The code looks really tidy and at times I wished we used Svelte in my day job. I can probably help out in some way. Depends on what you are looking to do? I will be back in the UK next week, travelling at the moment and don’t have my Mac with me. 

BTCMap is an important project and funnily enough I was browsing it this morning to see where I could spend Bitcoin here in Mexico. Locally back home, where I’m based in Reading, there is a pub in nearby Thales we haven’t tried for example.