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TypeScriptでPickを利用する

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はじめに

TypeScriptで基本型に対し、一部の型を取得するPickを紹介します。

ソースコード

pick.ts
type Person = {
    name: string;
    age: number;
    address: string;
  };

//   type PersonBasicInfo = Pick<Person, 'name' | 'age'>;
  type PersonBasicInfo = Pick<Person, 'name'>;

  const person: PersonBasicInfo = {
    name: 'Alice',
  };
  
  console.log(person); // { name: 'Alice' }

実行結果

実行結果
~/develop/react/typescript_node$ ts-node pick.ts
{ name: 'Alice' }
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