function is_what.isNegativeNumberimport { is_what } from "https://deno.land/x/libpkgx@v0.19/src/deps.ts"; const { isNegativeNumber } = is_what; isNegativeNumber(payload: any): payload is numberReturns whether the payload is a negative number (but not 0) Parameterspayload: anyReturnspayload is number