Hi
Currently, whenever we are making a change in JS file, we have to re-run bundle script again to generate all bundles again, which takes time and it is pain for developers to watch it till finished.
So Webpack `watch` option lets the Webapck watch for changes in the file and compiles only files which are changed after the initial build.
Also added an option `--progress` which updates on terminal about packages being built and percentage completed.
So, you can run bundle in watch mode in terminal:
``` $ yarn run bundle:watch ```
Please review the patch
Thanks,
Surinder Kumar