switchTheme()

in app/src/app/app.component.ts [85:92]


  switchTheme(theme: string) {
    if (theme === "Dark") {
      this.renderer.removeClass(document.body, "theme-light");
    } else {
      this.renderer.addClass(document.body, "theme-light");
    }
    localStorage.setItem("theme", theme);
  }