Use thread-loader to build js and css

[3y3]

Is there any reason to not use thread-loader for build speed optimization?

[korvin89]

сс @ValeraS

[obenjiro]

Loaders running in a worker pool are limited. Examples:

Loaders cannot emit files.
Loaders cannot use custom loader API (i. e. by plugins).
Loaders cannot access the webpack options.

Some of that may be a blocker, but i think main reason NOT to use it is this
webpack-contrib/thread-loader#98 (comment)

thread-loader has low priority now, we focus on webpack@5 and compatibility, but this will be fixed, we want to use thread-loader as playground for future multithreading in webpack

Last useful commit was September 19th. Looks like this project is not in active development