21 lines
466 B
TypeScript
21 lines
466 B
TypeScript
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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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emit(eventName: keyof HandlerT, ...args: any[]) {
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for (let handler of this.handlers) {
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let fn: any = handler[eventName];
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if (fn) {
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fn(...args);
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}
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}
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}
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}
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