21 lines
514 B
TypeScript
21 lines
514 B
TypeScript
export abstract class EventEmitter<HandlerT> {
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private handlers: Partial<HandlerT>[] = [];
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on(handlers: Partial<HandlerT>) {
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this.handlers.push(handlers);
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}
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off(handlers: Partial<HandlerT>) {
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this.handlers = this.handlers.filter((h) => h !== handlers);
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}
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async emit(eventName: keyof HandlerT, ...args: any[]): Promise<void> {
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for (const handler of this.handlers) {
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const fn: any = handler[eventName];
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if (fn) {
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await Promise.resolve(fn(...args));
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}
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}
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}
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}
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