[ Nicer to have ] Optimize webpack build time

[filrak]

• removing unnecessary loaders
• minimize the scope of loaders

https://webpack.js.org/guides/build-performance/

[lukeromanowicz]

It's also worth to add PNP. I'm working on it but unfortunately, it requires a lot of effort :)

[jissereitsma]

I dived into this a bit: The babel-loader could be improved a bit by adding a cacheDirectory flag to it in the core/webpack.base.config.ts file:

loader: 'babel-loader?cacheDirectory',

Disabling the following line speeds up a bit as well (and obviously disables source mapping, but maybe this is not needed by everyone). In the same file:

devtool: 'source-map',

Parallel processing might do a lot, but this requires heavy refactoring of the current Webpack configuration.

The HardSourceWebpackPlugin plugin doesn't show improvement in my case.

[pschaub]

Maybe the devtool source-map should be replaced with something else from this list with faster build time: https://webpack.js.org/configuration/devtool/