mdn/browser-compat-data

Browser compatibility data for Web technologies as displayed on MDN

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The `@mdn/browser-compat-data` package provides machine‑readable compatibility tables for web technologies—including HTML, CSS, JavaScript APIs, and more—so developers can reliably check how features work across browsers and runtimes. It’s intended for anyone building tools, IDEs, documentation sites, test frameworks, or applications that need up‑to‑date, structured browser‑support information.

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Support the dependencies of mdn/browser-compat-data

ddbeck/mdn-content-inventory

The MDN page inventory as a big JSON object.

desertnet/html-parser

HTML parser and non-strict validator

eslint/rewrite

Compatibility utilities for ESLint

eslint/eslint

ESLint JavaScript language implementation

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for deep-diff

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for mocha

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for node

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for yargs

epoberezkin/ajv-errors

Custom error messages in JSON Schemas for Ajv validator

ajv-validator/ajv-formats

Format validation for Ajv v7+

bcoe/c8

output coverage reports using Node.js' built in coverage

omichelsen/compare-versions

Compare semver version strings to find greater, equal or lesser.

flitbit/diff

Javascript utility for calculating deep difference, capturing changes, and applying changes across objects; for nodejs and the browser.

kpdecker/jsdiff

A JavaScript text diff implementation.

tschaub/es-main

Test if an ES module is run directly (require.main replacement)

import-js/eslint-plugin-import

Import with sanity.

gajus/eslint-plugin-jsdoc

JSDoc linting rules for ESLint.

mysticatea/eslint-plugin-node

Additional ESLint's rules for Node.js

eslint-community/eslint-plugin-promise

Enforce best practices for JavaScript promises

epoberezkin/fast-json-stable-stringify

deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify

thecodrr/fdir

The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s

bcherny/json-schema-to-typescript

compile json schema to typescript typings

evilmartians/lefthook

Simple git hooks manager

markedjs/marked

A markdown parser built for speed

mochajs/mocha

simple, flexible, fun test framework

microsoft/TypeScript

TypeScript is a language for application scale JavaScript development

typescript-eslint/typescript-eslint

Tooling which enables you to use TypeScript with ESLint

web-platform-dx/web-features

Curated list of Web platform features

w3c/browser-specs

Curated list of technical Web specifications

Leonidas-from-XIV/node-xml2js

Simple XML to JavaScript object converter.

yargs/yargs

yargs the modern, pirate-themed, successor to optimist.

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499 contributions

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493 contributions

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Support the dependencies of mdn/browser-compat-data

ddbeck/mdn-content-inventory

The MDN page inventory as a big JSON object.

desertnet/html-parser

HTML parser and non-strict validator

eslint/rewrite

Compatibility utilities for ESLint

eslint/eslint

ESLint JavaScript language implementation

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for deep-diff

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for mocha

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for node

DefinitelyTyped/DefinitelyTyped

TypeScript definitions for yargs

epoberezkin/ajv-errors

Custom error messages in JSON Schemas for Ajv validator

ajv-validator/ajv-formats

Format validation for Ajv v7+

bcoe/c8

output coverage reports using Node.js' built in coverage

omichelsen/compare-versions

Compare semver version strings to find greater, equal or lesser.

flitbit/diff

Javascript utility for calculating deep difference, capturing changes, and applying changes across objects; for nodejs and the browser.

kpdecker/jsdiff

A JavaScript text diff implementation.

tschaub/es-main

Test if an ES module is run directly (require.main replacement)

import-js/eslint-plugin-import

Import with sanity.

gajus/eslint-plugin-jsdoc

JSDoc linting rules for ESLint.

mysticatea/eslint-plugin-node

Additional ESLint's rules for Node.js

eslint-community/eslint-plugin-promise

Enforce best practices for JavaScript promises

epoberezkin/fast-json-stable-stringify

deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify

thecodrr/fdir

The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s

bcherny/json-schema-to-typescript

compile json schema to typescript typings

evilmartians/lefthook

Simple git hooks manager

markedjs/marked

A markdown parser built for speed

mochajs/mocha

simple, flexible, fun test framework

microsoft/TypeScript

TypeScript is a language for application scale JavaScript development

typescript-eslint/typescript-eslint

Tooling which enables you to use TypeScript with ESLint

web-platform-dx/web-features

Curated list of Web platform features

w3c/browser-specs

Curated list of technical Web specifications

Leonidas-from-XIV/node-xml2js

Simple XML to JavaScript object converter.

yargs/yargs

yargs the modern, pirate-themed, successor to optimist.