--- /dev/null
+export = EventEmitter;\r
+\r
+/**\r
+ * Constructs a new event emitter instance.\r
+ * @classdesc A minimal event emitter.\r
+ * @memberof util\r
+ * @constructor\r
+ */\r
+declare class EventEmitter {\r
+\r
+ /**\r
+ * Constructs a new event emitter instance.\r
+ * @classdesc A minimal event emitter.\r
+ * @memberof util\r
+ * @constructor\r
+ */\r
+ constructor();\r
+\r
+ /**\r
+ * Registers an event listener.\r
+ * @param {string} evt Event name\r
+ * @param {function} fn Listener\r
+ * @param {*} [ctx] Listener context\r
+ * @returns {util.EventEmitter} `this`\r
+ */\r
+ on(evt: string, fn: () => any, ctx?: any): EventEmitter;\r
+\r
+ /**\r
+ * Removes an event listener or any matching listeners if arguments are omitted.\r
+ * @param {string} [evt] Event name. Removes all listeners if omitted.\r
+ * @param {function} [fn] Listener to remove. Removes all listeners of `evt` if omitted.\r
+ * @returns {util.EventEmitter} `this`\r
+ */\r
+ off(evt?: string, fn?: () => any): EventEmitter;\r
+\r
+ /**\r
+ * Emits an event by calling its listeners with the specified arguments.\r
+ * @param {string} evt Event name\r
+ * @param {...*} args Arguments\r
+ * @returns {util.EventEmitter} `this`\r
+ */\r
+ emit(evt: string, ...args: any[]): EventEmitter;\r
+}\r