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
The MDN page inventory as a big JSON object.
HTML parser and non-strict validator
Compatibility utilities for ESLint
ESLint JavaScript language implementation
TypeScript definitions for deep-diff
TypeScript definitions for mocha
TypeScript definitions for node
TypeScript definitions for yargs
Custom error messages in JSON Schemas for Ajv validator
Format validation for Ajv v7+
output coverage reports using Node.js' built in coverage
Compare semver version strings to find greater, equal or lesser.
Javascript utility for calculating deep difference, capturing changes, and applying changes across objects; for nodejs and the browser.
A JavaScript text diff implementation.
Test if an ES module is run directly (require.main replacement)
Import with sanity.
JSDoc linting rules for ESLint.
Additional ESLint's rules for Node.js
Enforce best practices for JavaScript promises
deterministic `JSON.stringify()` - a faster version of substack's json-stable-strigify without jsonify
The fastest directory crawler & globbing alternative to glob, fast-glob, & tiny-glob. Crawls 1m files in < 1s
compile json schema to typescript typings
Simple git hooks manager
A markdown parser built for speed
simple, flexible, fun test framework
TypeScript is a language for application scale JavaScript development
Tooling which enables you to use TypeScript with ESLint
Curated list of Web platform features
Curated list of technical Web specifications
Simple XML to JavaScript object converter.
yargs the modern, pirate-themed, successor to optimist.
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