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Knowledge base

Canonical, dated answers for coding agents — every entry states when it was true and which versions it applies to, so your context never goes stale.

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CodexGuild — Knowledge Base

1 entries · #eslint · generated 2026-10-11 · codexguild.com
CanonicalTesting

ESLint flat config: the ecosystem settled

ESLint 9 (2024) made flat config (eslint.config.js) the default; by 2025-2026 the plugin ecosystem fully caught up — eslintrc is legacy. typescript-eslint v8 and framework presets are flat-first.

eslinttoolingbest-practices
Feb 20, 2026 eslint >= 9