A typescript implementation of Rust's Result and Option objects. (Forked)

Expectations and assertions for HTTP scenarios

Wait for expectation to be true, useful for integration and end to end testing

The playwright-expect is an assertion library for TypeScript and JavaScript intended for use with a test runner such as Jest or Playwright Test.

A collection of test utilities we use to write LoopBack tests.

ESLint plugin that checks for common chai.js expect() mistakes

TypeScript definitions for jest

Stricter version of tiny-invariant

VS Code Mock for jest

Extends Chai with lint-friendly terminating assertions.

Important: this is an internal API. Expect breaking changes.

Tiny runtime assertions that preserve error messages in production.

Tooling for testing Inngest functions.

Checkly CLI

ESLint rules for Jasmine

Middleware to set the Expect-CT header

A tool for migrating frontend application from JavaScript to TypeScript

TypeScript definitions for vinyl

Write Beautiful Specs with Custom Matchers for Jest

Write assertions for TypeScript types