Method on

index.d.ts:194–194

* Register a listener on an event

(event: 'data', callback: DataEventCallback<T>)

         * Register a listener on an event
         */
        on(event: 'data', callback: DataEventCallback<T>): this;
        on(event: 'end', callback: EndEventCallback): this;
        on(event: 'error', callback: ErrorEventCallback): this;