Method enable

lib/internal/perf/event_loop_delay.js:49–56

* @returns {boolean}

()

   * @returns {boolean}
   */
  enable() {
    if (this[kEnabled] === undefined)
      throw new ERR_INVALID_THIS('ELDHistogram');
    if (this[kEnabled]) return false;
    this[kEnabled] = true;
    this[kHandle].start();
    return true;
  }

  /**
   * @returns {boolean}