Human-readable, fast and boilerplate-free contract programming (precondition checks) for JavaScript.
MIT License
An ever growing library of assertions for QUnit in Ember
Modular curriable utilities for modern JS
A (one day) auto-updating style at the mercy of the people, and only the people.
JSR-303 Bean Validation for javascript
Abstraction layer for cross platform JavaScript.
Validation with good Flow and TypeScript type inference
Test if two arguments have the same native class.
Powerful objects and strings validation in javascript for Node and the browser
Complete and compliant ESTree spec implementation in TypeScript
BDD style assertions for node.js -- test framework agnostic
Utility library to manipulate ASTs for ESLint projects
Test whether a value has in its prototype chain a specified constructor as a prototype property.
The bidirectional alt-JS language
ECMAScript features cheatsheet
A list of Crankshaft bailout reasons with examples