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26 lines
590 B
26 lines
590 B
export interface TransportEmitter<TListener extends (...args: never[]) => void> {
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on(listener: TListener): () => void;
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emit(...args: Parameters<TListener>): void;
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clear(): void;
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}
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export function createTransportEmitter<
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TListener extends (...args: never[]) => void
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>(): TransportEmitter<TListener> {
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const listeners = new Set<TListener>();
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return {
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on(listener) {
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listeners.add(listener);
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return () => {
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listeners.delete(listener);
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};
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},
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emit(...args) {
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for (const listener of [...listeners]) listener(...args);
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},
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clear() {
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listeners.clear();
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}
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};
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}
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