Happy DOM is a JavaScript implementation of a web browser without its graphical user interface. It includes many web standards from WHATWG DOM and HTML.
Extend native Error to create custom errors
Ethereum Name Service (ENS) Name Normalizer
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Correctly declare progressive enhancements for CSS Custom Properties.
Utilities for ESLint plugins.
Codesign Electron Windows apps
Jest custom test environment for JSDOM
HTML Custom Elements Polyfill
Web test runner commands
Adds a static `extend` method to a class, to simplify inheritance. Extends the static properties, prototype properties, and descriptors from a `Parent` constructor onto `Child` constructors.
A playwright test reporter. Shows suites/cases/steps with tree style, markdown annotations, custom columns/formatters/data collection visitors, console logs, style tags, send email.
Testing Helpers following open-wc recommendations
babel plugin to remove data-test-id attributes
[](https://circleci.com/gh/igor-dv/jest-specific-snapshot)
PM2.io NodeJS APM
🦸♂️ Superhero power for your Jest reporters! 🦸♀️
Buildkite Test Engine collectors for JavaScript test frameworks
[](https://www.npmjs.com/package/jsdoc-type-pratt-parser) []
Utilities for ESLint plugins.
Environment with unlimited test event handlers
Automatically opens your browser and iOS Simulator to preview Node.js email messages sent with Nodemailer. Made for Forward Email and Lad. Cross-browser and cross-platform email testing.
Cross-browser `CustomEvent` constructor
the complete solution for node.js command-line programs
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