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@botanic7arc(m t)

props宣言とtypeの型定義を使わずに関数コンポーネントの引数の型を指定する(TypeScript)

Last updated at Posted at 2021-07-14

構文

({変数名}:{変数名:型})=>{}

例

const App = ({ message }: { message: string }) => <div>{message}</div>;

利点

  • props宣言とtypeの型定義を使う必要がない

欠点

  • 変数名を2回タイプする必要がある

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