<div class="progress-outer">
          <div class="progress-inner" [style.width]="progress + '%'">
            {{loadProgressTime}} s
          </div>
        </div>

var intervalo = setInterval(() => {
              if (this.loadProgress <= 100) {
                this.loadProgress -= 1.6;
              }
              if (this.loadProgress <= 0) {
                alert("se ha terminado");
                clearInterval(intervalo);
              }
            }, 1000);

var intervalo2 = setInterval(() => {
          if (this.loadProgressTime <= 100) {
            this.loadProgressTime -= 1;

          }

          if (this.loadProgressTime <= 0) {
            alert("se ha terminado");
            clearInterval(intervalo2);
          }
        }, 1000);