50 lines
1.9 KiB
JavaScript
50 lines
1.9 KiB
JavaScript
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"use strict";
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'use client';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.createMessageBus = createMessageBus;
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exports.useMessageBus = useMessageBus;
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var React = _interopRequireWildcard(require("react"));
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function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function (e) { return e ? t : r; })(e); }
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function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != typeof e && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
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function createMessageBus() {
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const listeners = new Map();
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function subscribe(topic, callback) {
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let 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 () => {
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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, ...args) {
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const topicListeners = listeners.get(topic);
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if (topicListeners) {
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topicListeners.forEach(callback => callback(...args));
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}
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}
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return {
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subscribe,
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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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function useMessageBus() {
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const 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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