Method on

lib/api/readable.js:112–118

* @param {string|symbol} event * @param {(...args: any[]) => void} listener * @returns {this}

(event, listener)

   * @returns {this}
   */
  on (event, listener) {
    if (event === 'data' || event === 'readable') {
      this[kReading] = true
      this[kUsed] = true
    }
    return super.on(event, listener)
  }

  /**
   * @param {string|symbol} event