StreetJS testing foundation: framework-agnostic test utilities — spies, a controllable fake clock, deferreds, waitFor/delay async helpers, and a scripted fetch mock. Zero runtime dependencies.

test infrastructure for a fake XMLHttpRequest object

Timing Events tied to @colyseus/clock

Exponentially Weighted Moving Average

The easiest way to generate mock data based on your Prisma models!

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

A 3D animated countdown component for React.

Skin components build off React

A fake server plugin for Vite.

React Live Clock

Hierarchical, pausable, scalable time primitive for time-driven systems

A package to seed your database using Drizzle ORM

reliable fake and temp email filter solution for site operators

GraphQL fake server for testing

Yjs encoding protocols

WASI Preview2 shim for JS environments

The current time in milliseconds, from the most precise monotonic clock available (`performance.now` → `process.hrtime` → `Date.now` → `new Date().getTime()`), for measuring elapsed time.

All the Fake Data for All Your Real Needs

GraphQL fake core library

Test Effective Fakes