Method first

static/presentation.ts:35–39

()

    public constructor(public maxSlides: number) {}

    public first() {
        this.currentSlide = 0;
        localStorage.set(CURRENT_SLIDE_KEY, this.currentSlide.toString(10));
        this.show();
    }

    public next() {
        if (this.currentSlide < this.maxSlides - 1) {