Custom tile layer/source factory (see
StorymapOptions.tile_source_factory). createDefault runs the
built-in map_type handling, so a factory can decorate or delegate.
May return any ol/layer/Layer (used as-is — this is what lets a
third-party layer such as an Allmaps WarpedMapLayer render), a bare
Source (wrapped in a TileLayer), or null/undefined to fall
through to the default map_type handling.
Custom tile layer/source factory (see
StorymapOptions.tile_source_factory).createDefaultruns the built-inmap_typehandling, so a factory can decorate or delegate.May return any
ol/layer/Layer(used as-is — this is what lets a third-party layer such as an AllmapsWarpedMapLayerrender), a bareSource(wrapped in aTileLayer), ornull/undefinedto fall through to the defaultmap_typehandling.