No, I haven't pulled the trigger to open-source it yet. But I did build on top of some of my other open source libraries: https://github.com/simontonsoftware/s-libs. So I do love open source!
I built a Sudoku app to help practice and learn advanced solving strategies. It's a progressive web app that can be used completely offline. Written in Angular with a Material UI.
Drop in on the release party live on Twitch at https://www.twitch.tv/ersimont. It's happening now until 9:30pm EST December 29th. Ask me anything here or in the live stream about how it's made, or why the world needed another Sudoku app.
Thanks! I am not paying for a plan, so the app is subject to their free quota. That line of source you found is simply going through a little proxy I set up to add my API key to the request.
No, I haven't pulled the trigger to open-source it yet. But I did build on top of some of my other open source libraries: https://github.com/simontonsoftware/s-libs. So I do love open source!