Full poll in getOffers() with descriptions synchronously blocking app

[jfx.]

Hey there,

I've noticed that whenever the trade offer manager does a full poll for one of my accounts it can block the Node.js process. If I turn off description mappings (not set language) it's OK.

Currently I have a requirement for descriptions, but may investigate moving away from it, however thought I'd bring this to your attention. This issue arises because the `sentOffers` data is ~67MB (as stringified). It seems to freeze up when `_mapItemsToDescriptions` is called in `createOfferFromData` for my sent items.

I tried moving to an old version where it does not paginate, but no luck, so it's likely a recent sent offer.

I think it may be the loop in `EconItem` (as the Node.js debugger kept putting me in this loop when I spammed it repeatedly), or just the main map in `_mapItemsToDescriptions` -- it takes ~60 seconds to a full refresh (like 15-30 seconds of processing) which can block the app.

I'm not exactly sure how you'd solve this unless you made it async or something. If you're interested, I can provide some `sentOffers` data.

In the meantime I may just look at moving off using descriptions. I've tried tweaking the cache values (increasing it to an extremely large number) and it doesn't seem to have any impact whatsoever.

Edited August 19, 2022 by jfx.