I am developing a website called Geocode Map Viewer(<a href="https://tools.9revolution9.com/geo/geocode/" rel="nofollow">https://tools.9revolution9.com/geo/geocode/</a>). I was looking for a suitable TypeScript library to visualize Quadkeys on the map, but unfortunately I couldn't find one. So I decided to develop my own library, using the sample code available on the Microsoft Tile Maps page as a reference.