title: error when running yarn watch with a tensorflowjs project
body: <p>I am using ubuntu 18 with yarn and node v 8.11.3
  When running the example here
  With the following shell commands</p>
  
  <pre><code>git clone https://github.com/tensorflow/tfjs-examples
  cd tfjs-examples/webcam-transfer-learning
  yarn
  yarn watch
  </code></pre>
  
  <p>I am getting the following error when getting to the last line of code:</p>
  
  <blockquote>
    <p>yarn run v1.9.4 $ cross-env NODE_ENV=development parcel index.html
    --no-hmr --open Server running at <a href="http://localhost:1234" rel="nofollow noreferrer">http://localhost:1234</a> hourglass_flowing_sand Building asyncToGenerator.js... events.js:183
    throw er; // Unhandled 'error' event ^</p>
    
    <p>Error: watch
    /home/user/WebstormProjects/tfjs-examples/webcam-transfer-learning/node_modules/core-js/modules/es6.math.fround.js
    ENOSPC at _errnoException (util.js:992:11) at FSWatcher.start
    (fs.js:1382:19) at Object.fs.watch (fs.js:1408:11) at
    createFsWatchInstance
    (/home/user/WebstormProjects/tfjs-examples/webcam-transfer-learning/node_modules/chokidar/lib/nodefs-handler.js:37:15)
    at setFsWatchListener
    (/home/user/WebstormProjects/tfjs-examples/webcam-transfer-learning/node_modules/chokidar/lib/nodefs-handler.js:80:15)
    at FSWatcher.NodeFsHandler._watchWithNodeFs
    (/home/user/WebstormProjects/tfjs-examples/webcam-transfer-learning/node_modules/chokidar/lib/nodefs-handler.js:232:14) at FSWatcher.NodeFsHandler._handleFile
    (/home/uwer/WebstormProjects/tfjs-examples/webcam-transfer-learning/node_modules/chokidar/lib/nodefs-handler.js:259:21) at FSWatcher.
    (/home/user/WebstormProjects/tfjs-examples/webcam-transfer-learning/node_modules/chokidar/lib/nodefs-handler.js:480:21) at FSReqWrap.oncomplete (fs.js:153:5) error Command failed with exit
    code 1. info Visit <a href="https://yarnpkg.com/en/docs/cli/run" rel="nofollow noreferrer">https://yarnpkg.com/en/docs/cli/run</a> for
    documentation about this command.</p>
  </blockquote>
  
  <p>I had no luck finding anything about it.
  I tried changing the tfjs version with no luck
  I upgraded Node, and tried to downgrade it to earlier stable versions.
  We tried running this on a windows machine, and it worked.</p>
  
  <p>We tried using the same versions that are working on a windows machine: npm 8.10 &amp; yarn 5.04 with no luck</p>
  
  <p>What might be the issue here?</p>
  
  <p>Thanks</p>