/**
 * Object for keeping track of time.
 *
 * @see <a href="https://github.com/mrdoob/three.js/blob/master/src/core/Clock.js">src/core/Clock.js</a>
 */
export class Clock {
  /**
   * @param autoStart Automatically start the clock.
   */
  constructor(autoStart?: boolean);

  /**
   * If set, starts the clock automatically when the first update is called.
   */
  autoStart: boolean;

  /**
   * When the clock is running, It holds the starttime of the clock.
   * This counted from the number of milliseconds elapsed since 1 January 1970 00:00:00 UTC.
   */
  startTime: number;

  /**
   * When the clock is running, It holds the previous time from a update.
   * This counted from the number of milliseconds elapsed since 1 January 1970 00:00:00 UTC.
   */
  oldTime: number;

  /**
   * When the clock is running, It holds the time elapsed between the start of the clock to the previous update.
   * This parameter is in seconds of three decimal places.
   */
  elapsedTime: number;

  /**
   * This property keeps track whether the clock is running or not.
   */
  running: boolean;

  /**
   * Starts clock.
   */
  start(): void;

  /**
   * Stops clock.
   */
  stop(): void;

  /**
   * Get the seconds passed since the clock started.
   */
  getElapsedTime(): number;

  /**
   * Get the seconds passed since the last call to this method.
   */
  getDelta(): number;
}