remity

remity is a slim EventEmitter implementation.

Install

npm install --save remity

Usage

import { EventEmitter } from 'remity'
const event = new EventEmitter()
event.addListener("eventname", callback);        // subscribe a event
event.emit("eventname", {
    a: 'some args'
});  // trigger a event

Documentation

EventEmitter class

EventEmitter#addListener(name, handler)

Register a listener for certain specified event, when event trigged them will be called orderly.

EventEmitter#addListeners(events)

Register multiple events at once. the events is an array of structure like below:

{
    name: string;           // event name
    handler: args=>any;     // it will be called when event is triggered
    once?: boolean;         // same as `EventEmitter#once`, default false
}

EventEmitter#prependListener(name, handler)

Register a listener that will be prepended to listeners list head instead of tail for certain specified event, when event trigged them will be called orderly.

EventEmitter#prependOnceListener(name, handler)

EventEmitter#off(name, handler?)

Alias of EventEmitter#removeListener

EventEmitter#on(name, handler)

Alias of EventEmitter#addListener

EventEmitter#once(name, handler)

Register a listener for certain specified event, but just only effects one time.

EventEmitter#removeListener(name, handler?)

Remove specified listener for the specified event, but will remove all listeners of name event when handler is not set.

EventEmitter#removeAllListeners()

Remove all registered events and its listeners.

EventEmitter#hasListener(name, handler?)

EventEmitter#listenerCount(name)

Get count of listeners of specified event.

EventEmitter#emit(name, args)

Emit a event with optional arguments.

EventEmitter#trigger(name, args)

alias of EventEmitter#emit.

License

MIT.