Has All Icons

const Menu = [
  {
    name: "File",
    icon: "file-icon",
    subMenus: [
      {
        name: "New",
        icon: "new-icon",
      },
      {
        name: "Open",
        icon: "open-icon",
      },
      {
        name: "Edit",
        icon: "edit-icon",
      },
      {
        name: "Download",
        icon: "download-icon",
        subMenus: [
          {
            name: "Word",
            icon: "word-icon",
          },
          {
            name: "PDF",
            icon: "word-icon",
          },
        ],
      },
    ],
  },
  {
    name: "Insert",
    icon: "insert-icon",
    subMenus: [
      {
        name: "Image",
        icon: "image-icon",
        subMenus: [
          {
            name: "Upload",
            icon: "upload-icon",
          },
          {
            name: "Drive",
            icon: "disk-icon",
          },
        ],
      },
    ],
  },
];

function hasAllIcons(Menu) {
  if (Menu === null || Menu.length === 0) return true;
  for (let menu of Menu) {
    if (!menu.icon) return false;
    if (menu.subMenus && !hasAllIcons(menu.subMenus)) return false;
  }
  return true;
}

console.log(hasAllIcons(Menu)); // true