Ergonomic, modern and type-safe assertion library for TypeScript

Brings good parts of Jest back to good ol' Mocha

Features

• 💪 Powerful validators and matchers
• 🤖 Type-safe - written in TypeScript and goes well with static analysis
• 🎭 Builtin support for mocks
• ☕ Works great with Mocha
• 📸 Snapshot testing
• 🔌 Extensible with plugins

Installation

npm install --save-dev earljs

Note: It's earljs not earl!

Example

import { expect } from 'earljs'

// ...

expect(response).toEqual({
  body: { trimmed: true, timestamp: expect.a(String) },
})

Docs

• Getting started
• Step by step guide
• API reference

License

Published under the MIT License. Copyright © 2023 L2BEAT.