Dead simple Object schema validation

A collection of assertions for test and production code alike.

An assertion library for use with CDK Apps

Minimal web-style fetch TypeScript typings

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

A ridiculously light-weight argument validator (now browser friendly)

Assertions and Validations for TypeScript

Check TypeScript type definitions

Pass two numbers, get a regex-compatible source string for matching ranges. Validated against more than 2.78 million test assertions.

A library for finite automata and regular expressions in the context of JS RegExp

A microlibrary that generates prop and type assertions in Tape for Sequelize models

Tooling for testing Inngest functions.

Better assertions for node, reporting the expr, filename, lineno etc

A library to find JS RegExp with super-linear worst-case time complexity for attack strings that repeat a single character.

TypeScript functions for type assertions and type casting

Attest is a testing library that makes your TypeScript types available at runtime, giving you access to precise type-level assertions and performance benchmarks.

Transform the Import Attributes proposal (`import ... from '...' with { ... }`) to the previous version known as Import Assertions (`import ... from '...' assert { ... }`).

date / time comparison matchers for chai

No description provided.

Testing Matchers for Enzyme