[eslint-plugin-react-hooks] Add ESLint v10 support

[azat-io]

Summary

ESLint v10.0.0 was released on February 7, 2026. The current peerDependencies for eslint-plugin-react-hooks only allows up to ^9.0.0, which causes peer dependency warnings when installing with ESLint v10.

This PR:

• Adds ^10.0.0 to the eslint peer dependency range
• Adds eslint-v10 to devDependencies for testing
• Adds an eslint-v10 e2e fixture (based on the existing eslint-v9 fixture)

ESLint v10's main breaking changes (removal of legacy eslintrc config, deprecated context methods) don't affect this plugin - flat config is already supported since v7.0.0, and the deprecated APIs already have fallbacks in place.

How did you test this change?

Ran the existing unit test suite:

cd packages/eslint-plugin-react-hooks && yarn test

All 5082 tests passed.

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[josephsavona]

Awesome, thanks!

[josephsavona]

You'll also need to update https://github.com/facebook/react/blob/main/.github/workflows/runtime_eslint_plugin_e2e.yml#L27-L31 to make sure the new fixture runs in CI

[react-sizebot]

Comparing: 65db100...9867b67

Critical size changes

Includes critical production bundles, as well as any change greater than 2%:

Name	+/-	Base	Current	+/- gzip	Base gzip	Current gzip
oss-stable/react-dom/cjs/react-dom.production.js	=	6.84 kB	6.84 kB	+0.05%	1.88 kB	1.88 kB
oss-stable/react-dom/cjs/react-dom-client.production.js	=	610.35 kB	610.35 kB	=	107.89 kB	107.89 kB
oss-experimental/react-dom/cjs/react-dom.production.js	=	6.84 kB	6.84 kB	+0.05%	1.88 kB	1.88 kB
oss-experimental/react-dom/cjs/react-dom-client.production.js	=	676.28 kB	676.28 kB	=	118.85 kB	118.85 kB
facebook-www/ReactDOM-prod.classic.js	=	696.77 kB	696.77 kB	=	122.49 kB	122.49 kB
facebook-www/ReactDOM-prod.modern.js	=	687.15 kB	687.15 kB	=	120.89 kB	120.89 kB

Significant size changes

Includes any change greater than 0.2%:

(No significant changes)

Generated by 🚫 dangerJS against 9867b67

[azat-io]

@josephsavona Done ✅

[josephsavona]

Thanks!