.registryFactory).length===0)throw new Error("No backend found in registry.");return Object.keys(this.registryFactory).sort(function(i,c){return a.registryFactory[c].priority-a.registryFactory[i].priority})},o.prototype.initializeBackendsAndReturnBest=function(){for(var a=this.getSortedBackends(),i=0;i<a.length;i++){var c=a[i],f=this.initializeBackend(c),d=f.success,g=f.asyncInit;if(g||d)return{name:c,asyncInit:g}}throw new Error("Could not initialize any backends, all backend initializations failed.")},o.prototype.moveData=function(a,i){var c=this.state.tensorInfo.get(i),f=c.backend,d=this.readSync(i);f.disposeData(i),c.backend=a,a.move(i,d,c.shape,c.dtype),this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack[this.state.numDataMovesStack.length-1]++},o.prototype.tidy=function(a,i){var c=this,f=null;if(i==null){if(typeof a!="function")throw new Error("Please provide a function to tidy()");i=a}else{if(typeof a!="string"&&!(a instanceof String))throw new Error("When calling with two arguments, the first argument to tidy() must be a string");if(typeof i!="function")throw new Error("When calling with two arguments, the 2nd argument to tidy() must be a function");f=a}var d;return this.scopedRun(function(){return c.startScope(f)},function(){return c.endScope(d)},function(){return d=i(),d instanceof Promise&&console.error("Cannot return a Promise inside of tidy."),d})},o.prototype.scopedRun=function(a,i,c){a();try{var f=c();return i(),f}catch(d){throw i(),d}},o.prototype.nextTensorId=function(){return o.nextTensorId++},o.prototype.nextVariableId=function(){return o.nextVariableId++},o.prototype.clone=function(a){var i=this.makeTensorFromDataId(a.dataId,a.shape,a.dtype),c={x:a},f=function(g){return{x:function(){var v="float32",w={x:g},T={dtype:v};return Z.runKernelFunc(function(N){return N.cast(g,v)},w,null,fg,T)}}},d=[];return this.addTapeNode(this.state.activeScope.name,c,[i],f,d,{}),i},o.prototype.runKernel=function(a,i,c,f,d){var g=null,v=null;return this.runKernelFunc(g,i,v,a,c,f,d)},o.prototype.shouldCheckForMemLeaks=function(){return this.ENV.getBool("IS_TEST")},o.prototype.checkKernelForMemLeak=function(a,i,c){var f=this.backend.numDataIds(),d=0;c.forEach(function(w){d+=w.dtype==="complex64"?3:1});var g=this.state.numDataMovesStack[this.state.numDataMovesStack.length-1],v=f-i-d-g;if(v>0)throw new Error("Backend '"+this.backendName+"' has an internal memory leak "+("("+v+" data ids) after running '"+a+"'"))},o.prototype.runKernelFunc=function(a,i,c,f,d,g,v){var w=this,T,N=[],E=this.isTapeOn();f==null&&(f=this.state.activeScope!=null?this.state.activeScope.name:"");var k=this.state.numBytes,$=this.state.numTensors;this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack.push(0);var M,G=BT(f,this.backendName),O;if(G!=null)M=function(){var nt=w.backend.numDataIds();O=G.kernelFunc({inputs:i,attrs:d,backend:w.backend});var ct=Array.isArray(O)?O:[O];w.shouldCheckForMemLeaks()&&w.checkKernelForMemLeak(f,nt,ct);var dt=ct.map(function(It){var Gt=It.dataId,Et=It.shape,Wt=It.dtype;return w.makeTensorFromDataId(Gt,Et,Wt)});if(E){var Ct=w.getTensorsForGradient(f,i,dt);if(Ct==null){v==null&&(v=[]);var St=dt.filter(function(It,Gt){return v[Gt]});Ct=(g||[]).slice().concat(St)}N=w.saveTensorsForBackwardMode(Ct)}return dt};else{var H=function(nt){if(!E)return;N=nt.map(function(ct){return w.keep(w.clone(ct))})};M=function(){var nt=w.backend.numDataIds();O=w.tidy(function(){return a(w.backend,H)});var ct=Array.isArray(O)?O:[O];return w.shouldCheckForMemLeaks()&&w.checkKernelForMemLeak(f,nt,ct),ct}}var K;return this.scopedRun(function(){return w.state.kernelDepth++},function(){return w.state.kernelDepth--},function(){!w.ENV.getBool("DEBUG")&&!w.state.profiling?T=M():(K=w.profiler.profileKernel(f,i,function(){return M()}),w.ENV.getBool("DEBUG")&&w.profiler.logKernelProfile(K),T=K.outputs)}),E&&this.addTapeNode(f,i,T,c,N,d),this.state.profiling&&this.state.activeProfile.kernels.push({name:f,bytesAdded:this.state.numBytes-k,totalBytesSnapshot:this.state.numBytes,tensorsAdded:this.state.numTensors-$,totalTensorsSnapshot:this.state.numTensors,inputShapes:Object.keys(i).map(function(nt){return i[nt]!=null?i[nt].shape:null}),outputShapes:T.map(function(nt){return nt.shape}),kernelTimeMs:K.timeMs,extraInfo:K.extraInfo}),Array.isArray(O)?T:T[0]},o.prototype.saveTensorsForBackwardMode=function(a){var i=this,c=a.map(function(f){return i.keep(i.clone(f))});return c},o.prototype.getTensorsForGradient=function(a,i,c){var f=zT(a);if(f!=null){var d=f.inputsToSave||[],g=f.outputsToSave||[],v=void 0;f.saveAllInputs?(U(Array.isArray(i),function(){return"saveAllInputs is true, expected inputs to be an array."}),v=Object.keys(i).map(function(T){return i[T]})):v=d.map(function(T){return i[T]});var w=c.filter(function(T,N){return g[N]});return v.concat(w)}return null},o.prototype.makeTensor=function(a,i,c,f){if(a==null)throw new Error("Values passed to engine.makeTensor() are null");c=c||"float32",f=f||this.backend;var d=a;c==="string"&&Oa(a[0])&&(d=a.map(function(N){return WT(N)}));var g=f.write(d,i,c),v=new ut(i,c,g,this.nextTensorId());if(this.incRef(v,f),c==="string"){var w=this.state.tensorInfo.get(g),T=f$(d);this.state.numBytes+=T-w.bytes,w.bytes=T}return v},o.prototype.makeTensorFromDataId=function(a,i,c,f){c=c||"float32";var d=new ut(i,c,a,this.nextTensorId());return this.incRef(d,f),d},o.prototype.makeVariable=function(a,i,c,f){i===void 0&&(i=!0),c=c||this.nextVariableId().toString(),f!=null&&f!==a.dtype&&(a=a.cast(f));var d=new Bf(a,i,c,this.nextTensorId());if(this.state.registeredVariables[d.name]!=null)throw new Error("Variable with name "+d.name+" was already registered");return this.state.registeredVariables[d.name]=d,this.incRef(d,this.backend),d},o.prototype.incRef=function(a,i){var c=this.state.tensorInfo.has(a.dataId)?this.state.tensorInfo.get(a.dataId).refCount:0;if(this.state.numTensors++,a.dtype==="string"&&this.state.numStringTensors++,c===0){this.state.numDataBuffers++;var f=0;a.dtype!=="complex64"&&a.dtype!=="string"&&(f=a.size*h$(a.dtype)),this.state.tensorInfo.set(a.dataId,{backend:i||this.backend,dtype:a.dtype,shape:a.shape,bytes:f,refCount:0}),this.state.numBytes+=f}this.state.tensorInfo.get(a.dataId).refCount++,a instanceof Bf||this.track(a)},o.prototype.disposeTensor=function(a){if(!this.state.tensorInfo.has(a.dataId))return;this.state.numTensors--,a.dtype==="string"&&this.state.numStringTensors--;var i=this.state.tensorInfo.get(a.dataId),c=i.refCount;c<=1?(a.dtype!=="complex64"&&(this.state.numBytes-=i.bytes),this.state.numDataBuffers--,i.backend.disposeData(a.dataId),this.state.tensorInfo.delete(a.dataId)):this.state.tensorInfo.get(a.dataId).refCount--},o.prototype.disposeVariables=function(){for(var a in this.state.registeredVariables){var i=this.state.registeredVariables[a];this.disposeVariable(i)}},o.prototype.disposeVariable=function(a){this.disposeTensor(a),this.state.registeredVariables[a.name]!=null&&delete this.state.registeredVariables[a.name]},o.prototype.memory=function(){var a=this.backend.memory();return a.numTensors=this.state.numTensors,a.numDataBuffers=this.state.numDataBuffers,a.numBytes=this.state.numBytes,this.state.numStringTensors>0&&(a.unreliable=!0,a.reasons==null&&(a.reasons=[]),a.reasons.push("Memory usage by string tensors is approximate (2 bytes per character)")),a},o.prototype.profile=function(a){return qt(this,void 0,void 0,function(){var i,c,f,d,g,v,w,T;return jt(this,function(N){switch(N.label){case 0:return this.state.profiling=!0,i=this.state.numBytes,c=this.state.numTensors,this.state.activeProfile.kernels=[],f=this.state.activeProfile,[4,a()];case 1:f.result=N.sent(),this.state.profiling=!1,this.state.activeProfile.peakBytes=Math.max.apply(Math,this.state.activeProfile.kernels.map(function(E){return E.totalBytesSnapshot})),this.state.activeProfile.newBytes=this.state.numBytes-i,this.state.activeProfile.newTensors=this.state.numTensors-c,d=0,g=this.state.activeProfile.kernels,N.label=2;case 2:return d<g.length?(v=g[d],w=v,[4,v.kernelTimeMs]):[3,6];case 3:return w.kernelTimeMs=N.sent(),T=v,[4,v.extraInfo];case 4:T.extraInfo=N.sent(),N.label=5;case 5:return d++,[3,2];case 6:return[2,this.state.activeProfile]}})})},o.prototype.isTapeOn=function(){return this.state.gradientDepth>0&&this.state.kernelDepth===0},o.prototype.addTapeNode=function(a,i,c,f,d,g){var v=this,w={id:this.state.nextTapeNodeId++,kernelName:a,inputs:i,outputs:c,saved:d},T=zT(a);T!=null&&(f=T.gradFunc),f!=null&&(w.gradient=function(N){return N=N.map(function(E,k){if(E==null){var $=c[k],M=Ec($.size,$.dtype);return v.makeTensor(M,$.shape,$.dtype)}return E}),f(N.length>1?N:N[0],d,g)}),this.state.activeTape.push(w)},o.prototype.keep=function(a){return a.kept=!0,a},o.prototype.startTape=function(){this.state.gradientDepth===0&&(this.state.activeTape=[]),this.state.gradientDepth++},o.prototype.endTape=function(){this.state.gradientDepth--},o.prototype.startScope=function(a){var i={track:[],name:"unnamed scope",id:this.state.nextScopeId++};a&&(i.name=a),this.state.scopeStack.push(i),this.state.activeScope=i},o.prototype.endScope=function(a){for(var i=this,c=XT(a),f=new Set(c.map(function(w){return w.id})),d=0;d<this.state.activeScope.track.length;d++){var g=this.state.activeScope.track[d];!g.kept&&!f.has(g.id)&&g.dispose()}var v=this.state.scopeStack.pop();this.state.activeScope=this.state.scopeStack.length===0?null:this.state.scopeStack[this.state.scopeStack.length-1],c.forEach(function(w){!w.kept&&w.scopeId===v.id&&i.track(w)})},o.prototype.gradients=function(a,i,c,f){var d=this;if(f===void 0&&(f=!1),U(i.length>0,function(){return"gradients() received an empty list of xs."}),c!=null&&c.dtype!=="float32")throw new Error("dy must have 'float32' dtype, but has '"+c.dtype+"'");var g=this.scopedRun(function(){return d.startTape()},function(){return d.endTape()},function(){return d.tidy("forward",a)});U(g instanceof ut,function(){return"The result y returned by f() must be a tensor."});var v=TQ(this.state.activeTape,i,g);if(!f&&v.length===0&&i.length>0)throw new Error("Cannot compute gradient of y=f(x) with respect to x. Make sure that the f you passed encloses all operations that lead from x to y.");return this.tidy("backward",function(){var w={};w[g.id]=c==null?FQ(g.shape):c,kQ(w,v,function(N){return d.tidy(N)},RQ);var T=i.map(function(N){return w[N.id]});return d.state.gradientDepth===0&&(d.state.activeTape.forEach(function(N){for(var E=0,k=N.saved;E<k.length;E++){var $=k[E];$.dispose()}}),d.state.activeTape=null),{value:g,grads:T}})},o.prototype.customGrad=function(a){var i=this;return U(Ma(a),function(){return"The f passed in customGrad(f) must be a function."}),function(){for(var c=[],f=0;f<arguments.length;f++)c[f]=arguments[f];U(c.every(function(v){return v instanceof ut}),function(){return"The args passed in customGrad(f)(x1, x2,...) must all be tensors"});var d,g={};return c.forEach(function(v,w){g[w]=v}),i.runKernelFunc(function(v,w){return d=a.apply(void 0,c.concat([w])),U(d.value instanceof ut,function(){return"The function f passed in customGrad(f) must return an object where `obj.value` is a tensor"}),U(Ma(d.gradFunc),function(){return"The function f passed in customGrad(f) must return an object where `obj.gradFunc` is a function."}),d.value},g,function(v,w){var T=d.gradFunc(v,w),N=Array.isArray(T)?T:[T];U(N.length===c.length,function(){return"The function f passed in customGrad(f) must return an object where `obj.gradFunc` is a function that returns the same number of tensors as inputs passed to f(...)."}),U(N.every(function(k){return k instanceof ut}),function(){return"The function f passed in customGrad(f) must return an object where `obj.gradFunc` is a function that returns a list of only tensors."});var E={};return N.forEach(function(k,$){E[$]=function(){return k}}),E})}},o.prototype.readSync=function(a){var i=this.state.tensorInfo.get(a);return i.backend.readSync(a)},o.prototype.read=function(a){var i=this.state.tensorInfo.get(a);return i.backend.read(a)},o.prototype.time=function(a){return qt(this,void 0,void 0,function(){var i,c;return jt(this,function(f){switch(f.label){case 0:return i=VT(),[4,this.backend.time(a)];case 1:return c=f.sent(),c.wallMs=VT()-i,[2,c]}})})},o.prototype.track=function(a){return this.state.activeScope!=null&&(a.scopeId=this.state.activeScope.id,this.state.activeScope.track.push(a)),a},Object.defineProperty(o.prototype,"registeredVariables",{get:function(){return this.state.registeredVariables},enumerable:!0,configurable:!0}),o.prototype.reset=function(){this.pendingBackendInitId++,this.state.dispose(),this.ENV.reset(),this.state=new kA;for(var a in this.registry)this.disposeRegisteredKernels(a),this.registry[a].dispose(),delete this.registry[a];this.backendName=null,this.backendInstance=null,this.pendingBackendInit=null},o.nextTensorId=0,o.nextVariableId=0,o}();function FQ(o){var a=qx(mn(o),"float32");return Z.makeTensor(a,o,"float32")}function SA(){var o=y$();if(o._tfengine==null){var a=new v$(o);o._tfengine=new PQ(a)}return cQ(o._tfengine.ENV),NQ(function(){return o._tfengine}),o._tfengine}var Z=SA();function RQ(o,a){var i={a:o,b:a};return Z.runKernelFunc(function(c,f){var d=c.add(o,a);return f([o,a]),d},i,null,hg)}function OQ(){return typeof navigator!="undefined"&&navigator!=null}function MQ(){if(OQ()){var o=navigator.userAgent||navigator.vendor||window.opera;return/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(o)||/1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s 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Go=Fe();Go.registerFlag("DEBUG",function(){return!1},function(o){o&&console.warn("Debugging mode is ON. 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")+"Labels and predictions should have the same number of elements."}),U(i>0&&Number.isInteger(i),function(){return"numClasses is required to be a positive integer, but got "+(""+i)});var d=wg(Bt(c,"int32"),i),g=wg(Bt(f,"int32"),i),v=On(d),w=Ce(v,g);return Bt(w,"int32")}var ztt=Y({confusionMatrix_:Btt});var Wtt={__proto__:null,confusionMatrix:ztt};function HA(o,a,i){if(zi(o),a!=null&&a.length!==3)throw new Error("tensor3d() requires shape to have three numbers");var c=uo(o,i);if(c.length!==3&&c.length!==1)throw new Error("tensor3d() requires values to be number[][][] or flat/TypedArray");if(c.length===1&&a==null)throw new Error("tensor3d() requires shape to be provided when `values` are a flat array");return Ba(o,a,c,i)}var Pc;function Vtt(o,a){if(a===void 0&&(a=3),a>4)throw new Error("Cannot construct Tensor with more than 4 channels from pixels.");if(o==null)throw new Error("pixels passed to tf.browser.fromPixels() can not be null");var i=!1,c=!1,f=!1,d=!1,g=!1;if(o.data instanceof Uint8Array)i=!0;else if(typeof ImageData!="undefined"&&o instanceof ImageData)c=!0;else if(typeof HTMLVideoElement!="undefined"&&o instanceof HTMLVideoElement)f=!0;else if(typeof HTMLImageElement!="undefined"&&o instanceof HTMLImageElement)d=!0;else if(o.getContext!=null)g=!0;else throw new Error("pixels passed to tf.browser.fromPixels() must be either an HTMLVideoElement, HTMLImageElement, HTMLCanvasElement, ImageData in browser, or OffscreenCanvas, ImageData in webworker or {data: Uint32Array, width: number, height: number}, "+("but was "+o.constructor.name));if(f){var v=2;if(f&&o.readyState<v)throw new Error("The video element has not loaded data yet. 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Please use float32 or int32 tensors.");return[4,i.data()];case 1:for(w=K.sent(),T=i.dtype==="float32"?255:1,N=new Uint8ClampedArray(g*d*4),E=0;E<d*g;++E){for(k=[0,0,0,255],$=0;$<v;$++){if(M=w[E*v+$],i.dtype==="float32"){if(M<0||M>1)throw new Error("Tensor values for a float32 Tensor must be in the "+("range [0 - 1] but encountered "+M+"."))}else if(i.dtype==="int32"&&(M<0||M>255))throw new Error("Tensor values for a int32 Tensor must be in the "+("range [0 - 255] but encountered "+M+"."));v===1?(k[0]=M*T,k[1]=M*T,k[2]=M*T):k[$]=M*T}G=E*4,N[G+0]=Math.round(k[0]),N[G+1]=Math.round(k[1]),N[G+2]=Math.round(k[2]),N[G+3]=Math.round(k[3])}return a!=null&&(a.width=g,a.height=d,O=a.getContext("2d"),H=new ImageData(N,g,d),O.putImageData(H,0,0)),i!==o&&i.dispose(),[2,N]}})})}var Gtt=Y({fromPixels_:Vtt}),Htt={__proto__:null,toPixels:Utt,fromPixels:Gtt};function qA(o,a){if(o.rank<1)throw new Error("tf.gatherND() expects the input to be rank 1 or higher,"+(" but the rank was "+o.rank+"."));if(a.rank<1)throw new Error("tf.gatherND() expects the indices to be rank 1 or higher,"+(" but the rank was "+a.rank+"."));if(a.dtype!=="int32")throw new Error("tf.gatherND() expects the indices to be int32 type,"+(" but the dtype was "+a.dtype+"."));if(a.shape[a.rank-1]>o.rank)throw new Error("index innermost dimension length must be <= tensor rank; saw: "+(a.shape[a.rank-1]+" vs. "+o.rank));if(o.size===0)throw new Error("Requested more than 0 entries, but input is empty."+(" Input shape: "+o.shape+"."));for(var i=a.shape,c=i[i.length-1],f=1,d=0;d<i.length-1;++d)f*=i[d];var g=o.shape,v=i.slice();v.pop();for(var w=1,d=c;d<o.rank;++d)w*=g[d],v.push(g[d]);var T=Nc(o.shape).map(function(N){return N/w}).concat([1]).slice(0,c);return[v,f,w,T]}var qtt={__proto__:null,prepareAndValidate:qA};function ik(o,a,i){var c=a.rank>1?a.shape[a.rank-1]:1,f=a.rank>1?a.rank-1:1,d="Must have updates.shape = indices.shape[:batchDim] + "+("shape[sliceDim:], got updates.shape: "+i.shape)+(", indices.shape: "+a.shape+", shape: "+o)+(", sliceDim: "+c+", and batchDim: "+f+".");if(i.rank<f)throw new Error(d+(" update.rank < "+f+". "));if(o.length<c+(i.rank-f))throw new Error(d+(" Output shape length < "+(c+(i.rank-f))));if(i.rank!==f+o.length-c)throw new Error(d+(" update.rank != "+(f+o.length-c)));for(var g=0;g<f;++g)if(i.shape[g]!==a.shape[g])throw new Error(d+(" updates.shape["+g+"] ("+i.shape[g]+") != indices.shape["+g+"] ("+a.shape[g]+")."));for(var g=0;g<i.rank-f;++g)if(i.shape[g+f]!==o[g+c])throw new Error(d+(" updates.shape["+(g+f)+"] ("+i.shape[g+f]+") != shape["+(g+f)+"] ("+o[g+f]+")"))}function uk(o,a,i){if(a.rank<1)throw new Error("tf.scatterND() expects the indices to be rank 1 or higher,"+(" but the rank was "+a.rank+"."));if(o.rank<1)throw new Error("tf.scatterND() expects the updates to be rank 1 or higher,"+(" but the rank was "+o.rank+"."));if(a.dtype!=="int32")throw new Error("The dtype of 'indices' should be int32, but got dtype: "+a.dtype);if(i.length<1)throw new Error("Output rank must be greater or equal to 1, but got shape: "+i);if(i.length===0){if(a.size===0)throw new Error("Indices 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g=W(o,"image","cropAndResize"),v=W(a,"boxes","cropAndResize","float32"),w=W(i,"boxInd","cropAndResize","int32");f=f||"bilinear",d=d||0;var T=v.shape[0];U(g.rank===4,function(){return"Error in cropAndResize: image must be rank 4,"+("but got rank "+g.rank+".")}),U(v.rank===2&&v.shape[1]===4,function(){return"Error in cropAndResize: boxes must be have size ["+T+",4] "+("but had shape "+v.shape+".")}),U(w.rank===1&&w.shape[0]===T,function(){return"Error in cropAndResize: boxInd must be have size ["+T+"] "+("but had shape "+v.shape+".")}),U(c.length===2,function(){return"Error in cropAndResize: cropSize must be of length 2, but got "+("length "+c.length+".")}),U(c[0]>=1&&c[1]>=1,function(){return"cropSize must be atleast [1,1], but was "+c}),U(f==="bilinear"||f==="nearest",function(){return"method must be bilinear or nearest, but was "+f});var N=function(M){return M.cropAndResize(g,v,w,c,f,d)},E={image:g,boxes:v,boxInd:w},k={method:f,extrapolationValue:d,cropSize:c},$=Z.runKernelFunc(N,E,null,E$,k);return $}var $at=Y({cropAndResize_:Dat});function Aat(o){var a=W(o,"image","flipLeftRight","float32");U(a.rank===4,function(){return"Error in flipLeftRight: image must be rank 4,"+("but got rank "+a.rank+".")});var i={image:a},c=Z.runKernel(B$,i,{});return c}var _at=Y({flipLeftRight_:Aat});function Fat(o,a,i,c){i===void 0&&(i=0),c===void 0&&(c=.5);var f=W(o,"image","rotateWithOffset","float32");U(f.rank===4,function(){return"Error in rotateWithOffset: image must be rank 4,"+("but got rank "+f.rank+".")});var d={image:f},g={radians:a,fillValue:i,center:c},v=Z.runKernel(gA,d,g);return v}var Rat=Y({rotateWithOffset_:Fat});function qc(o,a,i,c,f,d){c==null&&(c=.5),f==null&&(f=Number.NEGATIVE_INFINITY),d==null&&(d=0);var g=o.shape[0];return i=Math.min(i,g),U(0<=c&&c<=1,function(){return"iouThreshold must be in [0, 1], but was 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c=Ka.cast(a.toBatchTensor(112,!0),"float32"),f=[122.782,117.001,104.298],d=Fs(c,f).div(Ka.scalar(255)),g=Qf(d,i.dense0,!0);return g=Qf(g,i.dense1),g=Qf(g,i.dense2),g=Qf(g,i.dense3),g=Ka.avgPool(g,[7,7],[2,2],"valid"),g})}async forward(a){return this.forwardInput(await He(a))}getDefaultModelName(){return"face_feature_extractor_model"}extractParamsFromWeigthMap(a){return JF(a)}extractParams(a){return YF(a)}},tR=se(he()),Qc=se(he());function np(o,a){return Qc.tidy(()=>Qc.add(Qc.matMul(o,a.weights),a.bias))}function ZF(o,a,i){let c=[],{extractWeights:f,getRemainingWeights:d}=ir(o),g=ev(f,c),v=g(a,i,"fc");if(d().length!==0)throw new Error(`weights remaing after extract: ${d().length}`);return{paramMappings:c,params:{fc:v}}}function QF(o){let a=[],i=Fr(o,a);function c(d){let g=i(`${d}/weights`,2),v=i(`${d}/bias`,1);return{weights:g,bias:v}}let f={fc:c("fc")};return ar(o,a),{params:f,paramMappings:a}}function av(o){let a={},i={};return Object.keys(o).forEach(c=>{let 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i=this.getClassifierChannelsIn(),c=this.getClassifierChannelsOut(),f=c*i+c,d=a.slice(0,a.length-f),g=a.slice(a.length-f);return this.faceFeatureExtractor.extractWeights(d),this.extractClassifierParams(g)}},t2=["neutral","happy","sad","angry","fearful","disgusted","surprised"],Xa=class{constructor(a){if(a.length!==7)throw new Error(`FaceExpressions.constructor - expected probabilities.length to be 7, have: ${a.length}`);t2.forEach((i,c)=>{this[i]=a[c]})}asSortedArray(){return t2.map(a=>({expression:a,probability:this[a]})).sort((a,i)=>i.probability-a.probability)}},iv=class extends rp{constructor(a=new ep){super("FaceExpressionNet",a)}forwardInput(a){return tl.tidy(()=>tl.softmax(this.runNet(a)))}async forward(a){return this.forwardInput(await He(a))}async predictExpressions(a){let i=await He(a),c=await this.forwardInput(i),f=await Promise.all(tl.unstack(c).map(async g=>{let v=await g.data();return g.dispose(),v}));c.dispose();let d=f.map(g=>new Xa(g));return i.isBatchInput?d:d[0]}getDefaultModelName(){return"face_expression_model"}getClassifierChannelsIn(){return 256}getClassifierChannelsOut(){return 7}};function e2(o){return o.expressions instanceof Xa}function uv(o,a){let i={expressions:a};return Object.assign({},o,i)}function hlt(o,a,i=.1,c){let f=Array.isArray(a)?a:[a];f.forEach(d=>{let g=d instanceof Xa?d:e2(d)?d.expressions:void 0;if(!g)throw new Error("drawFaceExpressions - expected faceExpressions to be FaceExpressions | WithFaceExpressions<{}> or array thereof");let v=g.asSortedArray(),w=v.filter(E=>E.probability>i),T=oo(d)?d.detection.box.bottomLeft:c||new ue(0,0),N=new Pa(w.map(E=>`${E.expression} (${Pi(E.probability)})`),T);N.draw(o)})}function su(o){return oo(o)&&o.landmarks instanceof Xr&&o.unshiftedLandmarks instanceof Xr&&o.alignedRect instanceof qe}function el(o,a){let{box:i}=o.detection,c=a.shiftBy(i.x,i.y),f=c.align(),{imageDims:d}=o.detection,g=new 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T=N=>{i.beginPath(),i.arc(N.x,N.y,v,0,2*Math.PI),i.fill()};this.faceLandmarks.positions.forEach(T)}}};function flt(o,a){let i=Array.isArray(a)?a:[a];i.forEach(c=>{let f=c instanceof Xr?c:su(c)?c.landmarks:void 0;if(!f)throw new Error("drawFaceLandmarks - expected faceExpressions to be FaceLandmarks | WithFaceLandmarks<WithFaceDetection<{}>> or array thereof");new r2(f).draw(o)})}var fo=se(he()),yn=se(he());function plt(o,a){let i=Yc(o,a),c=Jc(o,a);function f(g,v,w){let T=c(g,v,`${w}/separable_conv0`),N=c(v,v,`${w}/separable_conv1`),E=i(g,v,1,`${w}/expansion_conv`);return{separable_conv0:T,separable_conv1:N,expansion_conv:E}}function d(g,v){let w=c(g,g,`${v}/separable_conv0`),T=c(g,g,`${v}/separable_conv1`),N=c(g,g,`${v}/separable_conv2`);return{separable_conv0:w,separable_conv1:T,separable_conv2:N}}return{extractConvParams:i,extractSeparableConvParams:c,extractReductionBlockParams:f,extractMainBlockParams:d}}function eR(o,a){let i=[],{extractWeights:c,getRemainingWeights:f}=ir(o),{extractConvParams:d,extractSeparableConvParams:g,extractReductionBlockParams:v,extractMainBlockParams:w}=plt(c,i),T=d(3,32,3,"entry_flow/conv_in"),N=v(32,64,"entry_flow/reduction_block_0"),E=v(64,128,"entry_flow/reduction_block_1"),k={conv_in:T,reduction_block_0:N,reduction_block_1:E},$={};ro(a,0,1).forEach(H=>{$[`main_block_${H}`]=w(128,`middle_flow/main_block_${H}`)});let M=v(128,256,"exit_flow/reduction_block"),G=g(256,512,"exit_flow/separable_conv"),O={reduction_block:M,separable_conv:G};if(f().length!==0)throw new Error(`weights remaing after extract: ${f().length}`);return{paramMappings:i,params:{entry_flow:k,middle_flow:$,exit_flow:O}}}function dlt(o,a){let i=Fr(o,a),c=sv(i),f=Zc(i);function d(v){let w=f(`${v}/separable_conv0`),T=f(`${v}/separable_conv1`),N=c(`${v}/expansion_conv`);return{separable_conv0:w,separable_conv1:T,expansion_conv:N}}function g(v){let w=f(`${v}/separable_conv0`),T=f(`${v}/separable_conv1`),N=f(`${v}/separable_conv2`);return{separable_conv0:w,separable_conv1:T,separable_conv2:N}}return{extractConvParams:c,extractSeparableConvParams:f,extractReductionBlockParams:d,extractMainBlockParams:g}}function nR(o,a){let i=[],{extractConvParams:c,extractSeparableConvParams:f,extractReductionBlockParams:d,extractMainBlockParams:g}=dlt(o,i),v=c("entry_flow/conv_in"),w=d("entry_flow/reduction_block_0"),T=d("entry_flow/reduction_block_1"),N={conv_in:v,reduction_block_0:w,reduction_block_1:T},E={};ro(a,0,1).forEach(G=>{E[`main_block_${G}`]=g(`middle_flow/main_block_${G}`)});let k=d("exit_flow/reduction_block"),$=f("exit_flow/separable_conv"),M={reduction_block:k,separable_conv:$};return ar(o,i),{params:{entry_flow:N,middle_flow:E,exit_flow:M},paramMappings:i}}function rR(o,a,i){return yn.add(yn.conv2d(o,a.filters,i,"same"),a.bias)}function o2(o,a,i=!0){let c=i?yn.relu(o):o;return c=kr(c,a.separable_conv0,[1,1]),c=kr(yn.relu(c),a.separable_conv1,[1,1]),c=yn.maxPool(c,[3,3],[2,2],"same"),c=yn.add(c,rR(o,a.expansion_conv,[2,2])),c}function mlt(o,a){let i=kr(yn.relu(o),a.separable_conv0,[1,1]);return i=kr(yn.relu(i),a.separable_conv1,[1,1]),i=kr(yn.relu(i),a.separable_conv2,[1,1]),i=yn.add(i,o),i}var a2=class extends jn{constructor(a){super("TinyXception");this._numMainBlocks=a}forwardInput(a){let{params:i}=this;if(!i)throw new Error("TinyXception - load model before inference");return yn.tidy(()=>{let c=yn.cast(a.toBatchTensor(112,!0),"float32"),f=[122.782,117.001,104.298],d=Fs(c,f).div(yn.scalar(256)),g=yn.relu(rR(d,i.entry_flow.conv_in,[2,2]));return g=o2(g,i.entry_flow.reduction_block_0,!1),g=o2(g,i.entry_flow.reduction_block_1),ro(this._numMainBlocks,0,1).forEach(v=>{g=mlt(g,i.middle_flow[`main_block_${v}`])}),g=o2(g,i.exit_flow.reduction_block),g=yn.relu(kr(g,i.exit_flow.separable_conv,[1,1])),g})}async forward(a){return this.forwardInput(await He(a))}getDefaultModelName(){return"tiny_xception_model"}extractParamsFromWeigthMap(a){return nR(a,this._numMainBlocks)}extractParams(a){return eR(a,this._numMainBlocks)}};function sR(o){let a=[],{extractWeights:i,getRemainingWeights:c}=ir(o),f=ev(i,a),d=f(512,1,"fc/age"),g=f(512,2,"fc/gender");if(c().length!==0)throw new Error(`weights remaing after extract: ${c().length}`);return{paramMappings:a,params:{fc:{age:d,gender:g}}}}function oR(o){let a=[],i=Fr(o,a);function c(d){let g=i(`${d}/weights`,2),v=i(`${d}/bias`,1);return{weights:g,bias:v}}let f={fc:{age:c("fc/age"),gender:c("fc/gender")}};return ar(o,a),{params:f,paramMappings:a}}var Zo;(function(o){o.FEMALE="female",o.MALE="male"})(Zo||(Zo={}));var cv=class extends jn{constructor(a=new a2(2)){super("AgeGenderNet");this._faceFeatureExtractor=a}get faceFeatureExtractor(){return this._faceFeatureExtractor}runNet(a){let{params:i}=this;if(!i)throw new Error(`${this._name} - load model before inference`);return fo.tidy(()=>{let c=a instanceof Yo?this.faceFeatureExtractor.forwardInput(a):a,f=fo.avgPool(c,[7,7],[2,2],"valid").as2D(c.shape[0],-1),d=np(f,i.fc.age).as1D(),g=np(f,i.fc.gender);return{age:d,gender:g}})}forwardInput(a){return fo.tidy(()=>{let{age:i,gender:c}=this.runNet(a);return{age:i,gender:fo.softmax(c)}})}async forward(a){return this.forwardInput(await He(a))}async predictAgeAndGender(a){let i=await He(a),c=await this.forwardInput(i),f=fo.unstack(c.age),d=fo.unstack(c.gender),g=f.map((w,T)=>({ageTensor:w,genderTensor:d[T]})),v=await Promise.all(g.map(async({ageTensor:w,genderTensor:T})=>{let N=(await w.data())[0],E=(await T.data())[0],k=E>.5,$=k?Zo.MALE:Zo.FEMALE,M=k?E:1-E;return w.dispose(),T.dispose(),{age:N,gender:$,genderProbability:M}}));return c.age.dispose(),c.gender.dispose(),i.isBatchInput?v:v[0]}getDefaultModelName(){return"age_gender_model"}dispose(a=!0){this.faceFeatureExtractor.dispose(a),super.dispose(a)}loadClassifierParams(a){let{params:i,paramMappings:c}=this.extractClassifierParams(a);this._params=i,this._paramMappings=c}extractClassifierParams(a){return sR(a)}extractParamsFromWeigthMap(a){let{featureExtractorMap:i,classifierMap:c}=av(a);return this.faceFeatureExtractor.loadFromWeightMap(i),oR(c)}extractParams(a){let i=512*1+1+(512*2+2),c=a.slice(0,a.length-i),f=a.slice(a.length-i);return this.faceFeatureExtractor.extractWeights(c),this.extractClassifierParams(f)}};var Rr=se(he()),sp=class extends rp{postProcess(a,i,c){let f=c.map(({width:g,height:v})=>{let w=i/Math.max(v,g);return{width:g*w,height:v*w}}),d=f.length;return Rr.tidy(()=>{let g=(E,k)=>Rr.stack([Rr.fill([68],E,"float32"),Rr.fill([68],k,"float32")],1).as2D(1,136).as1D(),v=(E,k)=>{let{width:$,height:M}=f[E];return 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N=`mobilenetv1/conv_${T}`,E=`MobilenetV1/Conv2d_${T}_depthwise`,k=`${N}/depthwise_conv`,$=`${N}/pointwise_conv`,M=i(`${E}/depthwise_weights`,4,`${k}/filters`),G=i(`${E}/BatchNorm/gamma`,1,`${k}/batch_norm_scale`),O=i(`${E}/BatchNorm/beta`,1,`${k}/batch_norm_offset`),H=i(`${E}/BatchNorm/moving_mean`,1,`${k}/batch_norm_mean`),K=i(`${E}/BatchNorm/moving_variance`,1,`${k}/batch_norm_variance`);return{depthwise_conv:{filters:M,batch_norm_scale:G,batch_norm_offset:O,batch_norm_mean:H,batch_norm_variance:K},pointwise_conv:c("MobilenetV1",T,$)}}function d(){return{conv_0:c("MobilenetV1",0,"mobilenetv1/conv_0"),conv_1:f(1),conv_2:f(2),conv_3:f(3),conv_4:f(4),conv_5:f(5),conv_6:f(6),conv_7:f(7),conv_8:f(8),conv_9:f(9),conv_10:f(10),conv_11:f(11),conv_12:f(12),conv_13:f(13)}}function g(T,N){let E=i(`${T}/weights`,4,`${N}/filters`),k=i(`${T}/biases`,1,`${N}/bias`);return{filters:E,bias:k}}function v(T){let 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i,c=ls(o,a.conv_0,[2,2]),f=[a.conv_1,a.conv_2,a.conv_3,a.conv_4,a.conv_5,a.conv_6,a.conv_7,a.conv_8,a.conv_9,a.conv_10,a.conv_11,a.conv_12,a.conv_13];if(f.forEach((d,g)=>{let v=g+1,w=Clt(v);c=Slt(c,d.depthwise_conv,w),c=ls(c,d.pointwise_conv,[1,1]),v===11&&(i=c)}),i===null)throw new Error("mobileNetV1 - output of conv layer 11 is null");return{out:c,conv11:i}})}function gR(o,a,i,c,f){let d=o.shape[0],g=Math.min(i,d),v=a.map((N,E)=>({score:N,boxIndex:E})).filter(N=>N.score>f).sort((N,E)=>E.score-N.score),w=N=>N<=c?1:0,T=[];return v.forEach(N=>{if(T.length>=g)return;let E=N.score;for(let k=T.length-1;k>=0;--k){let $=Nlt(o,N.boxIndex,T[k]);if($===0)continue;if(N.score*=w($),N.score<=f)break}E===N.score&&T.push(N.boxIndex)}),T}function Nlt(o,a,i){let c=o.arraySync(),f=Math.min(c[a][0],c[a][2]),d=Math.min(c[a][1],c[a][3]),g=Math.max(c[a][0],c[a][2]),v=Math.max(c[a][1],c[a][3]),w=Math.min(c[i][0],c[i][2]),T=Math.min(c[i][1],c[i][3]),N=Math.max(c[i][0],c[i][2]),E=Math.max(c[i][1],c[i][3]),k=(g-f)*(v-d),$=(N-w)*(E-T);if(k<=0||$<=0)return 0;let M=Math.max(f,w),G=Math.max(d,T),O=Math.min(g,N),H=Math.min(v,E),K=Math.max(O-M,0)*Math.max(H-G,0);return K/(k+$-K)}var Ut=se(he());function Ilt(o){let a=Ut.unstack(Ut.transpose(o,[1,0])),i=[Ut.sub(a[2],a[0]),Ut.sub(a[3],a[1])],c=[Ut.add(a[0],Ut.div(i[0],Ut.scalar(2))),Ut.add(a[1],Ut.div(i[1],Ut.scalar(2)))];return{sizes:i,centers:c}}function Elt(o,a){let{sizes:i,centers:c}=Ilt(o),f=Ut.unstack(Ut.transpose(a,[1,0])),d=Ut.div(Ut.mul(Ut.exp(Ut.div(f[2],Ut.scalar(5))),i[0]),Ut.scalar(2)),g=Ut.add(Ut.mul(Ut.div(f[0],Ut.scalar(10)),i[0]),c[0]),v=Ut.div(Ut.mul(Ut.exp(Ut.div(f[3],Ut.scalar(5))),i[1]),Ut.scalar(2)),w=Ut.add(Ut.mul(Ut.div(f[1],Ut.scalar(10)),i[1]),c[1]);return Ut.transpose(Ut.stack([Ut.sub(g,d),Ut.sub(w,v),Ut.add(g,d),Ut.add(w,v)]),[1,0])}function vR(o,a,i){return Ut.tidy(()=>{let c=o.shape[0],f=Elt(Ut.reshape(Ut.tile(i.extra_dim,[c,1,1]),[-1,4]),Ut.reshape(o,[-1,4]));f=Ut.reshape(f,[c,f.shape[0]/c,4]);let d=Ut.sigmoid(Ut.slice(a,[0,0,1],[-1,-1,-1])),g=Ut.slice(d,[0,0,0],[-1,-1,1]);g=Ut.reshape(g,[c,g.shape[1]]);let v=Ut.unstack(f),w=Ut.unstack(g);return{boxes:v,scores:w}})}var ip=se(he()),ap=se(he());function ou(o,a){return ap.tidy(()=>{let i=o.shape[0],c=ap.reshape(ru(o,a.box_encoding_predictor),[i,-1,1,4]),f=ap.reshape(ru(o,a.class_predictor),[i,-1,3]);return{boxPredictionEncoding:c,classPrediction:f}})}function yR(o,a,i){return ip.tidy(()=>{let c=ls(o,i.conv_0,[1,1]),f=ls(c,i.conv_1,[2,2]),d=ls(f,i.conv_2,[1,1]),g=ls(d,i.conv_3,[2,2]),v=ls(g,i.conv_4,[1,1]),w=ls(v,i.conv_5,[2,2]),T=ls(w,i.conv_6,[1,1]),N=ls(T,i.conv_7,[2,2]),E=ou(a,i.box_predictor_0),k=ou(o,i.box_predictor_1),$=ou(f,i.box_predictor_2),M=ou(g,i.box_predictor_3),G=ou(w,i.box_predictor_4),O=ou(N,i.box_predictor_5),H=ip.concat([E.boxPredictionEncoding,k.boxPredictionEncoding,$.boxPredictionEncoding,M.boxPredictionEncoding,G.boxPredictionEncoding,O.boxPredictionEncoding],1),K=ip.concat([E.classPrediction,k.classPrediction,$.classPrediction,M.classPrediction,G.classPrediction,O.classPrediction],1);return{boxPredictions:H,classPredictions:K}})}var hs=class{constructor({minConfidence:a,maxResults:i}={}){this._name="SsdMobilenetv1Options";if(this._minConfidence=a||.5,this._maxResults=i||100,typeof this._minConfidence!="number"||this._minConfidence<=0||this._minConfidence>=1)throw new Error(`${this._name} - expected minConfidence to be a number between 0 and 1`);if(typeof this._maxResults!="number")throw new Error(`${this._name} - expected maxResults to be a number`)}get minConfidence(){return this._minConfidence}get maxResults(){return this._maxResults}},au=class extends jn{constructor(){super("SsdMobilenetv1")}forwardInput(a){let{params:i}=this;if(!i)throw new Error("SsdMobilenetv1 - load model before inference");return Vs.tidy(()=>{let c=Vs.cast(a.toBatchTensor(512,!1),"float32"),f=Vs.sub(Vs.mul(c,Vs.scalar(.007843137718737125)),Vs.scalar(1)),d=mR(f,i.mobilenetv1),{boxPredictions:g,classPredictions:v}=yR(d.out,d.conv11,i.prediction_layer);return vR(g,v,i.output_layer)})}async forward(a){return this.forwardInput(await He(a))}async locateFaces(a,i={}){let{maxResults:c,minConfidence:f}=new hs(i),d=await He(a),{boxes:g,scores:v}=this.forwardInput(d),w=g[0],T=v[0];for(let nt=1;nt<g.length;nt++)g[nt].dispose(),v[nt].dispose();let N=Array.from(await 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ue(9.041765,10.66308)],SR=[117.001,114.697,97.404],CR="tiny_yolov2_model",NR="tiny_yolov2_separable_conv_model",Ke=se(he()),gv=o=>typeof o=="number";function l2(o){if(!o)throw new Error(`invalid config: ${o}`);if(typeof o.withSeparableConvs!="boolean")throw new Error(`config.withSeparableConvs has to be a boolean, have: ${o.withSeparableConvs}`);if(!gv(o.iouThreshold)||o.iouThreshold<0||o.iouThreshold>1)throw new Error(`config.iouThreshold has to be a number between [0, 1], have: ${o.iouThreshold}`);if(!Array.isArray(o.classes)||!o.classes.length||!o.classes.every(a=>typeof a=="string"))throw new Error(`config.classes has to be an array class names: string[], have: ${JSON.stringify(o.classes)}`);if(!Array.isArray(o.anchors)||!o.anchors.length||!o.anchors.map(a=>a||{}).every(a=>gv(a.x)&&gv(a.y)))throw new Error(`config.anchors has to be an array of { x: number, y: number }, have: ${JSON.stringify(o.anchors)}`);if(o.meanRgb&&(!Array.isArray(o.meanRgb)||o.meanRgb.length!==3||!o.meanRgb.every(gv)))throw new Error(`config.meanRgb has to be an array of shape [number, number, number], have: ${JSON.stringify(o.meanRgb)}`)}var ps=se(he()),fs=se(he());function ol(o){return fs.tidy(()=>{let a=fs.mul(o,fs.scalar(.10000000149011612));return fs.add(fs.relu(fs.sub(o,a)),a)})}function ta(o,a){return ps.tidy(()=>{let i=ps.pad(o,[[0,0],[1,1],[1,1],[0,0]]);return i=ps.conv2d(i,a.conv.filters,[1,1],"valid"),i=ps.sub(i,a.bn.sub),i=ps.mul(i,a.bn.truediv),i=ps.add(i,a.conv.bias),ol(i)})}var Za=se(he());function ea(o,a){return Za.tidy(()=>{let i=Za.pad(o,[[0,0],[1,1],[1,1],[0,0]]);return i=Za.separableConv2d(i,a.depthwise_filter,a.pointwise_filter,[1,1],"valid"),i=Za.add(i,a.bias),ol(i)})}var h2=se(he());function $lt(o,a){let i=Yc(o,a);function c(g,v){let w=h2.tensor1d(o(g)),T=h2.tensor1d(o(g));return a.push({paramPath:`${v}/sub`},{paramPath:`${v}/truediv`}),{sub:w,truediv:T}}function f(g,v,w){let T=i(g,v,3,`${w}/conv`),N=c(v,`${w}/bn`);return{conv:T,bn:N}}let d=Jc(o,a);return{extractConvParams:i,extractConvWithBatchNormParams:f,extractSeparableConvParams:d}}function IR(o,a,i,c){let{extractWeights:f,getRemainingWeights:d}=ir(o),g=[],{extractConvParams:v,extractConvWithBatchNormParams:w,extractSeparableConvParams:T}=$lt(f,g),N;if(a.withSeparableConvs){let[E,k,$,M,G,O,H,K,nt]=c,ct=a.isFirstLayerConv2d?v(E,k,3,"conv0"):T(E,k,"conv0"),dt=T(k,$,"conv1"),Ct=T($,M,"conv2"),St=T(M,G,"conv3"),It=T(G,O,"conv4"),Gt=T(O,H,"conv5"),Et=K?T(H,K,"conv6"):void 0,Wt=nt?T(K,nt,"conv7"):void 0,_t=v(nt||K||H,5*i,1,"conv8");N={conv0:ct,conv1:dt,conv2:Ct,conv3:St,conv4:It,conv5:Gt,conv6:Et,conv7:Wt,conv8:_t}}else{let[E,k,$,M,G,O,H,K,nt]=c,ct=w(E,k,"conv0"),dt=w(k,$,"conv1"),Ct=w($,M,"conv2"),St=w(M,G,"conv3"),It=w(G,O,"conv4"),Gt=w(O,H,"conv5"),Et=w(H,K,"conv6"),Wt=w(K,nt,"conv7"),_t=v(nt,5*i,1,"conv8");N={conv0:ct,conv1:dt,conv2:Ct,conv3:St,conv4:It,conv5:Gt,conv6:Et,conv7:Wt,conv8:_t}}if(d().length!==0)throw new Error(`weights remaing after extract: ${d().length}`);return{params:N,paramMappings:g}}function Alt(o,a){let i=Fr(o,a);function c(v){let w=i(`${v}/sub`,1),T=i(`${v}/truediv`,1);return{sub:w,truediv:T}}function f(v){let w=i(`${v}/filters`,4),T=i(`${v}/bias`,1);return{filters:w,bias:T}}function d(v){let w=f(`${v}/conv`),T=c(`${v}/bn`);return{conv:w,bn:T}}let g=Zc(i);return{extractConvParams:f,extractConvWithBatchNormParams:d,extractSeparableConvParams:g}}function ER(o,a){let i=[],{extractConvParams:c,extractConvWithBatchNormParams:f,extractSeparableConvParams:d}=Alt(o,i),g;if(a.withSeparableConvs){let v=a.filterSizes&&a.filterSizes.length||9;g={conv0:a.isFirstLayerConv2d?c("conv0"):d("conv0"),conv1:d("conv1"),conv2:d("conv2"),conv3:d("conv3"),conv4:d("conv4"),conv5:d("conv5"),conv6:v>7?d("conv6"):void 0,conv7:v>8?d("conv7"):void 0,conv8:c("conv8")}}else g={conv0:f("conv0"),conv1:f("conv1"),conv2:f("conv2"),conv3:f("conv3"),conv4:f("conv4"),conv5:f("conv5"),conv6:f("conv6"),conv7:f("conv7"),conv8:c("conv8")};return ar(o,i),{params:g,paramMappings:i}}var f2;(function(o){o[o.XS=224]="XS",o[o.SM=320]="SM",o[o.MD=416]="MD",o[o.LG=608]="LG"})(f2||(f2={}));var po=class{constructor({inputSize:a,scoreThreshold:i}={}){this._name="TinyYolov2Options";if(this._inputSize=a||416,this._scoreThreshold=i||.5,typeof this._inputSize!="number"||this._inputSize%32!==0)throw new Error(`${this._name} - expected inputSize to be a number divisible by 32`);if(typeof this._scoreThreshold!="number"||this._scoreThreshold<=0||this._scoreThreshold>=1)throw new Error(`${this._name} - expected scoreThreshold to be a number between 0 and 1`)}get inputSize(){return this._inputSize}get scoreThreshold(){return this._scoreThreshold}},p2=class extends jn{constructor(a){super("TinyYolov2");l2(a),this._config=a}get config(){return this._config}get withClassScores(){return this.config.withClassScores||this.config.classes.length>1}get boxEncodingSize(){return 5+(this.withClassScores?this.config.classes.length:0)}runTinyYolov2(a,i){let c=ta(a,i.conv0);return c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ta(c,i.conv1),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ta(c,i.conv2),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ta(c,i.conv3),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ta(c,i.conv4),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ta(c,i.conv5),c=Ke.maxPool(c,[2,2],[1,1],"same"),c=ta(c,i.conv6),c=ta(c,i.conv7),ru(c,i.conv8,"valid",!1)}runMobilenet(a,i){let c=this.config.isFirstLayerConv2d?ol(ru(a,i.conv0,"valid",!1)):ea(a,i.conv0);return c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ea(c,i.conv1),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ea(c,i.conv2),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ea(c,i.conv3),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ea(c,i.conv4),c=Ke.maxPool(c,[2,2],[2,2],"same"),c=ea(c,i.conv5),c=Ke.maxPool(c,[2,2],[1,1],"same"),c=i.conv6?ea(c,i.conv6):c,c=i.conv7?ea(c,i.conv7):c,ru(c,i.conv8,"valid",!1)}forwardInput(a,i){let{params:c}=this;if(!c)throw new Error("TinyYolov2 - load model before inference");return Ke.tidy(()=>{let f=Ke.cast(a.toBatchTensor(i,!1),"float32");return f=this.config.meanRgb?Fs(f,this.config.meanRgb):f,f=f.div(Ke.scalar(256)),this.config.withSeparableConvs?this.runMobilenet(f,c):this.runTinyYolov2(f,c)})}async forward(a,i){return await this.forwardInput(await He(a),i)}async detect(a,i={}){let{inputSize:c,scoreThreshold:f}=new po(i),d=await He(a),g=await this.forwardInput(d,c),v=Ke.tidy(()=>Ke.unstack(g)[0].expandDims()),w={width:d.getInputWidth(0),height:d.getInputHeight(0)},T=await this.extractBoxes(v,d.getReshapedInputDimensions(0),f);g.dispose(),v.dispose();let N=T.map(O=>O.box),E=T.map(O=>O.score),k=T.map(O=>O.classScore),$=T.map(O=>this.config.classes[O.label]),M=Fx(N.map(O=>O.rescale(c)),E,this.config.iouThreshold,!0),G=M.map(O=>new Fa(E[O],k[O],$[O],N[O],w));return G}getDefaultModelName(){return""}extractParamsFromWeigthMap(a){return ER(a,this.config)}extractParams(a){let i=this.config.filterSizes||p2.DEFAULT_FILTER_SIZES,c=i?i.length:void 0;if(c!==7&&c!==8&&c!==9)throw new Error(`TinyYolov2 - expected 7 | 8 | 9 convolutional filters, but found ${c} filterSizes in config`);return IR(a,this.config,this.boxEncodingSize,i)}async extractBoxes(a,i,c){let{width:f,height:d}=i,g=Math.max(f,d),v=g/f,w=g/d,T=a.shape[1],N=this.config.anchors.length,[E,k,$]=Ke.tidy(()=>{let H=a.reshape([T,T,N,this.boxEncodingSize]),K=H.slice([0,0,0,0],[T,T,N,4]),nt=H.slice([0,0,0,4],[T,T,N,1]),ct=this.withClassScores?Ke.softmax(H.slice([0,0,0,5],[T,T,N,this.config.classes.length]),3):Ke.scalar(0);return[K,nt,ct]}),M=[],G=await k.array(),O=await E.array();for(let H=0;H<T;H++)for(let K=0;K<T;K++)for(let nt=0;nt<N;nt++){let ct=If(G[H][K][nt][0]);if(!c||ct>c){let dt=(K+If(O[H][K][nt][0]))/T*v,Ct=(H+If(O[H][K][nt][1]))/T*w,St=Math.exp(O[H][K][nt][2])*this.config.anchors[nt].x/T*v,It=Math.exp(O[H][K][nt][3])*this.config.anchors[nt].y/T*w,Gt=dt-St/2,Et=Ct-It/2,Wt={row:H,col:K,anchor:nt},{classScore:_t,label:Kt}=this.withClassScores?await this.extractPredictedClass($,Wt):{classScore:1,label:0};M.push({box:new Tc(Gt,Et,Gt+St,Et+It),score:ct,classScore:ct*_t,label:Kt,...Wt})}}return E.dispose(),k.dispose(),$.dispose(),M}async extractPredictedClass(a,i){let{row:c,col:f,anchor:d}=i,g=await a.array();return Array(this.config.classes.length).fill(0).map((v,w)=>g[c][f][d][w]).map((v,w)=>({classScore:v,label:w})).reduce((v,w)=>v.classScore>w.classScore?v:w)}},al=p2;al.DEFAULT_FILTER_SIZES=[3,16,32,64,128,256,512,1024,1024];var il=class extends al{constructor(a=!0){let i=Object.assign({},{withSeparableConvs:a,iouThreshold:xR,classes:["face"]},a?{anchors:kR,meanRgb:SR}:{anchors:TR,withClassScores:!0});super(i)}get withSeparableConvs(){return this.config.withSeparableConvs}get anchors(){return this.config.anchors}async locateFaces(a,i){let c=await this.detect(a,i);return c.map(f=>new qe(f.score,f.relativeBox,{width:f.imageWidth,height:f.imageHeight}))}getDefaultModelName(){return this.withSeparableConvs?NR:CR}extractParamsFromWeigthMap(a){return super.extractParamsFromWeigthMap(a)}};function _lt(o,a=!0){let i=new il(a);return i.extractWeights(o),i}var vv=class extends po{constructor(){super(...arguments);this._name="TinyFaceDetectorOptions"}},ds=class{async then(a){return a(await this.run())}async run(){throw new Error("ComposableTask - run is not implemented")}},up=se(he()),d2=se(he());async function iu(o,a,i,c,f=({alignedRect:d})=>d){let d=o.map(w=>su(w)?f(w):w.detection),g=c||(a instanceof d2.Tensor?await Kc(a,d):await jc(a,d)),v=await i(g);return g.forEach(w=>w instanceof d2.Tensor&&w.dispose()),v}async function ul(o,a,i,c,f){return iu([o],a,async d=>i(d[0]),c,f)}var DR=.4,$R=[new ue(1.603231,2.094468),new ue(6.041143,7.080126),new ue(2.882459,3.518061),new ue(4.266906,5.178857),new ue(9.041765,10.66308)],AR=[117.001,114.697,97.404],cl=class extends al{constructor(){let a={withSeparableConvs:!0,iouThreshold:DR,classes:["face"],anchors:$R,meanRgb:AR,isFirstLayerConv2d:!0,filterSizes:[3,16,32,64,128,256,512]};super(a)}get anchors(){return this.config.anchors}async locateFaces(a,i){let c=await this.detect(a,i);return c.map(f=>new qe(f.score,f.relativeBox,{width:f.imageWidth,height:f.imageHeight}))}getDefaultModelName(){return"tiny_face_detector_model"}extractParamsFromWeigthMap(a){return super.extractParamsFromWeigthMap(a)}},$e={ssdMobilenetv1:new au,tinyFaceDetector:new cl,tinyYolov2:new il,faceLandmark68Net:new nl,faceLandmark68TinyNet:new lv,faceRecognitionNet:new sl,faceExpressionNet:new iv,ageGenderNet:new cv},_R=(o,a)=>$e.ssdMobilenetv1.locateFaces(o,a),Flt=(o,a)=>$e.tinyFaceDetector.locateFaces(o,a),Rlt=(o,a)=>$e.tinyYolov2.locateFaces(o,a),FR=o=>$e.faceLandmark68Net.detectLandmarks(o),Plt=o=>$e.faceLandmark68TinyNet.detectLandmarks(o),Olt=o=>$e.faceRecognitionNet.computeFaceDescriptor(o),Mlt=o=>$e.faceExpressionNet.predictExpressions(o),Llt=o=>$e.ageGenderNet.predictAgeAndGender(o),RR=o=>$e.ssdMobilenetv1.load(o),Blt=o=>$e.tinyFaceDetector.load(o),zlt=o=>$e.tinyYolov2.load(o),Wlt=o=>$e.faceLandmark68Net.load(o),Vlt=o=>$e.faceLandmark68TinyNet.load(o),Ult=o=>$e.faceRecognitionNet.load(o),Glt=o=>$e.faceExpressionNet.load(o),Hlt=o=>$e.ageGenderNet.load(o),qlt=RR,jlt=_R,Klt=FR,m2=class extends ds{constructor(a,i,c){super();this.parentTask=a;this.input=i;this.extractedFaces=c}},fl=class extends m2{async run(){let a=await this.parentTask,i=await iu(a,this.input,async c=>await Promise.all(c.map(f=>$e.faceExpressionNet.predictExpressions(f))),this.extractedFaces);return a.map((c,f)=>uv(c,i[f]))}withAgeAndGender(){return new ll(this,this.input)}},pl=class extends m2{async run(){let a=await this.parentTask;if(!a)return;let i=await ul(a,this.input,c=>$e.faceExpressionNet.predictExpressions(c),this.extractedFaces);return uv(a,i)}withAgeAndGender(){return new hl(this,this.input)}},lu=class extends fl{withAgeAndGender(){return new uu(this,this.input)}withFaceDescriptors(){return new Qa(this,this.input)}},hu=class extends pl{withAgeAndGender(){return new cu(this,this.input)}withFaceDescriptor(){return new ti(this,this.input)}},g2=class extends ds{constructor(a,i,c){super();this.parentTask=a;this.input=i;this.extractedFaces=c}},ll=class extends g2{async run(){let a=await this.parentTask,i=await iu(a,this.input,async c=>await Promise.all(c.map(f=>$e.ageGenderNet.predictAgeAndGender(f))),this.extractedFaces);return a.map((c,f)=>{let{age:d,gender:g,genderProbability:v}=i[f];return dv(mv(c,g,v),d)})}withFaceExpressions(){return new fl(this,this.input)}},hl=class extends g2{async run(){let a=await this.parentTask;if(!a)return;let{age:i,gender:c,genderProbability:f}=await ul(a,this.input,d=>$e.ageGenderNet.predictAgeAndGender(d),this.extractedFaces);return dv(mv(a,c,f),i)}withFaceExpressions(){return new pl(this,this.input)}},uu=class extends ll{withFaceExpressions(){return new lu(this,this.input)}withFaceDescriptors(){return new Qa(this,this.input)}},cu=class extends hl{withFaceExpressions(){return new hu(this,this.input)}withFaceDescriptor(){return new ti(this,this.input)}},yv=class extends ds{constructor(a,i){super();this.parentTask=a;this.input=i}},Qa=class extends yv{async run(){let a=await this.parentTask,i=await iu(a,this.input,c=>Promise.all(c.map(f=>$e.faceRecognitionNet.computeFaceDescriptor(f))),null,c=>c.landmarks.align(null,{useDlibAlignment:!0}));return i.map((c,f)=>pv(a[f],c))}withFaceExpressions(){return new lu(this,this.input)}withAgeAndGender(){return new uu(this,this.input)}},ti=class extends yv{async run(){let a=await this.parentTask;if(!a)return;let i=await ul(a,this.input,c=>$e.faceRecognitionNet.computeFaceDescriptor(c),null,c=>c.landmarks.align(null,{useDlibAlignment:!0}));return pv(a,i)}withFaceExpressions(){return new hu(this,this.input)}withAgeAndGender(){return new cu(this,this.input)}},bv=class extends ds{constructor(a,i,c){super();this.parentTask=a;this.input=i;this.useTinyLandmarkNet=c}get landmarkNet(){return this.useTinyLandmarkNet?$e.faceLandmark68TinyNet:$e.faceLandmark68Net}},wv=class extends bv{async run(){let a=await this.parentTask,i=a.map(d=>d.detection),c=this.input instanceof up.Tensor?await Kc(this.input,i):await jc(this.input,i),f=await Promise.all(c.map(d=>this.landmarkNet.detectLandmarks(d)));return c.forEach(d=>d instanceof up.Tensor&&d.dispose()),a.map((d,g)=>el(d,f[g]))}withFaceExpressions(){return new lu(this,this.input)}withAgeAndGender(){return new uu(this,this.input)}withFaceDescriptors(){return new Qa(this,this.input)}},xv=class extends bv{async run(){let a=await this.parentTask;if(!a)return;let{detection:i}=a,c=this.input instanceof up.Tensor?await Kc(this.input,[i]):await jc(this.input,[i]),f=await this.landmarkNet.detectLandmarks(c[0]);return c.forEach(d=>d instanceof up.Tensor&&d.dispose()),el(a,f)}withFaceExpressions(){return new hu(this,this.input)}withAgeAndGender(){return new cu(this,this.input)}withFaceDescriptor(){return new ti(this,this.input)}},Tv=class extends ds{constructor(a,i=new hs){super();this.input=a;this.options=i}},cp=class extends Tv{async run(){let{input:a,options:i}=this,c=i instanceof vv?f=>$e.tinyFaceDetector.locateFaces(f,i):i instanceof hs?f=>$e.ssdMobilenetv1.locateFaces(f,i):i instanceof po?f=>$e.tinyYolov2.locateFaces(f,i):null;if(!c)throw new Error("detectFaces - expected options to be instance of TinyFaceDetectorOptions | SsdMobilenetv1Options | MtcnnOptions | TinyYolov2Options");return c(a)}runAndExtendWithFaceDetections(){return new Promise(async a=>{let i=await this.run();return a(i.map(c=>Mi({},c)))})}withFaceLandmarks(a=!1){return new wv(this.runAndExtendWithFaceDetections(),this.input,a)}withFaceExpressions(){return new fl(this.runAndExtendWithFaceDetections(),this.input)}withAgeAndGender(){return new ll(this.runAndExtendWithFaceDetections(),this.input)}},kv=class extends Tv{async run(){let a=await new cp(this.input,this.options),i=a[0];return a.forEach(c=>{c.score>i.score&&(i=c)}),i}runAndExtendWithFaceDetection(){return new Promise(async a=>{let i=await this.run();return a(i?Mi({},i):void 0)})}withFaceLandmarks(a=!1){return new xv(this.runAndExtendWithFaceDetection(),this.input,a)}withFaceExpressions(){return new pl(this.runAndExtendWithFaceDetection(),this.input)}withAgeAndGender(){return new hl(this.runAndExtendWithFaceDetection(),this.input)}};function Xlt(o,a=new hs){return new kv(o,a)}function Sv(o,a=new hs){return new cp(o,a)}async function PR(o,a){return console.warn("allFacesSsdMobilenetv1 is deprecated and will be removed soon, use the high level api instead"),await Sv(o,new hs(a?{minConfidence:a}:{})).withFaceLandmarks().withFaceDescriptors()}async function Ylt(o,a={}){return console.warn("allFacesTinyYolov2 is deprecated and will be removed soon, use the high level api instead"),await Sv(o,new po(a)).withFaceLandmarks().withFaceDescriptors()}var Jlt=PR;function v2(o,a){if(o.length!==a.length)throw new Error("euclideanDistance: arr1.length !== arr2.length");let i=Array.from(o),c=Array.from(a);return Math.sqrt(i.map((f,d)=>f-c[d]).reduce((f,d)=>f+Math.pow(d,2),0))}var Cv=class{constructor(a,i=.6){this._distanceThreshold=i;let c=Array.isArray(a)?a:[a];if(!c.length)throw new Error("FaceRecognizer.constructor - expected atleast one input");let f=1,d=()=>`person ${f++}`;this._labeledDescriptors=c.map(g=>{if(g instanceof Vo)return g;if(g instanceof Float32Array)return new Vo(d(),[g]);if(g.descriptor&&g.descriptor instanceof Float32Array)return new Vo(d(),[g.descriptor]);throw new Error("FaceRecognizer.constructor - expected inputs to be of type LabeledFaceDescriptors | WithFaceDescriptor<any> | Float32Array | Array<LabeledFaceDescriptors | WithFaceDescriptor<any> | Float32Array>")})}get labeledDescriptors(){return this._labeledDescriptors}get distanceThreshold(){return this._distanceThreshold}computeMeanDistance(a,i){return i.map(c=>v2(c,a)).reduce((c,f)=>c+f,0)/(i.length||1)}matchDescriptor(a){return this.labeledDescriptors.map(({descriptors:i,label:c})=>new Ef(c,this.computeMeanDistance(a,i))).reduce((i,c)=>i.distance<c.distance?i:c)}findBestMatch(a){let i=this.matchDescriptor(a);return i.distance<this.distanceThreshold?i:new Ef("unknown",i.distance)}toJSON(){return{distanceThreshold:this.distanceThreshold,labeledDescriptors:this.labeledDescriptors.map(a=>a.toJSON())}}static fromJSON(a){let i=a.labeledDescriptors.map(c=>Vo.fromJSON(c));return new Cv(i,a.distanceThreshold)}};function Zlt(o){let a=new cl;return a.extractWeights(o),a}function OR(o,a){let{width:i,height:c}=new or(a.width,a.height);if(i<=0||c<=0)throw new Error(`resizeResults - invalid dimensions: ${JSON.stringify({width:i,height:c})}`);if(Array.isArray(o))return o.map(f=>OR(f,{width:i,height:c}));if(su(o)){let f=o.detection.forSize(i,c),d=o.unshiftedLandmarks.forSize(f.box.width,f.box.height);return el(Mi(o,f),d)}return oo(o)?Mi(o,o.detection.forSize(i,c)):o instanceof Xr||o instanceof qe?o.forSize(i,c):o}var MR="0.8.8",tht=typeof process!="undefined",eht=typeof navigator!="undefined"&&typeof navigator.userAgent!="undefined",nht={faceapi:MR,node:tht,browser:eht};
/*! *****************************************************************************
Copyright (c) Microsoft Corporation. All rights reserved.
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/**
 * @license
 * Copyright 2017 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
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 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
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/**
 * @license
 * Copyright 2018 Google LLC
 *
 * Use of this source code is governed by an MIT-style
 * license that can be found in the LICENSE file or at
 * https://opensource.org/licenses/MIT.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2018 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * =============================================================================
 */
/**
 * @license
 * Copyright 2018 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2019 Google LLC
 *
 * Use of this source code is governed by an MIT-style
 * license that can be found in the LICENSE file or at
 * https://opensource.org/licenses/MIT.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * =============================================================================
 */
/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2020 Google Inc. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2020 Google LLC
 *
 * Use of this source code is governed by an MIT-style
 * license that can be found in the LICENSE file or at
 * https://opensource.org/licenses/MIT.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2020 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
/**
 * @license
 * Copyright 2020 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the License);
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an AS IS BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
/**
* @license
* Copyright 2018 Google LLC. All Rights Reserved.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* =============================================================================
*/
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