Provides easy way to subscribe and emit events. Super light component
npm install --save base-events
import BaseEvents from 'base-events';
const events = new BaseEvents();
events.on('a.b.c', () => {
console.log('a.b.c fired');
});
events.once('x.y.z', () => {
console.log('x.y.z fired');
});
events.emit('a.b.c');
events.emit('x.y.z');
events.emit('x.y.z'); // will not emit x.y.z for second time
const off = events.on('a', () => {
// ....
});
off(); // unsubscribe listenerimport BaseEvents from 'base-events';
class Manager extends BaseEvents {
constructor() {
super();
}
add(component) {
// ...
this.emit('component.add', {
component
});
}
}
const manager = new Manager();
manager.on('component.add', ({ component }) => {
// ....
});-
on(event, callback)- subscribe for event. Returns unsubscribe function -
once(event, callback)- subscribe for event. Will be emitted only one time -
emit(event, arguments)- trigger event with provided arguments
You are always welcome for ideas and pull requests :)
- [ ] Event keys as patterns. If you are interested in this - please comment here https://github.com/tuchk4/base-events/issues/1
const events = new BaseEvents();
events.on('a', () => { ... });
events.on('a.*', () => { ... });
events.on('a.b.c', () => { ... });
events.on('a.*.c', () => { ... });
events.emit('a', params); // available listeners: a
events.emit('a.b.c', params); // available listeners: a.* / a.b.c / a.*.c
events.emit('a.B.c', params); // available listeners: a.*.c
events.emit('x.y.z', params); // no listeners
events.emit('a', params); // available listeners: a