feat(settings): support chunkFilename as function

[yoannmoinet]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

Lately we split our webpack build in different processes.

So mini-css-extract-plugin was creating chunks named 1.min.css for different modules in each builds, overwriting the chunk from other builds. It just wasn't configured to add the hash to the name.

We configured it to add the hash to the name using the chunkFilename setting.

But, it named our common.min.css bundle as a chunk making it common.<hash>.min.css.

The issue is that we load this file explicitly in our templates, so we couldn't predict the new name.

A solution was to use a function for chunkFilename, just like webpack's configurations. But this plugin didn't support functions for this setting.

Breaking Changes

Not breaking.

Additional Info

[jsf-clabot]

All committers have signed the CLA.

[alexander-akait]

chunkFilename is soft deprecated for webpack@5

[yoannmoinet]

What would be the correct process in webpack@5 then?

[alexander-akait]

Supported (only webpack@5)