64302dc191
--------- Co-authored-by: DavidMaliglowka <13022280+DavidMaliglowka@users.noreply.github.com> Co-authored-by: Ralph Khreish <35776126+Crunchyman-ralph@users.noreply.github.com> Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>
35 lines
824 B
TypeScript
35 lines
824 B
TypeScript
/**
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* Simple Event Emitter
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* Lightweight alternative to complex event bus
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*/
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export type EventHandler = (...args: any[]) => void | Promise<void>;
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export class EventEmitter {
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private handlers = new Map<string, Set<EventHandler>>();
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on(event: string, handler: EventHandler): () => void {
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if (!this.handlers.has(event)) {
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this.handlers.set(event, new Set());
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}
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this.handlers.get(event)?.add(handler);
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// Return unsubscribe function
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return () => this.off(event, handler);
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}
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off(event: string, handler: EventHandler): void {
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this.handlers.get(event)?.delete(handler);
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}
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emit(event: string, ...args: any[]): void {
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this.handlers.get(event)?.forEach((handler) => {
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try {
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handler(...args);
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} catch (error) {
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console.error(`Error in event handler for ${event}:`, error);
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}
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});
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}
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}
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