diff --git a/.build.json b/.build.json
index 5a9aa732..d45c6be5 100644
--- a/.build.json
+++ b/.build.json
@@ -91,8 +91,7 @@
         "platform": "browser",
         "format": "esm",
         "input": "tfjs/tf-version.ts",
-        "output": "dist/tfjs.version.js",
-        "external": ["fs", "os", "buffer", "util"]
+        "output": "dist/tfjs.version.js"
       },
       {
         "name": "tfjs/browser/esm/nobundle",
@@ -100,7 +99,7 @@
         "format": "esm",
         "input": "tfjs/tf-browser.ts",
         "output": "dist/tfjs.esm.js",
-        "external": ["@tensorflow", "fs", "os", "buffer", "util"]
+        "external": ["@tensorflow"]
       },
       {
         "name": "human/browser/esm/nobundle",
@@ -109,7 +108,7 @@
         "input": "src/human.ts",
         "output": "dist/human.esm-nobundle.js",
         "sourcemap": true,
-        "external": ["@tensorflow", "fs", "os", "buffer", "util"]
+        "external": ["@tensorflow"]
       },
       {
         "name": "tfjs/browser/esm/custom",
@@ -117,8 +116,7 @@
         "format": "esm",
         "input": "tfjs/tf-custom.ts",
         "output": "dist/tfjs.esm.js",
-        "sourcemap": false,
-        "external": ["fs", "os", "buffer", "util"]
+        "sourcemap": false
       },
       {
         "name": "human/browser/iife/bundle",
@@ -128,7 +126,7 @@
         "output": "dist/human.js",
         "minify": true,
         "globalName": "Human",
-        "external": ["fs", "os", "buffer", "util"]
+        "external": ["@tensorflow"]
       },
       {
         "name": "human/browser/esm/bundle",
@@ -138,7 +136,7 @@
         "output": "dist/human.esm.js",
         "sourcemap": true,
         "minify": false,
-        "external": ["fs", "os", "buffer", "util"],
+        "external": ["@tensorflow"],
         "typings": "types/lib",
         "typedoc": "typedoc"
       },
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 025b1728..be695ca6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,8 +9,12 @@
   
 ## Changelog
   
-### **HEAD -> main** 2021/11/17 mandic00@live.com
+### **2.5.3** 2021/11/18 mandic00@live.com
 
+
+### **origin/main** 2021/11/17 mandic00@live.com
+
+- create typedef rollup
 - optimize centernet
 - cache frequent tf constants
 - add extra face rotation prior to mesh
diff --git a/TODO.md b/TODO.md
index fd9a3204..21e51d55 100644
--- a/TODO.md
+++ b/TODO.md
@@ -43,21 +43,21 @@ MoveNet MultiPose model does not work with WASM backend due to missing F32 broad
 ## Pending Release Notes
 
 New:
-- New type definitions rollup
-- New demo `demos/faceid` that utilizes multiple algorithm  to validate input before triggering face recognition
-- New optional model `liveness`  
+- Demo `demos/faceid` that utilizes multiple algorithm  to validate input before triggering face recognition
+- Type definitions rollup for `Human` and `TFJS`
+- Optional module `liveness`  
   checks if input appears to be a real-world live image or a recording  
-  best used together with `antispoofing` that checks if input appears to have a realistic face
-- New face masking option in `face.config.detector.mask`  
+  best used together with module `antispoofing` that checks if input appears to have a realistic face
+- Face masking option in `face.config.detector.mask`  
   result is shading of face image outside of face area which is useful for increased sensitivity of other modules that rely on detected face as input 
-- New face crop option in `face.config.detector.cropFactor`
+- Face crop option in `face.config.detector.cropFactor`
   result is user-definable fine-tuning for other modules that rely on detected face as input 
 
 Other:
+- Documentation overhaul
 - Improved **Safari** compatibility
 - Improved `similarity` and `match` score range normalization
 - Improved error handling
 - Improved VSCode out-of-the-box experience
-- Documentation overhaul
 - Fix for optional `gear`, `ssrnet`, `mobilefacenet` modules
 - Fix for Firefox WebGPU compatibility issue
diff --git a/api-extractor.json b/api-extractor.json
index 75161b5e..037280f7 100644
--- a/api-extractor.json
+++ b/api-extractor.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://developer.microsoft.com/json-schemas/api-extractor/v7/api-extractor.schema.json",
   "mainEntryPointFilePath": "types/lib/src/human.d.ts",
-  "bundledPackages": ["@tensorflow/tfjs-core", "@tensorflow/tfjs-converter", "long", "@types/offscreencanvas"],
+  "bundledPackages": ["@tensorflow/tfjs-core", "@tensorflow/tfjs-converter"],
   "compiler": {
     "skipLibCheck": false
   },
diff --git a/demo/faceid/index.js b/demo/faceid/index.js
index 49f4cafe..9184b9bb 100644
--- a/demo/faceid/index.js
+++ b/demo/faceid/index.js
@@ -313,7 +313,7 @@ async function main() {
   }
 }
 async function init() {
-  log2("human version:", human.version, "| tfjs version:", human.tf.version_core);
+  log2("human version:", human.version, "| tfjs version:", human.tf.version["tfjs-core"]);
   log2("options:", JSON.stringify(options).replace(/{|}|"|\[|\]/g, "").replace(/,/g, " "));
   printFPS("loading...");
   log2("known face records:", await count());
diff --git a/demo/faceid/index.ts b/demo/faceid/index.ts
index f897eb23..0445d29a 100644
--- a/demo/faceid/index.ts
+++ b/demo/faceid/index.ts
@@ -257,7 +257,7 @@ async function main() { // main entry point
 }
 
 async function init() {
-  log('human version:', human.version, '| tfjs version:', human.tf.version_core);
+  log('human version:', human.version, '| tfjs version:', human.tf.version['tfjs-core']);
   log('options:', JSON.stringify(options).replace(/{|}|"|\[|\]/g, '').replace(/,/g, ' '));
   printFPS('loading...');
   log('known face records:', await indexDb.count());
diff --git a/demo/multithread/node-multiprocess-worker.js b/demo/multithread/node-multiprocess-worker.js
index 2ad5af08..c8f16a99 100644
--- a/demo/multithread/node-multiprocess-worker.js
+++ b/demo/multithread/node-multiprocess-worker.js
@@ -16,7 +16,7 @@ const Human = require('../../dist/human.node.js').default; // or const Human = r
 let human = null;
 
 const myConfig = {
-  backend: 'tensorflow',
+  // backend: 'tensorflow',
   modelBasePath: 'file://models/',
   debug: false,
   async: true,
@@ -78,7 +78,7 @@ async function main() {
   // wait until tf is ready
   await human.tf.ready();
   // pre-load models
-  log.state('Worker: PID:', process.pid, `TensorFlow/JS ${human.tf.version_core} Human ${human.version} Backend: ${human.tf.getBackend()}`);
+  log.state('Worker: PID:', process.pid, `TensorFlow/JS ${human.tf.version['tfjs-core']} Human ${human.version} Backend: ${human.tf.getBackend()}`);
   await human.load();
 
   // now we're ready, so send message back to main that it knows it can use this worker
diff --git a/demo/nodejs/node-simple.js b/demo/nodejs/node-simple.js
new file mode 100644
index 00000000..9c56a96b
--- /dev/null
+++ b/demo/nodejs/node-simple.js
@@ -0,0 +1,13 @@
+const fs = require('fs');
+const Human = require('../../dist/human.node.js').default; // this is same as `@vladmandic/human` but using relative paths
+
+async function main(inputFile) {
+  const human = new Human(); // create instance of human using default configuration
+  const buffer = fs.readFileSync(inputFile); // read file data into buffer
+  const tensor = human.tf.node.decodeImage(buffer); // decode jpg data
+  const result = await human.detect(tensor); // run detection; will initialize backend and on-demand load models
+  // eslint-disable-next-line no-console
+  console.log(result);
+}
+
+main('samples/in/ai-body.jpg');
diff --git a/demo/nodejs/node.js b/demo/nodejs/node.js
index a01c191e..f187ba04 100644
--- a/demo/nodejs/node.js
+++ b/demo/nodejs/node.js
@@ -19,7 +19,7 @@ const Human = require('../../dist/human.node.js').default; // or const Human = r
 let human = null;
 
 const myConfig = {
-  backend: 'tensorflow',
+  // backend: 'tensorflow',
   modelBasePath: 'file://models/',
   debug: true,
   async: false,
diff --git a/demo/typescript/index.js b/demo/typescript/index.js
index 7185752d..5f46142c 100644
--- a/demo/typescript/index.js
+++ b/demo/typescript/index.js
@@ -8,7 +8,12 @@
 import { Human } from "../../dist/human.esm.js";
 var humanConfig = {
   modelBasePath: "../../models",
-  filter: { equalization: true }
+  filter: { enabled: true, equalization: false },
+  face: { enabled: true, detector: { rotation: false }, mesh: { enabled: true }, iris: { enabled: true }, description: { enabled: true }, emotion: { enabled: true } },
+  body: { enabled: true },
+  hand: { enabled: true },
+  object: { enabled: false },
+  gesture: { enabled: true }
 };
 var human = new Human(humanConfig);
 human.env["perfadd"] = false;
@@ -80,7 +85,7 @@ async function drawLoop() {
   setTimeout(drawLoop, 30);
 }
 async function main() {
-  log("human version:", human.version, "| tfjs version:", human.tf.version_core);
+  log("human version:", human.version, "| tfjs version:", human.tf.version["tfjs-core"]);
   log("platform:", human.env.platform, "| agent:", human.env.agent);
   status("loading...");
   await human.load();
diff --git a/demo/typescript/index.ts b/demo/typescript/index.ts
index 494f3acf..68369f4d 100644
--- a/demo/typescript/index.ts
+++ b/demo/typescript/index.ts
@@ -10,15 +10,15 @@
 import { Human } from '../../dist/human.esm.js'; // equivalent of @vladmandic/Human
 
 const humanConfig = { // user configuration for human, used to fine-tune behavior
-  modelBasePath: '../../models',
-  filter: { equalization: true },
   // backend: 'webgpu' as 'webgpu,
   // async: true,
-  // face: { enabled: false, detector: { rotation: true }, iris: { enabled: false }, description: { enabled: false }, emotion: { enabled: false } },
-  // body: { enabled: false },
-  // hand: { enabled: false },
-  // object: { enabled: true },
-  // gesture: { enabled: true },
+  modelBasePath: '../../models',
+  filter: { enabled: true, equalization: false },
+  face: { enabled: true, detector: { rotation: false }, mesh: { enabled: true }, iris: { enabled: true }, description: { enabled: true }, emotion: { enabled: true } },
+  body: { enabled: true },
+  hand: { enabled: true },
+  object: { enabled: false },
+  gesture: { enabled: true },
 };
 
 const human = new Human(humanConfig); // create instance of human with overrides from user configuration
@@ -97,7 +97,7 @@ async function drawLoop() { // main screen refresh loop
 }
 
 async function main() { // main entry point
-  log('human version:', human.version, '| tfjs version:', human.tf.version_core);
+  log('human version:', human.version, '| tfjs version:', human.tf.version['tfjs-core']);
   log('platform:', human.env.platform, '| agent:', human.env.agent);
   status('loading...');
   await human.load(); // preload all models
diff --git a/src/human.ts b/src/human.ts
index 8853b862..ebf23c84 100644
--- a/src/human.ts
+++ b/src/human.ts
@@ -124,7 +124,7 @@ export class Human {
    */
   constructor(userConfig?: Partial<Config>) {
     this.env = env;
-    defaults.wasmPath = tf.version_core.includes('-') // custom build or official build
+    defaults.wasmPath = tf.version['tfjs-core'].includes('-') // custom build or official build
       ? 'https://vladmandic.github.io/tfjs/dist/'
       : `https://cdn.jsdelivr.net/npm/@tensorflow/tfjs-backend-wasm@${tf.version_core}/dist/`;
     defaults.modelBasePath = env.browser ? '../models/' : 'file://models/';
@@ -283,7 +283,7 @@ export class Human {
 
     if (this.env.initial) { // print version info on first run and check for correct backend setup
       if (this.config.debug) log(`version: ${this.version}`);
-      if (this.config.debug) log(`tfjs version: ${this.tf.version_core}`);
+      if (this.config.debug) log(`tfjs version: ${this.tf.version['tfjs-core']}`);
       if (!await backend.check(this)) log('error: backend check failed');
       await tf.ready();
       if (this.env.browser) {
diff --git a/src/tfjs/types.ts b/src/tfjs/types.ts
index 955ff924..93631e41 100644
--- a/src/tfjs/types.ts
+++ b/src/tfjs/types.ts
@@ -16,4 +16,4 @@ export type { GraphModel } from '@tensorflow/tfjs-converter/dist/index';
  * @external long
  */
 // eslint-disable-next-line node/no-missing-import
-export type { Long } from 'long';
+// export type { Long } from 'long';
diff --git a/src/util/env.ts b/src/util/env.ts
index 80fde5d8..34989312 100644
--- a/src/util/env.ts
+++ b/src/util/env.ts
@@ -81,7 +81,7 @@ export class Env {
   constructor() {
     this.browser = typeof navigator !== 'undefined';
     this.node = typeof process !== 'undefined';
-    this.tfjs = { version: tf.version_core };
+    this.tfjs = { version: tf.version['tfjs-core'] };
     this.offscreen = typeof OffscreenCanvas !== 'undefined';
     this.initial = true;
     // @ts-ignore WorkerGlobalScope evaluated in browser only
@@ -148,8 +148,8 @@ export class Env {
   async updateCPU() {
     const cpu = { model: '', flags: [] };
     if (this.node && this.platform.startsWith('linux')) {
-      // eslint-disable-next-line global-require
       /*
+      // eslint-disable-next-line global-require
       const fs = require('fs');
       try {
         const data = fs.readFileSync('/proc/cpuinfo').toString();
diff --git a/test/test-main.js b/test/test-main.js
index 35915943..737a8096 100644
--- a/test/test-main.js
+++ b/test/test-main.js
@@ -266,7 +266,7 @@ async function test(Human, inputConfig) {
   config.cacheSensitivity = 0;
   config.warmup = 'none';
   res = await testWarmup(human, 'default');
-  if (res.error !== 'null') log('error', 'failed: warmup none result mismatch');
+  if (res.error !== null) log('error', 'failed: warmup none result mismatch');
   else log('state', 'passed: warmup none result match');
   config.warmup = 'face';
   res = await testWarmup(human, 'default');