Function isDoc

packages/printer/src/internal/doc.ts:115–115

(u: unknown)

/** @internal */
export const isDoc = (u: unknown): u is Doc.Doc<unknown> => typeof u === "object" && u != null && DocTypeId in u

/** @internal */
export const isFail = <A>(self: Doc.Doc<A>): self is Doc.Fail<A> => self._tag === "Fail"