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Partial, Pick, Omit & Required Types

barisx answered on June 13, 2023 Popularity 1/10 Helpfulness 1/10

answer Partial, Pick, Omit & Required Types

Partial, Pick, Omit & Required Types

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interface User {
  name: string;
  age?: number;
  email: string;
}

type PartialUser = Partial<User>;
type PickUser = Pick<User, "name" | "age">;
type OmitUser = Omit<User, "age">;
type RequiredUser = Required<User>;

// PartialUser is equivalent to:
// interface PartialUser {
//   name?: string;
//   age?: number;
//   email?: string;
// }

// PickUser is equivalent to:
// interface PickUser {
//   name: string;
//   age?: number;
// }

// OmitUser is equivalent to:
// interface OmitUser {
//   name: string;
//   email: string;
// }

// RequiredUser is equivalent to:
// interface RequiredUser {
//   name: string;
//   age: number;
//   email: string;
// }

Often while working with server & local data, you need to make some properties optional or required.

Instead of defining hundreds of interfaces with slightly altered versions of the same data. You can do that using Partial, Pick, Omit & Required types.

Popularity 1/10 Helpfulness 1/10 Language typescript

Source: tapajyoti-bose.medium.com

Tags: required types typescript

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