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10 Best Vanilla JavaScript Assertion Libraries

List hand-picked by Openbase Experts
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assert

assert

Node.js's require('assert') for all engines

13.2M
270
DefinitelyTyped
MIT
chai

chai

BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.

6.9M
7.8K
DefinitelyTyped
MIT
enz

enzyme

JavaScript Testing utilities for React

2.1M
DefinitelyTyped
MIT
unexpected

unexpected

Unexpected - the extensible BDD assertion toolkit

17.7K
368
No support
MIT
power-assert

power-assert

Power Assert in JavaScript. Provides descriptive assertion messages through standard assert interface. No API is the best API.

217K
2.8K
DefinitelyTyped
MIT
ej

expect.js

BDD style assertions for node and the browser.

116K
DefinitelyTyped
cd

chai-dom

DOM assertions for the Chai assertion library using vanilla JavaScript

70.2K
72
DefinitelyTyped
MIT
ci

chai-immutable

Chai assertions for Facebook's Immutable library for JavaScript collections

51.4K
160
No support
MIT
ncc

nightwatch-custom-commands-assertions

Nightwatch.js custom commands and assertions

2.1K
136
No support
MIT
zor

zora

Lightest, yet Fastest Javascript test runner for nodejs and browsers

1.1K
476
Built-in
MIT
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