add gund/eslint-plugin-deprecation#79 to the ones that need support and thanks for this list!

@vincentbriglia eslint-plugin-deprecation doesn't yet support flat config, so it's relegated to the other list: gund/eslint-plugin-deprecation#85

v9 support was added to eslint-plugin-solid in solidjs-community/eslint-plugin-solid#140, with solidjs-community/eslint-plugin-solid#141 awaiting a peer dependency update

• eslint-plugin-cypress now supports ESLint 9.x in release v3.2.0 through PR feat: support eslint v9 through @eslint/eslintrc cypress-io/eslint-plugin-cypress#203.

• The README includes instructions for using release v3.2.0 with ESLint v7, v8 and v9.

• Thanks to the ESLint team for support regarding backwards compatibility of the API Docs: context migration suggestions fail on earlier v8 versions eslint.org#559!

• Work is on-going regarding flat config updates.

https://github.com/testing-library/eslint-plugin-testing-library might be a good one to track as well. Here is their bug about the migration: testing-library/eslint-plugin-testing-library#899

@julienw that'd be a good one to include, but it doesn't yet support flat config: testing-library/eslint-plugin-testing-library#853. See #18093.

As a note, we've now introduced a compatibility package for issues related to the ESLint v9 rule API changes.

A few more:

• i18n-json unmaintained for 2 years, issue referencing flat config support,
• chai-expect, issue referencing flat config support
• knex

vscode-eslint extension support: microsoft/vscode-eslint#1644

NX support was merged in nrwl/nx#24632. I think there is already an released version with v9 support as well.

NX support was merged in nrwl/nx#24632. I think there is already an released version with v9 support as well.

I'm not sure if they support eslint 9 or not because of nrwl/nx#25938

PR submitted (still pending review) for jsx-a11y jsx-eslint/eslint-plugin-jsx-a11y#1009

lol, "still" after 2 minutes :-p i'll take a look

I totally didn't intend to emphasize the "still" haha

Draft PR for the formatjs plugin: formatjs/formatjs#4505

PR submitted (still pending review) for jsx-a11y jsx-eslint/eslint-plugin-jsx-a11y#1009

This has been merged, pending release

v6.10.0 of eslint-plugin-a11y is now released with eslint v9 support.

According to this comment and listed peer dependencies, eslint-plugin-import still does not support eslint@9, though this tracking table indicates that it does. I believe this update was made in error because the issue linked here is the issue to support flat config, import-js/eslint-plugin-import#2556, which was closed, but there is a separate (and currently locked) issue to support eslint@9: import-js/eslint-plugin-import#2948

👍 corrected.

According to this comment and listed peer dependencies, eslint-plugin-import still does not support eslint@9, though this tracking table indicates that it does. I believe this update was made in error because the issue linked here is the issue to support flat config, import-js/eslint-plugin-import#2556, which was closed, but there is a separate (and currently locked) issue to support eslint@9: import-js/eslint-plugin-import#2948

There's a pr in progress too

According to import-js/eslint-plugin-import#2556 (comment) and listed peer dependencies, eslint-plugin-import still does not support eslint@9, though this tracking table indicates that it does. I believe this update was made in error because the issue linked here is the issue to support flat config, import-js/eslint-plugin-import#2556, which was closed, but there is a separate (and currently locked) issue to support eslint@9: import-js/eslint-plugin-import#2948

In the meantime, eslint-plugin-import-x has been updated to support both ESLint v9 and Flat Config.

I confirm the ember's default plugins are all eslint 9 (and flat config) compatible: embroider-build/app-blueprint#84

• eslint-plugin-ember
• eslint-plugin-qunit <- not yet on the list
• eslint-plugin-n
• eslint-plugin-prettier (don't @ me about this one)

🤔 @NullVoxPopuli all those are ✅ on this list, are looking at the same thing?

oh! I didn't see qunit on there before. apologies!

formatjs supports ESLint 9 since 4.14.0, although only 5.0.0 can be installed via npm.

FYI, import-js/eslint-plugin-import#2996 has been merged 🎉

@pd-be, that’s true but a new release is still pending: import-js/eslint-plugin-import#2948 (comment)

Emoji status updated to 📦 in the meantime. Thanks!

Would eslint-plugin-etc be considered for this list?

Latest version v2.0.3 is giving a warning for unmet peer dependency eslint@^v8.0.0. Flat config is already supported

Should eslint-plugin-react-hooks not also be added to this list?

Should eslint-plugin-react-hooks not also be added to this list?

From the original post:

If the plugin you're looking for isn't in this list, check #18093. This list treats flat config support as a prerequisite for full ESLint 9 support.