Fake JavaScript timers

ScriptedModel, fake clock, deterministic ids and loop fixtures for offline agent testing

Test the applications @btravstack/core boots: an in-memory runtime, a fake clock, a boot fixture that stops what it started, and a tap into a running graph

Freeze Date and drive setTimeout/setInterval in tests — tiny, zero-dependency fake clock.

Fake IndexedDB: a pure JS in-memory implementation of the IndexedDB API

TypeScript definitions for @sinonjs/fake-timers

An in-memory implementation of web extension APIs for testing. Supports all test frameworks (Vitest, Jest, etc)

An analog clock for your React app.

Injects a fake HTTP request/response into a node HTTP server

Lightweight debugging utility for Node.js and the browser

Data pipeline / queue / cron test adapter for kiwa (in-memory queue + fake clock + delivery semantics)

Storybook addon that mocks the JavaScript Date — and opt-in Temporal and Intl.DateTimeFormat — for individual stories.

A fake template literal tag to trick syntax highlighters, linters and formatters into action.

Add fake test data easily to your Artillery test scripts.

A simple clock/ticker implementation to track elapsed/delta time.

Generates mock data from zod schema. Powered by @faker-js/faker and randexp.js

You want Ethereum's [merkle-patricia tree](https://github.com/wanderer/merkle-patricia-tree), but you don't care about the stateRoot. Fake it! And reap the optimization benefits.

Description goes here.

Fake W3C MediaStreamTrack implementation

Get the current time in microseconds