# Olical/EventEmitter

Evented JavaScript for the browser

Repository: https://github.com/Olical/EventEmitter
Canonical: https://ross.abutalabs.com/products/eventemitter
Language: JavaScript
License: Unlicense
License Family: permissive
Topics: eventemitter, javascript, events
Archived: true
Last push: 2020-05-25T13:55:22+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 5621, "days_push": 2291, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3098, forks 378 (observed 2026-08-28T04:07:43.470953+00:00)

## What it is
A lightweight, dependency-free JavaScript EventEmitter library that brings Node.js-style event-driven programming to the browser. It is a mature, stable implementation (fourth rewrite) with a descriptive API designed for easy extension into other classes.

## Use cases
- add event emitter to browser app
- pub/sub events in javascript without dependencies
- node.js style events in the browser
- lightweight event system for frontend
- extendable event class for javascript
- decouple components with events

## When to choose
- you need a tiny, zero-dependency event emitter for browser or any JS platform
- you want a stable, well-tested API that is easy to subclass
- you need public-domain (Unlicense) licensing with no restrictions

## When to avoid
- you are in Node.js and can use the built-in events module
- you need modern features like async iterators or wildcard events
- you want an actively developed library with recent releases

## Facets
- artifact type: library
- maturity: maintenance
- function: middleware, developer-tools
- domain: web-development, frontend
- platform: browser, cross-platform
- tags: eventemitter, pubsub, events, zero-dependency, browser-javascript, javascript, nodejs

## Member repositories
- Olical/EventEmitter (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:43.470953+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:27:03.907418+00:00, confidence not recorded.
  - readme: https://github.com/Olical/EventEmitter (fetched 2026-08-28T04:07:43.470953+00:00, sha e10b94aa88e0)
- Data as of 2026-08-30T08:39:29.467469+00:00.