Expose build manifest

[gaearon]

We should include an additional file as the build output. This file should contain a mapping of asset file names so that tools can pick it up without having to parse index.html. This is useful for integrations like this: http://myappincome.co.uk/how-to-make-a-react-js-wordpress-plugin/.

AFAIK Webpack already provides access to such object via its API, we just need to figure out how to write it to a file, and decide on the filename.

[scoland]

Could we utilize something like this: https://www.npmjs.com/package/webpack-manifest-plugin?

[gaearon]

Yep, something like this.

[lukyth]

Should we just use webpack-manifest-plugin on react-scripts/config/webpack.config.prod.js as @scoland have mentioned? And for the filename, I'd name it asset-manifest.json, since some user might already use manifest.json for their Web App Manifest already.

[gaearon]

@lukyth Sounds reasonable.

[ThorstenBruening]

Well done!