It can be useful if you didn't know syminfo.basecurrency existed.
I didn't know syminfo.basecurrency exists. Lol
Sorry if I haven't replied to your message yet, I'm a bit backlogged :)
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.