EventEmitter2/EventEmitter2
A nodejs event emitter implementation with namespaces, wildcards, TTL, works in the browser observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5574
- days_rel: n/a
- days_push: 926
- n_releases_24m: 0
Adoption not part of the score
2940 stars · 248 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
EventEmitter2 is a drop-in replacement for Node.js's EventEmitter with extended features like namespaces, wildcards, TTL listeners, and async/promise support. It works in Node.js, browsers, and web workers with strong benchmark performance.
Use cases
- implement event-driven architecture in nodejs
- use event emitters with namespaces and wildcards
- wait for events with promises
- listen to events in the browser
- replace node's built-in eventemitter with a faster one
When to choose
- you need namespaced or wildcard event handling
- you want promise-based async event listening
- you need the same emitter API in node and the browser
When to avoid
- you only need basic events and want zero dependencies
- you need a reactive stream-based event system
Facets
library · maturity stable
concurrency developer-tools web-development browser cross-platform event-emitter namespaces wildcards pubsub javascript nodejs
1 source
- readme: https://github.com/EventEmitter2/EventEmitter2 · fetched 2026-08-28 · abcd3d77bf7c
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| EventEmitter2/EventEmitter2 | main | 23 |
For agents
markdown · JSON · MCP: product_card(name="EventEmitter2/EventEmitter2")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem