basemap-layers has moved to tangram.gl

The basemap renderer is now part of tangram.gl, in the @tangram.gl/basemap-layers package. The @deck.gl-community/basemap-layers package, its style-spec entry point and its examples have been removed from this repository. Existing published community releases remain available.

For new development, follow the Tangram documentation and check its installation and compatibility requirements before migrating. This is a package move, not a promise of a drop-in replacement for every community release.

SharedTile2DLayer, SharedTileset2D and SharedMVTLayer remain in @deck.gl-community/geo-layers. The renderer-neutral conformance corpus remains in dev/basemap-conformance for cross-repository consumers.