linting-neostandard-eslint9

When to use

• 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

• 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