52. Pick と Omit

type Product = {
  id: number;
  productName: string;
  price: number;
  description: string;
};

// Pick: 必要なプロパティだけを選ぶ
type ProductSummary = Pick<Product, "id" | "productName">;
// Omit: 指定したプロパティを取り除く
type ProductInput = Omit<Product, "id">;

const summary: ProductSummary = { id: 1, productName: "コーヒー" };
const newProduct: ProductInput = {
  productName: "紅茶",
  price: 400,
  description: "セイロン産",
};

console.log(summary);
console.log(newProduct);