linting-neostandard-eslint9

When to use

Use this skill when you need to:

• Set up linting in a JavaScript or TypeScript project
• Use neostandard as a Standard-like ESLint v9 flat-config baseline
• Configure eslint@9 with the flat config system (eslint.config.js/eslint.config.mjs)
• Migrate from standard to neostandard or ESLint v9
• Migrate from legacy .eslintrc* configuration to ESLint v9
• Run linting consistently in CI and local development

How to use

Read individual rule files for implementation details and examples:

• rules/neostandard.md – Install, configure, and extend neostandard with ESLint
• rules/eslint-v9-flat-config.md – Build ESLint v9 flat config for JS/TS projects
• rules/migration-from-standard.md – Migrate from standard to neostandard or ESLint v9
• rules/migration-from-legacy-eslint.md – Migrate from .eslintrc* to flat config safely
• rules/ci-and-editor-integration.md – CI scripts, pre-commit, and editor setup

Core principles

• Prefer reproducible linting with pinned major versions
• Keep config minimal and explicit
• Use flat config for ESLint v9 projects
• Treat lint failures as quality gates in CI
• Enable auto-fix for local workflows, but validate with non-fix CI runs