eslint-plugin-github

Installation

npm install --save-dev eslint eslint-plugin-github

Setup

Legacy Configuration (.eslintrc)

Add github to your list of plugins in your ESLint config.

JSON ESLint config example:

{
  "plugins": ["github"]
}

Extend the configs you wish to use.

JSON ESLint config example:

{
  "extends": ["plugin:github/recommended"]
}

Flat Configuration (eslint-config.js)

Import the eslint-plugin-github, and extend any of the configurations using getFlatConfigs() as needed like so:

import github from 'eslint-plugin-github'

export default [
  github.getFlatConfigs().browser,
  github.getFlatConfigs().recommended,
  github.getFlatConfigs().react,
  ...github.getFlatConfigs().typescript,
  {
    files: ['**/*.{js,mjs,cjs,jsx,mjsx,ts,tsx,mtsx}'],
    ignores: ['eslint.config.mjs'],
    rules: {
      'github/array-foreach': 'error',
      'github/async-preventdefault': 'warn',
      'github/no-then': 'error',
      'github/no-blur': 'error',
    },
  },
]

[!NOTE] If you configured the filenames/match-regex rule, please note we have adapted the match regex rule into eslint-plugin-github as the original eslint-filenames-plugin is no longer maintained and needed an ESLint v9 update. Please update the name to github/filenames-match-regex and keep the same configuration. For e.g.:

'github/filenames-match-regex': ['error', '^[a-z0-9-]+(.[a-z0-9-]+)?$']

The available configs are:

• internal
  • Rules useful for github applications.
• browser
  • Useful rules when shipping your app to the browser.
• react
  • Recommended rules for React applications.
• recommended
  • Recommended rules for every application.
• typescript
  • Useful rules when writing TypeScript.

Component mapping (Experimental)

Note: This is experimental and subject to change.

The react config includes rules which target specific HTML elements. You may provide a mapping of custom components to an HTML element in your eslintrc configuration to increase linter coverage.

By default, these eslint rules will check the "as" prop for underlying element changes. If your repo uses a different prop name for polymorphic components provide the prop name in your eslintrc configuration under polymorphicPropName.

{
  "settings": {
    "github": {
      "polymorphicPropName": "asChild",
      "components": {
        "Box": "p",
        "Link": "a"
      }
    }
  }
}

This config will be interpreted in the following way:

• All <Box> elements will be treated as a p element type.
• <Link> without a defined as prop will be treated as a a.
• <Link as='button'> will be treated as a button element type.

Rules

💼 Configurations enabled in.
🔍 Set in the browser configuration.
🔐 Set in the internal configuration.
⚛️ Set in the react configuration.
✅ Set in the recommended configuration.
🔧 Automatically fixable by the --fix CLI option.
❌ Deprecated.

Name	Description	💼	🔧	❌
a11y-aria-label-is-well-formatted	[aria-label] text should be formatted as you would visual text.	⚛️
a11y-no-generic-link-text	disallow generic link text			❌
a11y-no-title-attribute	Guards against developers using the title attribute	⚛️
a11y-no-visually-hidden-interactive-element	Ensures that interactive elements are not visually hidden	⚛️
a11y-role-supports-aria-props	Enforce that elements with explicit or implicit roles defined contain only aria-* properties supported by that role.	⚛️
a11y-svg-has-accessible-name	SVGs must have an accessible name	⚛️
array-foreach	enforce for..of loops over Array.forEach	✅
async-currenttarget	disallow event.currentTarget calls inside of async functions	🔍
async-preventdefault	disallow event.preventDefault calls inside of async functions	🔍
authenticity-token	disallow usage of CSRF tokens in JavaScript	🔐
filenames-match-regex	ensure filenames match a regex naming convention
get-attribute	disallow wrong usage of attribute names	🔍	🔧
js-class-name	enforce a naming convention for js- prefixed classes	🔐
no-blur	disallow usage of Element.prototype.blur()	🔍
no-d-none	disallow usage the d-none CSS class	🔐
no-dataset	enforce usage of Element.prototype.getAttribute instead of Element.prototype.datalist	🔍
no-dynamic-script-tag	disallow creating dynamic script tags	✅
no-implicit-buggy-globals	disallow implicit global variables	✅
no-inner-html	disallow Element.prototype.innerHTML in favor of Element.prototype.textContent	🔍
no-innerText	disallow Element.prototype.innerText in favor of Element.prototype.textContent	🔍	🔧
no-then	enforce using async/await syntax over Promises	✅
no-useless-passive	disallow marking a event handler as passive when it has no effect	🔍	🔧
prefer-observers	disallow poorly performing event listeners	🔍
require-passive-events	enforce marking high frequency event handlers as passive	🔍
unescaped-html-literal	disallow unescaped HTML literals	🔍