For AI agents: a documentation index is available at /llms.txt. Markdown versions of all pages
are available by appending .md to any URL.
Type Alias TileList
TileList: { [key: string]: true }
Type Declaration
[key: string]: true
Key-value list of tile. The IDs are of the form
"z/x/y"and the value is true. See it as a Set.TODO: Why not using Set?