Microkernel Core for ObjectStack
Replaces strings in a stream.
Redux-Observable epics for nteract apps
Novu <Inbox /> React SDK
Mock both 2D and WebGL contexts in Vitest.
Node.js client for StatsD, DogStatsD, and Telegraf
A full-featured HTTP proxy for Node.js.
Provides mocking support for Office-js APIs
A Minipass stream that collects all the data into a single chunk
LightClawBot channel plugin with message support, cron jobs, and proactive messaging
mock server for egg
Super simple stubs and spies with 1-step sandbox restore
Jest helper for mocking Google Cloud Firestore
Strav kernel — IoC container, service providers, lifecycle, config, events, helpers
A JS mock of the Convex backend for testing your Convex functions.
mock data generator from Swagger (OpenAPI 3)
Mock infrastructure for AI application testing — LLM APIs, image generation, image editing, text-to-speech, transcription, audio translation, audio generation, video generation, embeddings, MCP tools, A2A agents, AG-UI event streams, vector databases, sea
superagent plugin allowing to simulate HTTP calls by returning data fixtures based on the requested URL.
amplify cli plugin providing local testing
Fast HTTP benchmarking tool written in Node.js
node-unix-socket allows you to use SO_REUSEPORT, SOCK_SEQPACKET, SOCK_DGRAM in Node.js.
A simple Node.js module to check if a TCP port is already bound.
a collection of useful streams
Node stream mock module