Vue-loader: Webpack 5 compatibility: Missing module RuleSet

[Lyrkan]

Version

15.7.1

Reproduction link

https://github.com/Lyrkan/repro-vue-loader-webpack5

Steps to reproduce

• Create a project that uses Webpack 5 and vue-loader 15.7.1
• Try to run Webpack

What is expected?

No error

What is actually happening?

Error: Cannot find module 'webpack/lib/RuleSet'

---

Hi there,

Webpack 5 (that just got into beta) removed the RuleSet class that is currently used by the vue-loader plugin in the following PR: https://github.com/webpack/webpack/pull/9138

This makes any attempt to use the plugin fail with a "Cannot find module webpack/lib/RuleSet" error.

[danyadev]

Any updates?

[18566246732]

webpack5 has rewrited the ruleset module, which means the VueLoaderPlugin cannot use class Ruleset any more, instead, it should use the RuleSetCompiler.

here is my pr #1607, there are too many changes in VueLoaderPlugin, I think vue-loader needs a major version update to support webpack5. hope can get you guys attention, thanks

[18566246732]

as a workaround, you can use this node package only for webpack5
vue-loader-plugin

[18566246732]

@sodatea Hi, I made a new pr according to your suggestions #1613

[lovetingyuan]

npm latest version is still 15.7.2, is it not released to npm?

[sodatea]

Seems an npm issue, as I've found several similar complaints on Twitter:

• https://twitter.com/dsuket/status/1206457571814473728
• https://twitter.com/itsmequinn/status/1206246890427297802

It seems to have taken effect after I've published v15.8.1