emittery

Simple and modern async event emitter

v1.0.3 URL: https://unpkg.com/emittery@1.0.3/index.js

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event emitter eventemitter events async emit on once off listener subscribe unsubscribe pubsub tiny addlistener addeventlistener dispatch dispatcher observer trigger await promise typescript ts typed

eventemitter3

EventEmitter3 focuses on performance while maintaining a Node.js AND browser compatible interface.

v5.0.1 URL: https://unpkg.com/eventemitter3@5.0.1/index.js

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EventEmitter EventEmitter2 EventEmitter3 Events addEventListener addListener emit emits emitter event once pub/sub publish reactor subscribe

onetime

Ensure a function is only called once

v7.0.0 URL: https://unpkg.com/onetime@7.0.0/index.js

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once function one onetime func fn single call called prevent

process-warning

A small utility for creating warnings and emitting them.

v4.0.0 URL: https://unpkg.com/process-warning@4.0.0/index.js

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fastify error warning utility plugin emit once

once

Run a function exactly one time

v1.4.0 URL: https://unpkg.com/once@1.4.0/once.js

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once function one single