method TradeManager.prototype.createOfferimport { TradeManager } from "https://deno.land/x/steam_trader@v0.4.0/src/trade_manager.ts"; createOffer(partner: string | SteamID, token?: string)Parameterspartner: string | SteamID Either a trade url or a string that can be parsed to a steam id optionaltoken: string The trade token. optional.