DokDuk's ESLint config

• Auto fix for formatting (aimed to be used standalone without Prettier)
• Reasonable defaults, best practices, only one line of config
• Designed to work with TypeScript, JSX, Vue, JSON, YAML, Toml, Markdown, etc. Out-of-box.
• ESLint Flat config, compose easily!
• Style principle: Minimal for reading, stable for diff, consistent
  • Sorted imports, dangling commas
  • Single quotes, no semi
  • Using ESLint Stylistic
• Respects .gitignore by default
• Requires ESLint v9.5.0+

Please keep in mind that this is still a personal config with a lot opinions. Changes might not always be pleased by everyone and every use cases.

Usage

ni -D eslint @dokduk/eslint-config

And create eslint.config.mjs in your project root:

// eslint.config.mjs
import { dokduk } from '@dokduk/eslint-config'

export default dokduk()

IDE Support - Auto fix on save

Install VS Code ESLint extension

Add the following settings to your .vscode/settings.json:

{
  // Disable the default formatter, use eslint instead
  "prettier.enable": false,
  "editor.formatOnSave": false,

  // Auto fix
  "editor.codeActionsOnSave": {
    "source.fixAll.eslint": "explicit",
    "source.organizeImports": "never"
  },

  // Silent the stylistic rules in you IDE, but still auto fix them
  "eslint.rules.customizations": [
    { "rule": "style/*", "severity": "off", "fixable": true },
    { "rule": "format/*", "severity": "off", "fixable": true },
    { "rule": "*-indent", "severity": "off", "fixable": true },
    { "rule": "*-spacing", "severity": "off", "fixable": true },
    { "rule": "*-spaces", "severity": "off", "fixable": true },
    { "rule": "*-order", "severity": "off", "fixable": true },
    { "rule": "*-dangle", "severity": "off", "fixable": true },
    { "rule": "*-newline", "severity": "off", "fixable": true },
    { "rule": "*quotes", "severity": "off", "fixable": true },
    { "rule": "*semi", "severity": "off", "fixable": true }
  ],

  // Enable eslint for all supported languages
  "eslint.validate": [
    "javascript",
    "javascriptreact",
    "typescript",
    "typescriptreact",
    "vue",
    "html",
    "markdown",
    "json",
    "jsonc",
    "yaml",
    "toml",
    "xml",
    "gql",
    "graphql",
    "astro",
    "svelte",
    "css",
    "less",
    "scss",
    "pcss",
    "postcss"
  ]
}