ui

app/code/node_modules/laravel-mix/src/Dispatcher.js

@@ -0,0 +1,50 @@
+/** @typedef {(...args: any) => void|Promise<void>} Handler */
+
+const { concat } = require('lodash');
+
+class Dispatcher {
+    /**
+     * Create a new Dispatcher instance.
+     */
+    constructor() {
+        /** @type {Record<string, Handler[]>} */
+        this.events = {};
+    }
+
+    /**
+     * Listen for the given event.
+     *
+     * @param {string|string[]}   events
+     * @param {Handler}       handler
+     */
+    listen(events, handler) {
+        events = concat([], events);
+
+        events.forEach(event => {
+            this.events[event] = (this.events[event] || []).concat(handler);
+        });
+
+        return this;
+    }
+
+    /**
+     * Trigger all handlers for the given event.
+     *
+     * @param {string} event
+     * @param {any} [data]
+     */
+    async fire(event, data) {
+        if (!this.events[event]) return false;
+
+        return Promise.all(this.events[event].map(handler => handler(data)));
+    }
+
+    /**
+     * Fetch all registered event listeners.
+     */
+    all() {
+        return this.events;
+    }
+}
+
+module.exports = Dispatcher;