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

Example

import { expect } from 'earljs'

// ...

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

Docs

• Getting started
• Step by step guide
• API reference

✨ Contributors

We welcome all kinds of contributions! Read our contributing guide.

Thanks goes to these wonderful people (emoji key):

Kris Kaczor 💻 🤔 🎨 📖 🚧	Piotr Szlachciak 💻 🤔 🎨 📖 🚧	Artur Kozak 🤔	Leonid Logvinov 📖 💻	Ivan Pantic 📖	grzpab 💻 📖	Krzysztof Jelski 🤔
Rafał Krupiński 🐛 💻

Earl logo by @sz-piotr

License

Kris Kaczor MIT