@antfu/eslint-config
- Single quotes, no semi
- Auto fix for formatting (aimed to be used standalone without Prettier)
- Designed to work with TypeScript, Vue out-of-box
- Lints also for json, yaml, markdown
- Sorted imports, dangling commas
- Reasonable defaults, best practices, only one-line of config
- Respects
.gitignoreby default - ESLint Flat config, compose easily!
- Using ESLint Stylistic
- Style principle: Minimal for reading, stable for diff, consistent
Important
The main branch is for v1.0-beta, which rewrites to ESLint Flat config, check #250 for more details.
Usage
Install
pnpm i -D eslint @antfu/eslint-configCreate config file
With "type": "module" in package.json (recommended):
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu()With CJS:
// eslint.config.js
const antfu = require('@antfu/eslint-config').default
module.exports = antfu()Note that
.eslintignoreno longer works in Flat config, see customization for more details.
Add script for package.json
For example:
{
"scripts": {
"lint": "eslint .",
"lint:fix": "eslint . --fix"
}
}VS Code support (auto fix)
Install VS Code ESLint extension
Add the following settings to your .vscode/settings.json:
{
// Enable the ESlint flat config support
"eslint.experimental.useFlatConfig": true,
// Disable the default formatter, use eslint instead
"prettier.enable": false,
"editor.formatOnSave": false,
// Auto fix
"editor.codeActionsOnSave": {
"source.fixAll": true,
"source.organizeImports": false
},
// Silent the stylistic rules in you IDE, but still auto fix them
"eslint.rules.customizations": [
{ "rule": "style/*", "severity": "off" },
{ "rule": "*-indent", "severity": "off" },
{ "rule": "*-spacing", "severity": "off" },
{ "rule": "*-spaces", "severity": "off" },
{ "rule": "*-order", "severity": "off" },
{ "rule": "*-dangle", "severity": "off" },
{ "rule": "*-newline", "severity": "off" },
{ "rule": "*quotes", "severity": "off" },
{ "rule": "*semi", "severity": "off" }
],
// Enable eslint for all supported languages
"eslint.validate": [
"javascript",
"javascriptreact",
"typescript",
"typescriptreact",
"vue",
"html",
"markdown",
"json",
"jsonc",
"yaml"
]
}Customization
Since v1.0, we migrated to ESLint Flat config. It provides much better organization and composition.
Normally you only need to import the antfu preset:
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu()And that's it! Or you can configure each integration individually, for example:
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu({
// Enable stylistic formatting rules
// stylistic: true,
// Or customize the stylistic rules
stylistic: {
indent: 2, // 4, or 'tab'
quotes: 'single', // or 'double'
},
// TypeScript and Vue are auto-detected, you can also explicitly enable them:
typescript: true,
vue: true,
// Disable jsonc and yaml support
jsonc: false,
yaml: false,
// `.eslintignore` is no longer supported in Flat config, use `ignores` instead
ignores: [
'./fixtures',
// ...globs
]
})The antfu factory function also accepts any number of arbitrary custom config overrides:
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu(
{
// Configures for antfu's config
},
// From the second arguments they are ESLint Flat Configs
// you can have multiple configs
{
files: ['**/*.ts'],
rules: {},
},
{
rules: {},
},
)Going more advanced, you can also import fine-grained configs and compose them as you wish:
// eslint.config.js
import {
comments,
ignores,
imports,
javascript,
jsdoc,
jsonc,
markdown,
node,
sortPackageJson,
sortTsconfig,
stylistic,
typescript,
unicorn,
vue,
yaml,
} from '@antfu/eslint-config'
export default [
...ignores(),
...javascript(),
...comments(),
...node(),
...jsdoc(),
...imports(),
...unicorn(),
...typescript(),
...stylistic(),
...vue(),
...jsonc(),
...yaml(),
...markdown(),
]Check out the configs and factory for more details.
Thanks to sxzz/eslint-config for the inspiration and reference.
Plugins Renaming
Since flat config requires us to explicitly provide the plugin names (instead of mandatory convention from npm package name), we renamed some plugins to make overall scope more consistent and easier to write.
| New Prefix | Original Prefix | Source Plugin |
|---|---|---|
import/* |
i/* |
eslint-plugin-i |
node/* |
n/* |
eslint-plugin-n |
yaml/* |
yml/* |
eslint-plugin-yml |
ts/* |
@typescript-eslint/* |
@typescript-eslint/eslint-plugin |
style/* |
@stylistic/* |
@stylistic/eslint-plugin |
test/* |
vitest/* |
eslint-plugin-vitest |
test/* |
no-only-tests/* |
eslint-plugin-no-only-tests |
When you want to override rules, or disable them inline, you need to update to the new prefix:
-// eslint-disable-next-line @typescript-eslint/consistent-type-definitions
+// eslint-disable-next-line ts/consistent-type-definitions
type foo = { bar: 2 }Rules Overrides
Certain rules would only be enabled in specific files, for example, ts/* rules would only be enabled in .ts files and vue/* rules would only be enabled in .vue files. If you want to override the rules, you need to specify the file extension:
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu(
{ vue: true, typescript: true },
{
// Remember to specify the file glob here, otherwise it might cause the vue plugin to handle non-vue files
files: ['**/*.vue'],
rules: {
'vue/operator-linebreak': ['error', 'before'],
},
},
{
// Without `files`, they are general rules for all files
rules: {
'style/semi': ['error', 'never'],
},
}
)We also provided an overrides options to make it easier:
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu({
overrides: {
vue: {
'vue/operator-linebreak': ['error', 'before'],
},
typescript: {
'ts/consistent-type-definitions': ['error', 'interface'],
},
yaml: {},
// ...
}
})Type Aware Rules
You can optionally enable the type aware rules by passing the options object to the typescript config:
// eslint.config.js
import antfu from '@antfu/eslint-config'
export default antfu({
typescript: {
tsconfigPath: 'tsconfig.json',
},
})Lint Staged
If you want to apply lint and auto-fix before every commit, you can add the following to your package.json:
{
"simple-git-hooks": {
"pre-commit": "pnpm lint-staged"
},
"lint-staged": {
"*": "eslint --fix"
}
}and then
npm i -D lint-staged simple-git-hooksBadge
If you enjoy this code style, and would like to mention it in your project, here is the badge you can use:
[](https://github.com/antfu/eslint-config)FAQ
Prettier?
How to lint CSS?
This config does NOT lint CSS. I personally use UnoCSS so I don't write CSS. If you still prefer CSS, you can use stylelint for CSS linting.
I prefer XXX...
Sure, you can config and override rules locally in your project to fit your needs. If that still does not work for you, you can always fork this repo and maintain your own.
Check Also
- antfu/dotfiles - My dotfiles
- antfu/vscode-settings - My VS Code settings
- antfu/ts-starter - My starter template for TypeScript library
- antfu/vitesse - My starter template for Vue & Vite app
License
MIT License © 2019-PRESENT Anthony Fu