message: [Analytics] Default state to null in track typings definition
diff: @@ -171,7 +171,7 @@ export namespace Schema {
  *
  * ```
  */
  -export interface Track<P = any, S = any, T extends Schema.Global = Schema.Entity> extends _Track<T, P, S> {} // tslint:disable-line:no-empty-interface
  +export interface Track<P = any, S = null, T extends Schema.Global = Schema.Entity> extends _Track<T, P, S> {} // tslint:disable-line:no-empty-interface
  /**
  * A typed tracking-info alias of the default react-tracking `track` function.
  