better-timer/dist/better-timer.js

A promise-based timer that can be paused

(() => {
  // src/modules/Timer.ts
  var Timer = class {
    constructor(duration, ...callbacks) {
      this.duration = duration;
      this.callbacks = [];
      this.isRunning = false;
      this.callbacks.push(...callbacks);
      this.startedAt = this.currentTimestamp;
      this.timeLeft = this.duration;
      this.createTimer(this.duration);
    }
    execCallbacks() {
      this.callbacks.forEach((callback) => {
        callback();
      });
    }
    get promise() {
      return new Promise((resolve) => {
        this.callbacks.push(resolve);
      });
    }
    createTimer(duration) {
      if (this.isRunning) {
        return;
      }
      this.timer = setTimeout(() => {
        this.execCallbacks();
        this.isRunning = false;
      }, duration);
      this.isRunning = true;
    }
    pause() {
      this.cancel();
      const timeElapsed = this.currentTimestamp - this.startedAt;
      const timeLeft = this.duration - timeElapsed;
      this.timeLeft = timeLeft;
    }
    resume() {
      this.createTimer(this.timeLeft);
    }
    cancel() {
      clearTimeout(this.timer);
      this.isRunning = false;
    }
    get currentTimestamp() {
      return window.performance.now();
    }
  };

  // src/bundle.ts
  window.Timer = Timer;
})();
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