diff --git a/package.json b/package.json
index 402ff05c..83a3505e 100644
--- a/package.json
+++ b/package.json
@@ -19,22 +19,29 @@
     "type": "git",
     "url": "git+https://github.com/vladmandic/human.git"
   },
-  "dependencies": {},
+  "dependencies": {
+  },
   "peerDependencies": {},
   "devDependencies": {
-    "@tensorflow/tfjs": "^2.7.0",
+    "@tensorflow/tfjs-backend-cpu": "^2.7.0",
     "@tensorflow/tfjs-backend-wasm": "^2.7.0",
+    "@tensorflow/tfjs-backend-webgl": "^2.7.0",
+    "@tensorflow/tfjs-converter": "^2.7.0",
+    "@tensorflow/tfjs-core": "^2.7.0",
+    "@tensorflow/tfjs-data": "^2.7.0",
+    "@tensorflow/tfjs-layers": "^2.7.0",
     "@tensorflow/tfjs-node": "^2.7.0",
+    "@tensorflow/tfjs": "^2.7.0",
     "@vladmandic/pilogger": "^0.2.7",
     "chokidar": "^3.4.3",
     "dayjs": "^1.9.6",
     "esbuild": "^0.8.9",
-    "eslint": "^7.13.0",
     "eslint-config-airbnb-base": "^14.2.1",
     "eslint-plugin-import": "^2.22.1",
     "eslint-plugin-json": "^2.1.2",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-promise": "^4.2.1",
+    "eslint": "^7.13.0",
     "rimraf": "^3.0.2",
     "seedrandom": "^3.0.5",
     "simple-git": "^2.22.0"
diff --git a/src/age/age.js b/src/age/age.js
index 76f2178e..5cfa707a 100644
--- a/src/age/age.js
+++ b/src/age/age.js
@@ -1,4 +1,4 @@
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 import * as profile from '../profile.js';
 
 const models = {};
diff --git a/src/emotion/emotion.js b/src/emotion/emotion.js
index 7da8c0b7..c167c5c1 100644
--- a/src/emotion/emotion.js
+++ b/src/emotion/emotion.js
@@ -1,4 +1,4 @@
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 import * as profile from '../profile.js';
 
 const annotations = ['angry', 'disgust', 'fear', 'happy', 'sad', 'surpise', 'neutral'];
diff --git a/src/gender/gender.js b/src/gender/gender.js
index 1f987782..d2902e8f 100644
--- a/src/gender/gender.js
+++ b/src/gender/gender.js
@@ -1,4 +1,4 @@
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 import * as profile from '../profile.js';
 
 const models = {};
diff --git a/src/hand/box.js b/src/hand/box.js
index 1510b8f4..bcdcfcc9 100644
--- a/src/hand/box.js
+++ b/src/hand/box.js
@@ -14,7 +14,7 @@
  * limitations under the License.
  * =============================================================================
  */
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 
 function getBoxSize(box) {
   return [
diff --git a/src/hand/handdetector.js b/src/hand/handdetector.js
index e5061820..3edc584b 100644
--- a/src/hand/handdetector.js
+++ b/src/hand/handdetector.js
@@ -15,7 +15,7 @@
  * =============================================================================
  */
 
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 import * as box from './box';
 
 class HandDetector {
diff --git a/src/hand/handpipeline.js b/src/hand/handpipeline.js
index 3042b370..ff7537ea 100644
--- a/src/hand/handpipeline.js
+++ b/src/hand/handpipeline.js
@@ -15,7 +15,7 @@
  * =============================================================================
  */
 
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 import * as box from './box';
 import * as util from './util';
 
diff --git a/src/hand/handpose.js b/src/hand/handpose.js
index aeae3d91..8a62020b 100644
--- a/src/hand/handpose.js
+++ b/src/hand/handpose.js
@@ -16,7 +16,7 @@
  */
 // https://storage.googleapis.com/tfjs-models/demos/handpose/index.html
 
-import { tf } from '../../dist/tfjs.esm.js';
+import * as tf from '../../dist/tfjs.esm.js';
 import * as handdetector from './handdetector';
 import * as pipeline from './handpipeline';
 import * as anchors from './anchors';
diff --git a/src/human.js b/src/human.js
index 7b5713cf..f348a4fe 100644
--- a/src/human.js
+++ b/src/human.js
@@ -1,4 +1,4 @@
-import { tf, wasm } from '../dist/tfjs.esm.js';
+import * as tf from '../dist/tfjs.esm.js';
 import * as facemesh from './face/facemesh.js';
 import * as age from './age/age.js';
 import * as gender from './gender/gender.js';
@@ -172,7 +172,7 @@ class Human {
 
       if (this.config.backend === 'wasm') {
         this.log('settings wasm path:', this.config.wasmPath);
-        wasm.setWasmPaths(this.config.wasmPath);
+        tf.setWasmPaths(this.config.wasmPath);
         const simd = await tf.env().getAsync('WASM_HAS_SIMD_SUPPORT');
         if (!simd) this.log('warning: wasm simd support is not enabled');
       }
diff --git a/src/image.js b/src/image.js
index fd89d0f0..63f48405 100644
--- a/src/image.js
+++ b/src/image.js
@@ -1,4 +1,4 @@
-import { tf } from '../dist/tfjs.esm.js';
+import * as tf from '../dist/tfjs.esm.js';
 import * as fxImage from './imagefx.js';
 
 // internal temp canvases
diff --git a/src/tf.js b/src/tf.js
index 517e7531..0eda0669 100644
--- a/src/tf.js
+++ b/src/tf.js
@@ -1,4 +1,44 @@
 // wrapper to load tfjs in a single place so version can be changed quickly
 
-export * as tf from '@tensorflow/tfjs/dist/index.js';
-export * as wasm from '@tensorflow/tfjs-backend-wasm/dist/index.js';
+// simplified
+// { modules: 1061, moduleBytes: 3772720, outputBytes: 1531035 }
+
+export * from '@tensorflow/tfjs/dist/index.js';
+export * from '@tensorflow/tfjs-backend-wasm/dist/index.js';
+
+// modular
+// { modules: 1064, moduleBytes: 3793219, outputBytes: 1535600 }
+
+/*
+// get versions of all packages.
+import { version as tfjs } from '@tensorflow/tfjs/package.json';
+import { version as versionCore } from '@tensorflow/tfjs-core/package.json';
+import { version as versionData } from '@tensorflow/tfjs-data/package.json';
+import { version as versionLayers } from '@tensorflow/tfjs-layers/package.json';
+import { version as versionConverter } from '@tensorflow/tfjs-converter/package.json';
+// for backends, get version from source so it can register backend during import
+import { version_cpu } from '@tensorflow/tfjs-backend-cpu/dist/index.js';
+import { version_webgl } from '@tensorflow/tfjs-backend-webgl/dist/index.js';
+import { version_wasm } from '@tensorflow/tfjs-backend-wasm/dist/index.js';
+
+// export all
+export * from '@tensorflow/tfjs-core/dist/index.js';
+export * from '@tensorflow/tfjs-layers/dist/index.js';
+export * from '@tensorflow/tfjs-converter/dist/index.js';
+export * as data from '@tensorflow/tfjs-data/dist/index.js';
+export * from '@tensorflow/tfjs-backend-cpu/dist/index.js';
+export * from '@tensorflow/tfjs-backend-webgl/dist/index.js';
+export * from '@tensorflow/tfjs-backend-wasm/dist/index.js';
+
+// export versions
+export const version = {
+  tfjs,
+  'tfjs-core': versionCore,
+  'tfjs-data': versionData,
+  'tfjs-layers': versionLayers,
+  'tfjs-converter': versionConverter,
+  'tfjs-backend-cpu': version_cpu,
+  'tfjs-backend-webgl': version_webgl,
+  'tfjs-backend-wasm': version_wasm,
+};
+*/