sideEffect: false, stops webpack importing css

[domarmstrong]

Describe the issue/behavior that seems buggy

In 11.5.0, sideEffects: false was added to the package.json. This has stopped the styles being imported by webpack which now sees it as an unused zero side effect file. See webpack-contrib/mini-css-extract-plugin#102 (comment).

[joshgoebel]

History #3396. @shakyShane Any thoughts? Do we instead need something like sideEffects: ["*.css"]? I'm not really familiar with this in detail.

[verhovsky]

could I get a 11.5.1 release just with this change please? everyone who uses webpack (the most popular build tool) for their website that upgrades highlight.js will break their site essentially

[joshgoebel]

Pushing 11.5.1 now.

[limonte]

Confirming that the fix is working 🎉