Dr. McKay

This is a known issue. I haven't gotten around to adding proper support for showcases yet.

I don't think you can request profile data for arbitrary users without you being friends with them (or being in the same group chat) via steam-user.

I'm pinning this thread again because of numerous recent questions about changes made in v4.

The older events are deprecated, but they will keep working until at least v5. Though I recommend switching to the new events.

Do you think you could possibly add: client.on('debug', log); This will help to narrow down what's going on if it happens again.
You don't need to login through SteamCommunity if your session expires. Just call client.webLogOn() in that case.

The answer to both your questions is "who knows, it's Valve".

The names are the player_name property in each object in the array provided in the callback.

Rocket League is 252950, not 252590.

It's now possible to generate a link to allow someone to add you as a friend without you needing to accept a request. These links look like
http://s.team/p/user-id/token which redirects to https://steamcommunity.com/user/user-id/token   You can also access a profile using https://steamcommunity.com/user/user-id which will just redirect you to /id/ or /profiles/, depending on whether the profile has a custom URL set. These user IDs look like aaa-aaaa.   I don't know why it might be useful to convert a SteamID to friend-link user-id, but converting the user-id to a SteamID might be useful.   The friend-link user-ids are just the account's accountid (the lower 32 bits in the 64-bit SteamID, or the x part in [U:1:xxxx]), encoded in hexadecimal, with some character replacements, and with a dash added. Here are the replacements: Hex = Letter ------------ 0 = b 1 = c 2 = d 3 = f 4 = g 5 = h 6 = j 7 = k 8 = m 9 = n a = p b = q c = r d = t e = v f = w To convert a SteamID to a user-id, encode the accountid in hex and perform string replacements for the above characters. The hyphen isn't necessary for a final URL to work. To convert a user-id to a SteamID, remove the dash and perform string replacements for the above characters. That gives you an accountid which you can turn into a SteamID using a platform-appropriate SteamID library.

You need to research how asynchronous code works in JavaScript.

Yea sure

I had to use client.chatMessage i was using something else with which it was just sending plain text

Alright, there's primarily to parts of creating a systen like this. 
 
1. Handling chat commands / buy & sell requests from Steam chat.
2. Searching inventories for the required items and creating the trade offer.
 
Luckily for you, other users have had similar questions regarding this topic. 
 
Here's an entry regarding chat commands.
 
Here's an entry regarding looping trough the inventory and looking for item matches. 
 
I hope this helps!

Sorry, I could have been a little clearer. Not event callbacks, those are (mostly) unchanged. Callbacks to functions like getPersonas is what I'm talking about.
 
All the changes in v4 can be found here.

Try installing from npm now; you shouldn't have any issues. You might need to manually specify the version: npm install [email protected]

Great, glad you got it working. As an explanation for why you were getting loggedOn emitting, if accountName isn't specified or is undefined, then steam-user will log onto an anonymous user account.

I managed to get it working. As you suggested, there was a typo I didn't spot in the config file (module_export instead of module_exports). Many thanks for your help!

Alright, thanks anyway <3

The first argument needs to be an enum value, not a string.

Games.join("\n")

You're somehow passing a bool to two_factor_code in the logOn method.

Run npm update and it will throw properly.

e is an Error object. Calling JSON.stringify on an Error object returns {}.

I don't believe it's currently possible to embed an image into chat using steam-user. You could always upload it to imgur or something and send a link to it though.

Memory usage is pretty normal on accounts with a lot of trade offers. The module caches asset descriptions in order to avoid slamming the API and using up your quota of requests on asset description retrieval.
 
If you want to minimize memory usage, you need to omit a language in the constructor and keep track of whatever data you might need yourself.