enable by default recreating loadMore optimization

Reviewed By: tyao1

Differential Revision: D69861341

fbshipit-source-id: 1f55c614a0fc97f576d5a39b88983db6b1d89694

Author: Tom910

packages/react-relay/relay-hooks/useLoadMoreFunction.js

@@ -169,12 +169,7 @@ hook useLoadMoreFunction_CURRENT<TVariables: Variables>(
 
       const fragmentSelector = getSelector(fragmentNode, fragmentRef);
 
-      const isRequestInvalidCheck =
-        RelayFeatureFlags.OPTIMIZE_RECREATING_LOAD_MORE_FUNCTION
-          ? isRequestInvalid
-          : fragmentData == null || isParentQueryActive;
-
-      if (isFetchingRef.current === true || isRequestInvalidCheck) {
+      if (isFetchingRef.current === true || isRequestInvalid) {
         if (fragmentSelector == null) {
           warning(
             false,
@@ -276,9 +271,6 @@ hook useLoadMoreFunction_CURRENT<TVariables: Variables>(
       completeFetch,
       isFetchingRef,
       isRequestInvalid,
-      ...(RelayFeatureFlags.OPTIMIZE_RECREATING_LOAD_MORE_FUNCTION
-        ? [isRequestInvalid]
-        : [isParentQueryActive, fragmentData]),
       fragmentNode.name,
       fragmentRef,
       componentDisplayName,

packages/react-relay/relay-hooks/useLoadMoreFunction_EXPERIMENTAL.js

@@ -31,7 +31,6 @@ const invariant = require('invariant');
 const {useCallback, useRef, useState} = require('react');
 const {
   __internal: {fetchQuery},
-  RelayFeatureFlags,
   createOperationDescriptor,
   getPaginationVariables,
   getRefetchMetadata,
@@ -168,12 +167,7 @@ hook useLoadMoreFunction_EXPERIMENTAL<TVariables: Variables>(
 
       const fragmentSelector = getSelector(fragmentNode, fragmentRef);
 
-      const isRequestInvalidCheck =
-        RelayFeatureFlags.OPTIMIZE_RECREATING_LOAD_MORE_FUNCTION
-          ? isRequestInvalid
-          : fragmentData == null || isParentQueryActive;
-
-      if (fetchStatusRef.current.kind === 'fetching' || isRequestInvalidCheck) {
+      if (fetchStatusRef.current.kind === 'fetching' || isRequestInvalid) {
         if (fragmentSelector == null) {
           warning(
             false,
@@ -272,9 +266,7 @@ hook useLoadMoreFunction_EXPERIMENTAL<TVariables: Variables>(
       identifierValue,
       direction,
       cursor,
-      ...(RelayFeatureFlags.OPTIMIZE_RECREATING_LOAD_MORE_FUNCTION
-        ? [isRequestInvalid]
-        : [isParentQueryActive, fragmentData]),
+      isRequestInvalid,
       fragmentNode.name,
       fragmentRef,
       componentDisplayName,

packages/relay-runtime/util/RelayFeatureFlags.js

@@ -55,10 +55,6 @@ export type FeatureFlags = {
   // Temporary flag to experiment to enable compatibility with React's unstable <Activity> API
   ENABLE_ACTIVITY_COMPATIBILITY: boolean,
 
-  // Enables optimization for recreating the load more function.
-  // When enabled, this flag reduce and simplify amount of dependencies for the function loadMore
-  OPTIMIZE_RECREATING_LOAD_MORE_FUNCTION: boolean,
-
   // Adds a prefix to the storage key of read time resolvers. This is used to
   // disambiguate the same resolver being used at both read time and exec time.
   ENABLE_READ_TIME_RESOLVER_STORAGE_KEY_PREFIX: boolean,
@@ -90,7 +86,6 @@ const RelayFeatureFlags: FeatureFlags = {
   ENABLE_RELAY_OPERATION_TRACKER_SUSPENSE: false,
   PROCESS_OPTIMISTIC_UPDATE_BEFORE_SUBSCRIPTION: false,
   MARK_RESOLVER_VALUES_AS_CLEAN_AFTER_FRAGMENT_REREAD: false,
-  OPTIMIZE_RECREATING_LOAD_MORE_FUNCTION: false,
   ENABLE_CYLE_DETECTION_IN_VARIABLES: false,
   ENABLE_ACTIVITY_COMPATIBILITY: false,
   ENABLE_READ_TIME_RESOLVER_STORAGE_KEY_PREFIX: true,