graphql-codegen+インストール

graphsql-codegenメソッド
yarn add @graphql-codegen/cli
yarn add @graphql-codegen/typescript

codegen.yaml

package.json =>
"scripts": {
"generate": "graphql-codegen",
}

  interface IProfile {
      name: string
      age: number
      school: string
      hobby?: string
  }

  // 1.Pick 타입
  type Mytype1 = Pick<IProfile, "name" | "age">

  // 2.Omit 타입
  type Mytype2 = Omit<IProfile, "school">

  // 3.Partial 타입
  type Mytype3 = Partial<IProfile>

  // 4.Required 타입
  type Mytype4 = Required<IProfile>

  // 5.Record 타입
  type ZZZ = "aaa" | "qqq" | "rrr" // Union 타입
  // let apple: ZZZ
  // apple = "aaa"
  type Mytype5 = Record<ZZZ, IProfile>

  // ===== 추가(선언병합) =====
  interface IProfile {
      candy: number
  }
  // 같은 이름의 인터페이스가 존재하면 두개가 합쳐진다
  let profile: IProfile
  profile = {
      candy: 3,
      age: 10,
      hobby: "asdf"
  }