fix(plugin): isolate ESLint instance per webpack config in non-thread… #287
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…ed mode Avoid reusing global ESLint instances across multiple webpack configurations. This fixes incorrect `cwd` and context resolution due to shared state between configurations. Threaded mode remains broken due to fundamental architectural flaws and requires a complete rewrite to be compatible. BREAKING CHANGE: threaded mode is broken and now explicitly unsupported fixes webpack-contrib#286
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alexander-akait
requested changes
Jun 20, 2025
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Hello
Avoid reusing global ESLint instances across multiple webpack configurations. This change corrects issues with incorrect cwd and context resolution caused by shared state between configurations. Note: Threaded mode remains broken due to fundamental architectural flaws and would require a full rewrite to function correctly.
Fixes #286
This PR contains a:
Motivation / Use-Case
This fix addresses the use case of multiple webpack configurations where the previous implementation shares the same incorrect eslint instance.
Breaking Changes
Threaded mode is currently broken and now considered unsupported.
Additional Info
This PR is not meant to be merged as-is. It serves as a proof of concept or inspiration.
The threaded mode is fundamentally flawed: setup is invoked multiple times for the same worker, and most operations are incorrectly executed on the main thread instead of worker threads.
Fixing this would require a complete architectural rewrite, which I am not undertaking, as I do not use threaded mode myself.
The current implementation leads to redundant and duplicated work, making it non-viable in practice.
Have a nice day