Regression in support for NodeJS between v0.13.5 and 0.14.1

[Bluebie]

TensorFlow.js version

0.14.1

Browser version

NodeJS v11.3.0 (installed via Homebrew)

Describe the problem or feature request

In 0.14.1 requiring tfjs and tfjs-node in a nodejs script does not seem to register the C version of tensorflow correctly. Models cannot be saved out to a file using the file:// handler (errors saying no appropriate handler available), training goes unusually slowly (Javascript CPU?)

Code to reproduce the bug / link to feature request

grab this: Bluebie/motion-estimation-tfjs@2b2f369

npm i
node index

and you should see the file:// handler missing error, e.g:

phx@amanita ~/D/motion-estimation-tfjs> node index
cpu backend was already registered. Reusing existing backend
2018-12-17 19:53:22.294912: I tensorflow/core/platform/cpu_feature_guard.cc:141] Your CPU supports instructions that this TensorFlow binary was not compiled to use: SSE4.2 AVX AVX2 FMA
Loading training dataset
Loaded pictures
Setting up model...
Training, batches remaining: 250
============================= Model Accuracy on testset: 53.6% - batch 1
(node:34666) UnhandledPromiseRejectionWarning: Error: Cannot find any save handlers for URL 'file://./motionDense1'
    at new ValueError (/Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/errors.js:36:28)
    at Sequential.<anonymous> (/Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/engine/training.js:906:39)
    at step (/Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/engine/training.js:42:23)
    at Object.next (/Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/engine/training.js:23:53)
    at /Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/engine/training.js:17:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/engine/training.js:13:12)
    at Sequential.Model.save (/Users/phx/Downloads/motion-estimation-tfjs/node_modules/@tensorflow/tfjs-layers/dist/engine/training.js:898:16)
    at main (/Users/phx/Downloads/motion-estimation-tfjs/index.js:62:38)
(node:34666) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2)
(node:34666) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

[nkreeger]

Currently @tensorflow/tfjs-node ships the @tensorflow/tfjs package as well. This package currently ships 0.13.5: https://github.com/tensorflow/tfjs-node/blob/v0.1.21/package.json#L43

I'm working on a new Node package release that will probably go out today or tomorrow that will include 0.14.1.

[nkreeger]

@Bluebie try now - just published 0.2.0

[Bluebie]

Seems to be working well now! Thanks!