Type Alias DeepPartial<T>

DeepPartial: T extends undefined
| null
| boolean
| number
| string
    ? T
    : T extends readonly unknown[]
        ? { readonly [K in keyof T]: DeepPartial<T[K]> }
        : T extends object ? { readonly [K in keyof T]?: DeepPartial<T[K]> } : T

Recursively widens a JSON-like type into a subset view.

Walks the type tree distributing over unions and dispatching on each node:

Primitives (undefined, null, boolean, number, string): returned unchanged
Tuples and arrays: each element type is recursively widened; tuple arity, element labels, variadic segments, and the array-versus-tuple distinction are preserved, with the readonly modifier applied
Plain objects and records (including string- and number-indexed signatures): every property becomes readonly and optional, with values recursively widened

Type Parameters

T
The template type to widen

Type Alias DeepPartial<T>

Type Parameters

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