add explainer for null

mapbox · Jan 9, 2019 · c646648 · c646648
1 parent 4a1c76e
commit c646648
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/source/source_state.js b/src/source/source_state.js
@@ -13,6 +13,7 @@ export type LayerFeatureStates = {[layer: string]: FeatureStates};
  * stateChanges and deletedStates batch all changes to the tile (updates and removes, respectively)
  * between coalesce() events. addFeatureState() and removeFeatureState() also update their counterpart's
  * list of changes, such that coalesce() can apply the proper state changes while agnostic to the order of operations.
+ * In deletedStates, all null's denote complete removal of state at that scope
  * @private
 */
 class SourceFeatureState {