pick type

• pick type : https://www.typescriptlang.org/docs/handbook/utility-types.html#picktype-keys

interface Todo {
  title: string;
  description: string;
  completed: boolean;
}

// Todo에서 title과 completed만 추출해서 새로운 타입으로 선언함.
type TodoPreview = Pick<Todo, "title" | "completed">;

const todo: TodoPreview = {
  title: "Clean room",
  completed: false,
};