Type alias RecursivePartial<T>

RecursivePartial<T>: {
    [P in keyof T]?: T[P] extends (infer U)[]
        ? RecursivePartial<U>[] | undefined
        : T[P] extends infer F extends AnyFunction
            ? [keyof T[P]] extends [undefined]
                ? T[P] | undefined
                : ExtractFunction<F> & RecursivePartial<Properties<T[P]>>
            : T[P] extends AnyRecord
                ? RecursivePartial<T[P]> | undefined
                : T[P] | undefined
}

Creates a recursive partial type of type T.

Type Parameters

  • T

Example

interface Foo {
  bar: number;
  baz: {
    qux: string
  }
}

type PartialFoo = RecursivePartial<Foo>
// {
//   bar?: number | undefined;
//   baz?: {
//     qux?: string | undefined
//   } | undefined
// }

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