Code Quality

ESLint

Pluggable JavaScript/TypeScript linter — uses the modern flat config format.

📖 Official Docs

• ID: eslint
• Category: Quality
• Conflicts with: Biome

What it does

• Installs eslint, @eslint/js, and stack-specific plugins
• Creates eslint.config.mjs with flat config
• Adds lint and lint:fix scripts

Stack-Aware Configuration

Generated Config Example (React + TypeScript)

import js from "@eslint/js";
import tseslint from "typescript-eslint";
import react from "eslint-plugin-react";
import reactHooks from "eslint-plugin-react-hooks";

export default [
  js.configs.recommended,
  ...tseslint.configs.recommended,
  {
    plugins: { react, "react-hooks": reactHooks },
    rules: {
      "react/react-in-jsx-scope": "off",
      "react-hooks/rules-of-hooks": "error",
      "react-hooks/exhaustive-deps": "warn",
    },
  },
  {
    ignores: ["dist/", "node_modules/", "build/", ".next/", ".nuxt/"],
  },
];

Prettier

Opinionated code formatter — enforces consistent code style.

📖 Official Docs

• ID: prettier
• Category: Quality
• Conflicts with: Biome

What it does

• Installs prettier
• Creates .prettierrc.json and .prettierignore
• Adds format and format:check scripts

Biome

Ultra-fast linter & formatter — a Rust-based all-in-one replacement for ESLint + Prettier.

📖 Official Docs

• ID: biome
• Category: Quality
• Conflicts with: ESLint, Prettier

What it does

• Installs @biomejs/biome
• Creates biome.json with linter, formatter, and import organizer enabled
• Adds lint, format, and check scripts

Generated Config

{
  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
  "organizeImports": { "enabled": true },
  "linter": {
    "enabled": true,
    "rules": { "recommended": true }
  },
  "formatter": {
    "enabled": true,
    "indentStyle": "space",
    "indentWidth": 2,
    "lineWidth": 100
  },
  "files": {
    "ignore": [
      "dist/",
      "build/",
      "node_modules/",
      "coverage/",
      ".next/",
      ".nuxt/"
    ]
  }
}

EditorConfig

Consistent editor settings — ensures all contributors use the same indentation, line endings, etc.

📖 Official Docs

• ID: editorconfig
• Category: Quality

What it does

• Creates .editorconfig with sensible defaults (2-space indent, UTF-8, LF line endings)

TypeScript

Strict TypeScript configuration — adds a strict tsconfig.json and a typecheck script.

📖 Official Docs

• ID: typescript
• Category: Quality

What it does

• Creates or updates tsconfig.json with strict settings
• Adds a typecheck script (tsc --noEmit)

Stylelint

CSS/SCSS linter — enforces consistent styles in CSS, SCSS, and CSS-in-JS.

📖 Official Docs

• ID: stylelint
• Category: Quality

markdownlint

Markdown linter — enforces consistent Markdown style.

📖 Official Docs

• ID: markdownlint
• Category: Quality

What it does

• Installs markdownlint-cli2
• Creates .markdownlint-cli2.jsonc config
• Adds a lint:md script

cspell

Spell checker for code — catches typos in source code, comments, and docs.

📖 Official Docs

• ID: cspell
• Category: Quality

What it does

• Installs cspell
• Creates cspell.json with tech dictionaries enabled
• Adds a spell script