47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
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'use client';
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import * as React from 'react';
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export function createMessageBus() {
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var listeners = new Map();
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function subscribe(topic, callback) {
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var topicListeners = listeners.get(topic);
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if (!topicListeners) {
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topicListeners = new Set([callback]);
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listeners.set(topic, topicListeners);
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} else {
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topicListeners.add(callback);
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}
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return function () {
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topicListeners.delete(callback);
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if (topicListeners.size === 0) {
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listeners.delete(topic);
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}
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};
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}
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function publish(topic) {
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for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
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args[_key - 1] = arguments[_key];
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}
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var topicListeners = listeners.get(topic);
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if (topicListeners) {
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topicListeners.forEach(function (callback) {
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return callback.apply(void 0, args);
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});
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}
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}
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return {
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subscribe: subscribe,
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publish: publish
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};
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}
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/**
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* @ignore - internal hook.
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*/
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export function useMessageBus() {
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var bus = React.useRef();
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if (!bus.current) {
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bus.current = createMessageBus();
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}
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return bus.current;
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}
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