ESLint config _{by pvtnbr}

This ESLint configuration was originally forked from Airbnb's ESLint config, taking inspiration from their comprehensive JavaScript style guide.

It's been enhanced with plugins, cutting edge tooling, and offers a comprehensive linting solution for a wide range of JavaScript ecosystems, including TypeScript, React, Vue.js, and Markdown code blocks.

Features

• Streamlined syntax: Single quotes, semicolons, tabs, and arrow functions for a clear & intentional coding style.

• Versatile language support: Tailored for TypeScript, React, Vue.js, and even Markdown code blocks, ensuring a wide range of applications.

• Handy CLI command Comes with a quick and easy-to-use CLI command, which even supports eslint.config.ts.

• Extended plugin support: A rich set of plugins to lint ESlint comments, imports, JSON, YAML and more.

What does the linted code look like?

Checkout the code fixtures from the passing tests here.

Install

1pnpm i -D @pvtnbr/eslint-config

lint Command

This package includes a lint CLI command as a direct alternative to eslint, allowing you to lint your code with this config without any configuration or setup.

Lint files in the current directory

1pnpm lint .

Apply auto fix

1pnpm lint . --fix

Lint with caching enabled

1pnpm lint --cache .

Lint only staged files

1pnpm lint --staged .

Specify Node.js files

1pnpm lint --node ./build .

Optional package.json script

Adding it to package.json#scripts gives you the convenience of not needing to pass in the current directory (.) every time so you can simply run pnpm lint instead. Also follows the best practice of documenting available commands in a central place.

1  "scripts": {
2+   "lint": "lint .",
3    "build": "..."
4    "dev": "..."
5  }

Configuration

If you'd like to customize the linting rules further, you can add one of these ESLint config files to your project root and lint will detect them automatically:

• eslint.config.ts: The typed version of the configuration file, ideal if you are working with TypeScript.

• eslint.config.js: A standard JavaScript file for ESLint configuration, suitable for projects not using TypeScript.

[!NOTE] When creating your own ESLint config file, you must manually add the pvtnbr config. Read the section below to learn how.

--help

lint

by @pvtnbr/eslint-config

Usage:
  lint [flags...] <files...>

Flags:
      --cache                          Only check changed files
      --cache-location <string>        Path to the cache file or directory
      --fix                            Automatically fix problems
  -h, --help                           Show help
      --ignore-pattern <string>        Pattern of files to ignore
      --node <string>                  Enable Node.js rules. Pass in a glob to specify files
      --quiet                          Report errors only
      --staged                         Only lint staged files within the files passed in

ESLint setup

To use the eslint command, create a flat configuration file eslint.config.js at your project root.

[!TIP] If you'd like to use TypeScript for your config file (eslint.config.ts), use the lint command from the previous section. The eslint command only supports eslint.config.js.

Simple config

If you want a simple setup with no customization, create the following eslint.config.js:

Module:

1export { default } from '@pvtnbr/eslint-config'

CommonJS:

1module.exports = require('@pvtnbr/eslint-config')

Extended config

In eslint.config.js:

Module:

1// @ts-check
2
3import { defineConfig, pvtnbr } from '@pvtnbr/eslint-config'
4
5export default defineConfig([
6    {
7        // Don't lint these files
8        ignores: [
9            'tests/fixtures/**/*'
10        ]
11    },
12
13    // Configure the pvtnbr config
14    ...pvtnbr({
15
16        // Indicate Node.js project
17        node: true,
18
19        // Indicate Vue.js project (auto-detected by default)
20        vue: true
21    })
22
23    // Other configs...
24])

CommonJS:

1// @ts-check
2
3const { defineConfig, pvtnbr } = require('@pvtnbr/eslint-config')
4
5module.exports = defineConfig([
6    {
7        // Don't lint these files
8        ignores: [
9            'tests/fixtures/**/*'
10        ]
11    },
12
13    // Configure the pvtnbr config
14    ...pvtnbr({
15
16        // Indicate Node.js project or pass in file paths
17        node: true
18    })
19
20    // Other configs...
21])

[!TIP] If you'd like to type check your eslint.config.js file, you can add // @ts-check to the top.

Linting coverage

This ESLint config comprehensively supports a variety of languages and file types, ensuring coding standards and best practices across your project.

Language/File Type	Extensions
JavaScript	.js, .cjs, .mjs
Node.js	.cjs, .mjs
Service Workers	.sw.js, .sw.ts
TypeScript	.ts, .cts, .mts, .d.ts
Vue.js	.vue
React	.jsx, .tsx
JSON	.json, .json5, .jsonc
YML	.yml, .yaml
Markdown	.md

Integrated plugins

Each plugin in this ESLint configuration targets specific aspects of your code, ensuring quality and consistency.

Plugin	Focus area
eslint-comments	ESLint directive comments
node	Node.js coding practices
@typescript-eslint	TypeScript coding Practices
@stylistic	JavaScript & TypeScript code style
promise	Promises best practices
regexp	Regular Expressions best practices
import	ES6+ Import/Export
jsonc	JSON, JSON5, and JSONC style
yml	YAML style
vue	Vue.js Templates & Scripts
react	React best practices
markdown	Markdown embedded code blocks
no-use-extend-native	Native prototype extensions
unicorn	Miscellaneous code quality rules
Custom	Custom rules made for this config

API

pvtbr(options)

The main config factory. It takes an object of options and returns a config object.

options.node

Type: boolean | string[]

Default: false

Whether to lint Node.js code. When true, it will treat all files as Node.js files. You can also pass in an array of glob patterns to specify which files are Node.js files.

defineConfig(configs)

An identity function to enforce type checking on the config.

configs

Type: FlatConfig | FlatConfig[]

Other ESLint configs

Make sure you also check out these awesome ESLint configs. They are a constant source of inspiration for me, and are great alternatives to consider.

• antfu/eslint-config by @antfu
• sxzz/eslint-config by @sxzz
• @ota-meshi/eslint-plugin by @ota-meshi
• standard config by @feross