mroderick/PubSubJS

Health v2 · maintenance only

Adoption not part of the score

4857 stars · 459 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

PubSubJS is a dependency-free, topic-based publish/subscribe library for JavaScript. It decouples publishers from subscribers via asynchronous message delivery, with optional synchronous publication, and runs anywhere JavaScript executes.

Use cases

• decouple components in a JavaScript app with an event bus
• publish and subscribe to named topics in the browser
• implement event-driven communication in a single-process Node.js app
• replace jQuery custom events with a lightweight pub/sub library
• broadcast messages between modules without direct dependencies

When to choose

• you need a tiny (<1kb) dependency-free event bus
• you want asynchronous, loosely coupled communication within a single process
• you need compatibility with very old JavaScript environments (ES3)

When to avoid

• you need multi-process or distributed messaging (use Redis Pub/Sub or a message queue)
• you need guaranteed message delivery, persistence, or ordering
• you already use a framework with a built-in event system

Facets

library · maturity stable

middleware developer-tools web-development frontend developer-tools browser cross-platform pubsub event-bus publish-subscribe dependency-free event-driven javascript nodejs

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