function is_what.isWeakMapimport { is_what } from "https://deno.land/x/libpkgx@v0.16/src/deps.ts"; const { isWeakMap } = is_what; isWeakMap(payload: any): payload is WeakMap<any, any>Returns whether the payload is a WeakMap Parameterspayload: anyReturnspayload is WeakMap<any, any>