Type Alias DeepPartial<T>

DeepPartial: {
    [P in keyof T]?: T[P] extends (infer U)[]
        ? DeepPartial<U>[]
        : T[P] extends ReadonlyArray<infer U>
            ? ReadonlyArray<DeepPartial<U>>
            : T[P] extends object ? DeepPartial<T[P]> : T[P]
}

Recursively make all properties optional.

Type Parameters

T extends PlainObject
Object type to transform

Remarks

Traverses objects and arrays and applies optional modifiers at every nesting level without altering value types.

Example

type User = { id: number; profile: { name: string; address: { city: string } } };
type PartialUser = DeepPartial< User >;
// { id?: number; profile?: { name?: string; address?: { city?: string } } }

Type Alias DeepPartial<T>

Type Parameters

Remarks

Example

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