typescript Partial

자주 쓰는 타입 유틸 ; Partial, Pick, Omit, Record

Partial

• Partial을 사용해서 각 필드를 옵셔널로 만들 수 있다

example.ts

type Todo = {
  title: string;
  description: string;
};

const updateTodo = (todo: Todo, fieldsToUpdats: Partial<Todo>) => {
  return { ...todo, ...fieldsToUpdats };
};

const todo1: Todo = {
  title: 'be super',
  description: 'power overwhelming',
};

const todo2 = updateTodo(todo1, { description: 'show me the money' });

console.log(todo2);

Pick

Pick.ts

type Todo = {
  title: string;
  description: string;
  time: string;
};

type Todo2 = Pick<Todo, 'title' | 'time'>;

참고

• https://www.typescriptlang.org/docs/handbook/utility-types.html