Type alias DeepMapOptional<T, U>

DeepMapOptional<T, U>: {
    [P in keyof T]?: T[P] extends object
        ? DeepMap<T[P], U>
        : U
}

Utility type to deep map all object properties to a given type, but optionally.

Type Parameters

T
U

Example

type Foo = {
  a: {
    b: {
      c: string;
    };
    d: number;
  };
};

type Bar = DeepMap<Foo, number>;

// Bar = {
//   a?: {
//     b?: {
//       c?: number;
//     };
//     d?: number;
//   };
// };

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