import { type Spy } from "https://deno.land/x/rimbu@1.2.0/spy/index.ts";
const { FnStub } = Spy;
The allowed values to supply to a stub spy function implementation. Either a simple stub item or a sequence of stub items.
Type Parameters
F extends Func
definition: Spy.FnStubItem<F> | Spy.FnStubItem<F>[]