feat: Add focusPolling option to disable refetching if tab is inactive

src/core/ObservableQuery.ts

@@ -589,7 +589,7 @@ once, rather than every time you call fetchMore.`);
       },
       // Avoid polling during SSR and when the query is already in flight.
       !queryManager.ssrMode && (
-        () => !isNetworkRequestInFlight(this.queryInfo.networkStatus))
+        () => !isNetworkRequestInFlight(this.queryInfo.networkStatus) && (!this.options.focusPolling || !document.hidden))
     );
   }
 

src/core/watchQueryOptions.ts

@@ -115,6 +115,10 @@ export interface WatchQueryOptions<TVariables = OperationVariables>
    * Specifies the {@link FetchPolicy} to be used after this query has completed.
    */
   nextFetchPolicy?: WatchQueryFetchPolicy;
+  /**
+   * Specifies if refetching of query should be enabled if window is focused, ie, `document.hidden: true`.
+   */
+  focusPolling?: boolean;
 }
 
 export interface FetchMoreQueryOptions<TVariables, K extends keyof TVariables> {

src/react/types/types.ts

@@ -36,6 +36,7 @@ export interface BaseQueryOptions<TVariables = OperationVariables> {
   nextFetchPolicy?: WatchQueryFetchPolicy;
   errorPolicy?: ErrorPolicy;
   pollInterval?: number;
+  focusPolling?: boolean;
   client?: ApolloClient<any>;
   notifyOnNetworkStatusChange?: boolean;
   context?: Context;