Type Alias DeepPartial<T>

DeepPartial: T extends (infer E)[]
? DeepPartial<E>[]
: T extends object ? { [K in keyof T]?: DeepPartial<T[K]> } : T

Recursive partial for streamed JSON: every field optional at every depth.

Arrays may be shorter than final; string values may be truncated mid-token. Provisional, render-only data — never act on it.