Method emitEvent

packages/core/xhr/index.ts:138–147

(eventName: string, ...args: Array<any>)

	}

	private emitEvent(eventName: string, ...args: Array<any>) {
		if (isFunction(this['on' + eventName])) {
			this['on' + eventName](...args);
		}

		const handlers = this._listeners.get(eventName) || [];
		handlers.forEach((handler) => {
			handler(...args);
		});
	}

	private _setReadyState(value: number) {
		if (this._readyState !== value) {