This project is a simple viewer for mbtiles files.
The quickest way to generate a planet.mbiles file is to use planetiler.
The demo initially centers the map in US/Colorado. You can quickly get workable data with:
wget https://github.com/onthegomap/planetiler/releases/latest/download/planetiler.jar
java -Xmx1g -jar planetiler.jar --download --area=us/colorado
And copy/link data/output.mbtiles to the tile_data directory under the name planet.mbtiles.
Put the planet.mbtiles in the tile_data directory, run npm i or pnpm i and npm run dev or pnpm dev and you should be able to open the map in your browser at the address given by the last command.
You can modify the map style file in static/mystyle.json