function asSpyimport { asSpy } from "https://deno.land/x/frugal@0.2.1/tests/test_util/mod.ts"; asSpy<SELF = any, ARGS extends unknown[] = any[], RETURN = any>(f: (...args: ARGS) => RETURN): Spy<SELF, ARGS, RETURN>Type ParametersoptionalSELF = anyoptionalARGS extends unknown[] = any[]optionalRETURN = anyParametersf: (...args: ARGS) => RETURNReturnsSpy<SELF, ARGS, RETURN>