public attempt()

in src/input/directional-debouncer.ts [40:71]

• 28 lines of code
• 7 McCabe index (conditional complexity)

  public attempt(now: number): boolean {
    const result = this.predicate();
    if (!result) {
      this.stage = DebouncerStage.IDLE;
      return false;
    }

    switch (this.stage) {
      case DebouncerStage.IDLE:
        this.stage = DebouncerStage.HELD;
        this.heldAt = now;
        return true;

      case DebouncerStage.HELD:
        if (now - this.heldAt < DirectionalDebouncer.initialDebounce) {
          return false;
        }
        this.heldAt = now;
        this.stage = DebouncerStage.FAST;
        return true;

      case DebouncerStage.FAST:
        if (now - this.heldAt < DirectionalDebouncer.fastDebounce) {
          return false;
        }
        this.heldAt = now;
        return true;

      default:
        throw new Error(`Unknown debouncer stage ${this.stage}!`);
    }
  }