34 lines
866 B
TypeScript
34 lines
866 B
TypeScript
export default class EventBus {
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private static instance: EventBus;
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private listeners: Record<string, Array<(...args: any[]) => void>> = {};
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private constructor() { }
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public static getInstance(): EventBus {
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if (!EventBus.instance) {
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EventBus.instance = new EventBus();
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}
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return EventBus.instance;
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}
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public on(event: string, callback: (...args: any[]) => void): () => void {
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if (!this.listeners[event]) {
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this.listeners[event] = [];
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}
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this.listeners[event].push(callback);
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return () => {
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if (this.listeners[event]) {
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this.listeners[event] = this.listeners[event].filter(cb => cb !== callback);
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}
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};
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}
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public emit(event: string, ...args: any[]): void {
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if (this.listeners[event]) {
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this.listeners[event].forEach(callback => {
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callback(...args);
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});
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}
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}
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}
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