shared-tooling-eslint-prettier
ESLint & Prettier
Quick Guide: ESLint 9+ flat config with
defineConfig()andglobalIgnores(). typescript-eslint v8+ withprojectService: true. Prettier shared config with consistent formatting. eslint-config-prettier to disable conflicting rules. eslint-plugin-only-warn for better DX.WARNING: ESLint 10 was released February 2026 and completely removes .eslintrc support. Migrate to flat config now.
<critical_requirements>
CRITICAL: Before Using This Skill
All code must follow project conventions in CLAUDE.md (kebab-case, named exports, import ordering,
import type, named constants)
(You MUST use ESLint 9+ flat config with defineConfig() from eslint/config - NOT legacy .eslintrc)
(You MUST use globalIgnores() for explicit global ignore patterns - NOT bare ignores property)
(You MUST use typescript-eslint v8+ with projectService: true for typed linting)
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