import { Storage } from "https://deno.land/x/steam_trader@v0.4.0/src/storage.ts";
For using this class you need to give proper permissions to deno.
Automatically calls JSON.stringify on your data on save and JSON.parse on load.
on windows (not sure): --allow-read=%cd%\storage --allow-write=%cd%\storage
on linux: --allow-read=$PWD/storage --allow-write=$PWD/storage