Awesome ESLint

A list of awesome ESLint configs, plugins, etc.

If you want to contribute, please read the contribution guidelines.

Contents

• Configs
  • Configs by Well-Known Companies/Organizations
  • Other Prominent Configs (100 stars or so)
  • Other Configs
• Preconfigured Configs with ESLint Set up
• Plugins
  • Code Quality
  • Compatiblity
  • CSS in JS
  • Deprecation
  • Embedded
  • Frameworks
  • Languages
  • Libraries
  • Misc
  • Practices
  • Performance
  • Security
  • Style
  • Testing Tools
• Parsers
• Formatters
• Globals
• Tools
• Developing for ESLint
• Tutorials
• Installation and Setup

Configs

Configs by Well-Known Companies/Organizations

• Airbnb - Shareable config for Airbnb's style guide.
• Airbnb-babel - Airbnb's ESLint config with Babel Support.
• Airbnb-typescript - Airbnb's ESLint config with TypeScript support.
• Alloy - Progressive ESLint config for your React/Vue/TypeScript projects.
• ESLint - Contains the ESLint configuration used for projects maintained by the ESLint team.
• Facebook - Sharable config for Facebook's style guide.
• Google - Shareable config for the Google style.
• React App - Sharable config for React projects.
• Shopify - Shareable config for Shopify's style guide.
• Wikimedia - Shareable config for Wikimedia's style guide, used by MediaWiki.

Other Prominent Configs (100 stars or so)

• Auto - Automatically configure ESLint based on your project's dependencies.
• Canonical - Shareable config for Canonical style guide.
• Standard - Shareable config for JavaScript Standard Style.
• XO - Shareable config for XO.

Other Configs

• Adjunct - A reasonable collection of plugins to use alongside your main ESLint configuration.
• Ash-Nazg - One config to rule them all!
• Cecilia - ESLint configuration for awesome projects.
• ES - Shareable config for very strict code.
• Hardcore - The most strict (but practical) ESLint config out there.
• Problems - Shareable config that only catches actual problems, and doesn't enforce stylistic preferences.
• Supermind - Shareable config for Supermind style.

Preconfigured Configs with ESLint Set up

• Node.js Standard Style - Node.js core config.
• prettier-standard - Prettier formatter with custom eslint rules allowed.
• Standard - JavaScript Standard Style.
• Superlint - JavaScript Supermind Style.
• XO - JavaScript happiness style linter ❤️.
• Healthier - Code style agnostic version of Standard, perfect companion to Prettier.

Plugins

Code Quality

• SonarJS - Rules detecting bugs and suspicious patterns.
• Unicorn - Various awesome ESLint rules.

Compatiblity

• Compat - Lint browser compatibility of APIs used (caniuse as an ESLint plugin).
• ecmascript-compat - Disable ECMAScript language features not supported by your browserslist targets.
• es - Disable specific ECMAScript language versions or individual features.
• es5 - ESLint plugin for ES5 users (forbid ES2015+ usage).
• ie11 - Detect unsupported ES6 features in IE11.

CSS in JS

• CSS-modules - Lint undefined or unused rules for css modules.
• Emotion - ESLint rules for emotion.
• Styled Components
  • Better Styled Components - Auto fixable ESlint's rules for styled components.
  • styled-components-a11y - A11y for Styled Components.

Deprecation

• deprecate - Mark functions or modules as deprecated and get lint messages when they are used.
• deprecation - Identifies use of jsdoc @deprecated functions.
• disable - Disable specified plugins using file path patterns and inline comments.

Embedded

• HTML - Linting for JavaScript inside of HTML <script> tags.
• Markdown - Linting for JavaScript inside of Markdown.

Frameworks

• AngularJS - Linting rules to adhere to the John Papa's AngularJS Styleguide.
• Backbone - Linting rules for Backbone.
• Custom Elements - Rules by GitHub for Custom Elements.
• Ember - Linting rules for Ember.
• Hapi - Linting rules for hapi.
• Meteor - Meteor specific linting rules.
• React
  • JSX a11y - Accessibility rules on JSX elements.
  • React - Linting rules for React and JSX.
  • React Hooks - Linting rules for React Hooks.
  • React Native - React Native specific linting rules.
  • React-Redux - React-Redux specific linting rules.
• Svelte - Linting rules for Svelte v3 Components.
• Vue
  • VueJS - Plugin for VueJS.
  • VueJS Scoped CSS - Plugin for Scoped CSS in VueJS.

Languages

• Coffee - Enables linting CoffeeScript files with, with optional linting rules from the Coffeelint library.
• ES5
  • Babel - Adds replacements for built-in rules to include Babel features.
  • import - Linting of ES2015+ import/export syntax, and prevent issues with misspelling of file paths and import names.
• Flow
  • Flow - Flow type linting rules.
  • Flow Errors - Run Flow as an ESLint plugin.
• HTML - ESLint plugin for HTML.
• JSON
  • JSON - Lint your JSON files.
  • JSON, package.json - Lint, format, and auto-fix your JSON files. Sort your package.json.
  • JSON with Comments - ESLint plugin for JSON, JSONC and JSON5.
  • JSON Schema - Validates data defined in JavaScript, JSON, YAML and TOML using JSON Schema Validator.
• MDX - ESLint Parser/Plugin for MDX.
• Node - Additional ESLint's rules for Node.js.
• SQL - SQL linting rules for ESLint.
• TOML - ESLint plugin for TOML.
• TypeScript - Linting rules for TypeScript.
• YAML - ESLint plugin for YAML.

Libraries

• GraphQL
  • dotansimha/graphql-eslint - Validates, prettifies and checks your GraphQL operations and GraphQL schema for best-practices.
  • apollostack/eslint-plugin-graphql - Check your GraphQL query strings against a schema.
• TypeGraphQL - Linting rules for TypeGraphQL, targeted at finding common mistakes.
• jQuery - Linting rules for jQuery, including versioned configs for deprecated features.
• JSDoc - Linting rules for JSDoc comments (including the JavaScript within @example).
• Lodash
  • Lodash - Lodash specific linting rules.
  • Lodash/fp - Lodash/fp specific linting rules.
  • Lodash template - Plugin for Lodash template/Underscore template.
  • Microtemplates (Used in Lodash and Underscore.js)
• Mongodb - Mongodb native Node.js driver linting rules.
• Ramda - Ramda specific linting rules.
• RequireJS - Linting rules for RequireJS.

Misc

• Diff - Run ESLint on your changed lines only. Also supports CI!
• ESLint Comments - Best practices about ESLint directive comments (/*eslint-disable*/, etc.).
• eslint-plugin-write-good-comments - Enforce good writing style in comments.
• eslint-define-config - Provide a defineConfig function for .eslintrc.js files.
• eslint-plugin-eslint-plugin - An ESLint plugin for linting ESLint plugins.
• GitHub - Misc. rules from GitHub.
• @mysticatea/eslint-plugin - Misc. rules.
• @brettz9/eslint-plugin - Misc. rules. of @mysticatea without the personal config.
• Notice - An eslint rule that checks the top of files and fixes them too!
• Only-Error - Convert all rules to errors.
• Only-Warn - Convert all rules to warnings.
• PutOut - an ESLint plugin integrates putout linter into ESLint.
• TypeLint - Introduces types, based on existing schemas (Swagger, Redux) and linting access to object properties, preventing undefined errors.
• Woke - Helps catch insensitive words, promoting an inclusive codebase.

Practices

• array-func - Avoid redundancy when using es2015 array methods and functions.
• arrow functions - ESLint rules to ensure proper arrow function definitions.
• boundaries - Ensures that your architecture boundaries are respected by the elements in your project checking file structure and dependencies.
• fp - ESLint rules for functional programming.
• functional - ESLint rules to disable mutation and promote fp in JavaScript and TypeScript.
• Immutable - Disable all mutation in JavaScript.
• new-with-error - Require errors to be thrown using new.
• no-constructor-bind - Encourages use of class properties by reporting use of this with bind or setting state in constructors.
• no-inferred-method-name - Custom rule for ESLint that checks for inferred method names within object literals.
• no-loops - It's 2019 and you still use loops?
• no-restricted-syntax - Show queried syntax's content in messages.
• no-use-extend-native - Prevent using extended native objects.
• Promise - Best practices when working with promises.
• pure - Enforce pure functions (without side effects).
• RegExp - ESLint plugin for finding regexp mistakes and style guide violations.
• sort-keys-fix - Adds fixer for ESLint sort-keys rule.
• this - Write pure functions, don't allow this.
• toplevel - An eslint plugin for disallow side effect at module toplevel.

Performance

• clean-regex - JavaScript regex linter that aims to help write better regular expressions by pointing out errors and suggesting improvements.
• DOM
• Optimize Regex - Optimize regex literals.
• Perf-Standard plugin and Config

Security

• no-secrets - An eslint plugin that detects potential secrets/credentials.
• no-unsanitized - Checks for innerHTML, outerHTML, etc.
• pii - Checks and enforces PII Compliance of the code. i.e. no email address, birth date, IP address or phone number in comments or string literals.
• ScanJS config and plugin - Security-related rules.
• Security - ESLint rules for Node Security.
• xss - Tries to detect XSS issues in codebase before they end up in production.

Style

• const case - Enforce capitalization of constant primitive literals.
• editorconfig - Derive rules from .editorconfig.
• filenames - Ensure consistent filenames for your JavaScript files.
• Simple import sort - Easy autofixable import sorting.
• Switch case - Switch-case-specific linting rules for ESLint.
• padding - Allows/disallows padding between statements.

Testing Tools

• AVA - Linting rules for AVA.
• Chai
  • expect practices
  • with unused expressions
  • permitted keywords
  • with chai-as-promised plugin
  • globals
• Cucumber - Linting rules for Cucumber.
• Cypress - Linting rules for Cypress.
• Jasmine - Linting rules for Jasmine.
• Jest
  • Enforcing practices - Linting rules for Jest.
  • Enforcing consistent formatting - Formatting rules for Jest.
  • Jest-async - Async linting rule for Jest.
  • Jest-DOM - Linting rules for Jest-DOM.
• Mocha
  • Enforcing practices - Linting rules for Mocha.
  • Enforcing manageability
• QUnit - Linting rules for QUnit.
• Testcafe - Linting rules for Testcafe.
• Testing Library - Linting rules for Testing Library.

Parsers

• Babel - Use Babel's parser for linting all Babel features.
• TypeScript - A TypeScript parser that produces output compatible with ESLint.
• BrightScript - BrightScript plugin for Roku development. Includes Parser and Rules.
• GraphQL - Parser for the GraphQL AST. Includes parser, plugin, processor (for non-graphql files) and rules.

Formatters

• badger - Make SVG-based badges summarizing ESLint results (e.g., for use on a README).
• git-log - ESLint Formatter featuring Git Author, Date, and Hash.
• github - See ESLint errors and warnings directly in pull requests.
• gitlab - Output ESLint results in the GitLab code quality results.
• mo - Good-lookin' ESLint formatter and also for delightful reading experience.
• summary-chart - Format ESLint output into a bar chart.

Globals

• Restricted Globals - Expect window qualifier on globals that may otherwise be confusable as local variables.
• ES and browser globals (originally from ESLint)
• chai globals

Tools

• es-file-traverse - Obtain a list of only those files which are in use based on imports and/or requires from an entry file or files; list passable to ESLint. Intended esp. for linting 3rd party dependencies.
• eslint-cli - This is the eslint command that executes a local installed ESLint.
• eslint-find-rules - Find built-in ESLint rules you don't have in your custom config.
• eslint-index - CLI for finding and managing rules in ESLint config files.
• eslint-multiplexer - Multiplex eslint results and merge results for common files.
• eslint-nibble - Ease into ESLint, by fixing one rule at a time.
• eslint-rule-documentation - Find the url for the documentation of an ESLint rule.
• eslint-watch - Run ESLint with watch mode.
• codacy-eslint - Docker used at Codacy to run ESLint.
• esprint - Run ESLint across multiple threads.
• generator-eslint - Generate ESLint plugin and rules with Yeoman.
• editor-info - Detect whether one is within an editor/IDE and which type, allowing one to tweak ESLint configuration accordingly.

Developing for ESLint

• eslint-docs - Keep your rule descriptions up-to-date across the repository.

Tutorials

• Creating an ESLint Plugin - Article walking through the creation of an ESLint rule and plugin.
• Lint Like It's 2015 - Article walking through the benefits of using ESLint.
• Linting JavaScript with ESLint - Video showing ESLint setup and basics.
• Linting React JSX with ESLint (in ES6) - Video showing how to use React and JSX with ESLint.
• Plugin Module with Mixins - Article on how to write a plugin as a node module containing modular mixin configuration.
• Writing a rule to spot undeclared props hiding in plain sight - Article about creating rules that require scope analysis.

Installation and Setup

• Lintier - CLI to quickly scaffold an ESLint & Prettier setup in a TypeScript project.