Hey HN — this is a passion project I've had on the backburner for a short while now. I've really enjoyed building this and I'm excited to share.
vimmer.io is an interactive course for learning Vim. It's different to other online Vim courses because it uses the real Vim editor compiled to WASM (made possible by rhysd's fantastic vim.wasm project[0]). This means you get all of the functionality that you have in vanilla Vim, which not only opens a lot of doors in terms of what you can teach (buffers, windows, niche Ex commands), but also means everything you learn is completely transferable.
This has so much fun to make — looking forward to hearing all of your feedback!