easy-event-emitter
v1.0.11
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Easy event emitter
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Easy EventEmitter
Install
npm i easy-event-emitter
Create isolated emitter
import EventEmitter from "easy-event-emitter";
const events = new EventEmitter();
Global
const events = new EventEmitter(true);
Methods
addListener(event name, callback); //return {remove()}
emit(event name, data); //return void
removeAllListeners(); //return void
Examples
Isolated
const events1 = new EventEmitter();
const events2 = new EventEmitter();
events1.addListener('test', (val) => {
console.log(val); //hello
});
const listener = events2.addListener('test', (val) => {
console.log(val); //world
});
events2.addListener('test2', (val) => {
console.log(val); //hi :-)
});
events1.emit('test', 'hello');
events2.emit('test', 'world');
events2.emit('test2', 'hi :-)');
listener.remove(); //Remove current listener
events2.removeAllListeners(); //Remove all listeners in current instance
Groups
const events1 = new EventEmitter('test_group');
const events2 = new EventEmitter('test_group');
events1.addListener('test', (val) => {
console.log(val); //"hello" replace "world"
});
events2.addListener('test', (val) => {
console.log(val); //"hello" replace "world"
});
events1.emit('test', 'hello');
events2.emit('test', 'world');
Global
const events = new EventEmitter(true);
events.addListener('test', (val) => {
console.log(val); //"hello" replace "world"
});
const listener = EventEmitter.addListener('test', (val) => {
console.log(val); //"hello" replace "world"
});
events.emit('test', 'hello');
EventEmitter.emit('test', 'world');
listener.remove(); //Remove current global listener
events.removeAllListeners(); //Remove all global listeners
//Or
EventEmitter.removeAllListeners();