mirror of https://github.com/msgbyte/tailchat
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
31 lines
578 B
TypeScript
31 lines
578 B
TypeScript
4 years ago
|
/**
|
||
|
|
* 独立事件分发工具类
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* const event = new EventBus();
|
||
|
|
* event.on(() => {
|
||
|
|
* console.log('trigger')
|
||
|
|
* })
|
||
|
|
* event.fire();
|
||
|
|
*/
|
||
|
|
export class EventBus<Args extends unknown[] = []> {
|
||
|
|
listeners: ((...args: Args) => void)[] = [];
|
||
|
|
|
||
|
|
fire(...args: Args) {
|
||
|
|
this.listeners.forEach((fn) => {
|
||
|
|
fn(...args);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
on(fn: (...args: Args) => void) {
|
||
|
|
this.listeners.push(fn);
|
||
|
|
}
|
||
|
|
|
||
|
|
off(fn: (...args: Args) => void) {
|
||
|
|
const index = this.listeners.indexOf(fn);
|
||
|
|
if (index >= 0) {
|
||
|
|
this.listeners.splice(index, 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|