The Firebase Authenticaton component of the Firebase JS SDK.

An email address parser based on rfc5322

Email parser for Node.js and browser environments

Schemas describing various structures used by nyc and istanbuljs

Simple and complete custom Cypress commands and utilities that encourage good testing practices.

Advanced email validation with MX records, SMTP verification, disposable email detection, batch processing, and caching. Production-ready with TypeScript support.

Parse an author, contributor, maintainer or other 'person' string into an object with name, email and url properties following npm conventions.

Provides a fast, pretty robust e-mail validator. Only checks form, not function.

Inboxical Playwright helper — Email testing fixtures for Playwright

Encode/decode base64 data into ArrayBuffers

mjml-body

The json schema for a mutation testing report.

Twilio SendGrid NodeJS internal helpers

Simple and complete Svelte testing utilities that encourage good testing practices.

Temporal.io SDK Testing sub-package

Get a GitHub username from an email address

A live preview of your emails right in your browser.

SuperAgent driven library for testing HTTP servers

JWA implementation (supports all JWS algorithms)

Utility functions to calculate mutation testing metrics.