perf: improve chat switch performance

src/components/FlatList/index.android.tsx

@@ -1,7 +1,7 @@
 import {useFocusEffect} from '@react-navigation/native';
 import type {ForwardedRef} from 'react';
 import React, {forwardRef, useCallback, useContext} from 'react';
-import type {FlatListProps} from 'react-native';
+import type {FlatListProps, NativeScrollEvent, NativeSyntheticEvent} from 'react-native';
 import {FlatList} from 'react-native';
 import {ActionListContext} from '@pages/home/ReportScreenContext';
 
@@ -22,6 +22,9 @@ function CustomFlatList<T>(props: FlatListProps<T>, ref: ForwardedRef<FlatList>)
         }
     }, [scrollPosition?.offset, ref]);
 
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    const onMomentumScrollEnd = useCallback((event: NativeSyntheticEvent<NativeScrollEvent>) => setScrollPosition({offset: event.nativeEvent.contentOffset.y}), []);
+
     useFocusEffect(
         useCallback(() => {
             onScreenFocus();
@@ -32,10 +35,8 @@ function CustomFlatList<T>(props: FlatListProps<T>, ref: ForwardedRef<FlatList>)
         <FlatList<T>
             // eslint-disable-next-line react/jsx-props-no-spreading
             {...props}
-            onScroll={(event) => props.onScroll?.(event)}
-            onMomentumScrollEnd={(event) => {
-                setScrollPosition({offset: event.nativeEvent.contentOffset.y});
-            }}
+            onScroll={props.onScroll}
+            onMomentumScrollEnd={onMomentumScrollEnd}
             ref={ref}
         />
     );

src/components/HeaderWithBackButton/types.ts

@@ -1,9 +1,9 @@
 import type {ReactNode} from 'react';
-import type {OnyxCollection, OnyxEntry} from 'react-native-onyx';
+import type {OnyxEntry} from 'react-native-onyx';
 import type {Action} from '@hooks/useSingleExecution';
 import type {StepCounterParams} from '@src/languages/types';
 import type {AnchorPosition} from '@src/styles';
-import type {PersonalDetails, Policy, Report} from '@src/types/onyx';
+import type {Policy, Report} from '@src/types/onyx';
 import type ChildrenProps from '@src/types/utils/ChildrenProps';
 import type IconAsset from '@src/types/utils/IconAsset';
 
@@ -101,9 +101,6 @@ type HeaderWithBackButtonProps = Partial<ChildrenProps> & {
     /** The report's policy, if we're showing the details for a report and need info about it for AvatarWithDisplay */
     policy?: OnyxEntry<Policy>;
 
-    /** Policies, if we're showing the details for a report and need participant details for AvatarWithDisplay */
-    personalDetails?: OnyxCollection<PersonalDetails>;
-
     /** Single execution function to prevent concurrent navigation actions */
     singleExecution?: <T extends unknown[]>(action: Action<T>) => Action<T>;
 

src/components/InvertedFlatList/BaseInvertedFlatList.tsx

@@ -6,17 +6,19 @@ import FlatList from '@components/FlatList';
 const WINDOW_SIZE = 15;
 const AUTOSCROLL_TO_TOP_THRESHOLD = 128;
 
+const maintainVisibleContentPosition = {
+    minIndexForVisible: 0,
+    autoscrollToTopThreshold: AUTOSCROLL_TO_TOP_THRESHOLD,
+};
+
 function BaseInvertedFlatList<T>(props: FlatListProps<T>, ref: ForwardedRef<FlatList>) {
     return (
         <FlatList
             // eslint-disable-next-line react/jsx-props-no-spreading
             {...props}
             ref={ref}
             windowSize={WINDOW_SIZE}
-            maintainVisibleContentPosition={{
-                minIndexForVisible: 0,
-                autoscrollToTopThreshold: AUTOSCROLL_TO_TOP_THRESHOLD,
-            }}
+            maintainVisibleContentPosition={maintainVisibleContentPosition}
             inverted
         />
     );

src/components/LHNOptionsList/LHNOptionsList.tsx

@@ -1,9 +1,8 @@
 import {FlashList} from '@shopify/flash-list';
 import type {ReactElement} from 'react';
-import React, {memo, useCallback} from 'react';
+import React, {memo, useCallback, useMemo} from 'react';
 import {StyleSheet, View} from 'react-native';
 import {withOnyx} from 'react-native-onyx';
-import withCurrentReportID from '@components/withCurrentReportID';
 import usePermissions from '@hooks/usePermissions';
 import useThemeStyles from '@hooks/useThemeStyles';
 import * as ReportActionsUtils from '@libs/ReportActionsUtils';
@@ -28,7 +27,6 @@ function LHNOptionsList({
     preferredLocale = CONST.LOCALES.DEFAULT,
     personalDetails = {},
     transactions = {},
-    currentReportID = '',
     draftComments = {},
     transactionViolations = {},
     onFirstItemRendered = () => {},
@@ -86,7 +84,7 @@ function LHNOptionsList({
                     lastReportActionTransaction={lastReportActionTransaction}
                     receiptTransactions={transactions}
                     viewMode={optionMode}
-                    isFocused={!shouldDisableFocusOptions && reportID === currentReportID}
+                    isFocused={!shouldDisableFocusOptions}
                     onSelectRow={onSelectRow}
                     preferredLocale={preferredLocale}
                     comment={itemComment}
@@ -98,7 +96,6 @@ function LHNOptionsList({
             );
         },
         [
-            currentReportID,
             draftComments,
             onSelectRow,
             optionMode,
@@ -116,6 +113,8 @@ function LHNOptionsList({
         ],
     );
 
+    const extraData = useMemo(() => [reportActions, reports, policy, personalDetails], [reportActions, reports, policy, personalDetails]);
+
     return (
         <View style={style ?? styles.flex1}>
             <FlashList
@@ -127,7 +126,7 @@ function LHNOptionsList({
                 keyExtractor={keyExtractor}
                 renderItem={renderItem}
                 estimatedItemSize={optionMode === CONST.OPTION_MODE.COMPACT ? variables.optionRowHeightCompact : variables.optionRowHeight}
-                extraData={[currentReportID]}
+                extraData={extraData}
                 showsVerticalScrollIndicator={false}
             />
         </View>
@@ -136,33 +135,31 @@ function LHNOptionsList({
 
 LHNOptionsList.displayName = 'LHNOptionsList';
 
-export default withCurrentReportID(
-    withOnyx<LHNOptionsListProps, LHNOptionsListOnyxProps>({
-        reports: {
-            key: ONYXKEYS.COLLECTION.REPORT,
-        },
-        reportActions: {
-            key: ONYXKEYS.COLLECTION.REPORT_ACTIONS,
-        },
-        policy: {
-            key: ONYXKEYS.COLLECTION.POLICY,
-        },
-        preferredLocale: {
-            key: ONYXKEYS.NVP_PREFERRED_LOCALE,
-        },
-        personalDetails: {
-            key: ONYXKEYS.PERSONAL_DETAILS_LIST,
-        },
-        transactions: {
-            key: ONYXKEYS.COLLECTION.TRANSACTION,
-        },
-        draftComments: {
-            key: ONYXKEYS.COLLECTION.REPORT_DRAFT_COMMENT,
-        },
-        transactionViolations: {
-            key: ONYXKEYS.COLLECTION.TRANSACTION_VIOLATIONS,
-        },
-    })(memo(LHNOptionsList)),
-);
+export default withOnyx<LHNOptionsListProps, LHNOptionsListOnyxProps>({
+    reports: {
+        key: ONYXKEYS.COLLECTION.REPORT,
+    },
+    reportActions: {
+        key: ONYXKEYS.COLLECTION.REPORT_ACTIONS,
+    },
+    policy: {
+        key: ONYXKEYS.COLLECTION.POLICY,
+    },
+    preferredLocale: {
+        key: ONYXKEYS.NVP_PREFERRED_LOCALE,
+    },
+    personalDetails: {
+        key: ONYXKEYS.PERSONAL_DETAILS_LIST,
+    },
+    transactions: {
+        key: ONYXKEYS.COLLECTION.TRANSACTION,
+    },
+    draftComments: {
+        key: ONYXKEYS.COLLECTION.REPORT_DRAFT_COMMENT,
+    },
+    transactionViolations: {
+        key: ONYXKEYS.COLLECTION.TRANSACTION_VIOLATIONS,
+    },
+})(memo(LHNOptionsList));
 
 export type {LHNOptionsListProps};

src/components/LHNOptionsList/OptionRowLHNData.tsx

@@ -1,5 +1,6 @@
 import {deepEqual} from 'fast-equals';
 import React, {useEffect, useMemo, useRef} from 'react';
+import useCurrentReportID from '@hooks/useCurrentReportID';
 import * as ReportUtils from '@libs/ReportUtils';
 import SidebarUtils from '@libs/SidebarUtils';
 import * as Report from '@userActions/Report';
@@ -32,6 +33,8 @@ function OptionRowLHNData({
     ...propsToForward
 }: OptionRowLHNDataProps) {
     const reportID = propsToForward.reportID;
+    const currentReportIDValue = useCurrentReportID();
+    const isReportFocused = isFocused && currentReportIDValue?.currentReportID === reportID;
 
     const optionItemRef = useRef<OptionData>();
 
@@ -85,7 +88,7 @@ function OptionRowLHNData({
         <OptionRowLHN
             // eslint-disable-next-line react/jsx-props-no-spreading
             {...propsToForward}
-            isFocused={isFocused}
+            isFocused={isReportFocused}
             optionItem={optionItem}
         />
     );

src/components/LHNOptionsList/types.ts

@@ -3,7 +3,6 @@ import type {RefObject} from 'react';
 import type {LayoutChangeEvent, StyleProp, TextStyle, View, ViewStyle} from 'react-native';
 import type {OnyxCollection, OnyxEntry} from 'react-native-onyx';
 import type {ValueOf} from 'type-fest';
-import type {CurrentReportIDContextValue} from '@components/withCurrentReportID';
 import type CONST from '@src/CONST';
 import type {OptionData} from '@src/libs/ReportUtils';
 import type {Locale, PersonalDetailsList, Policy, Report, ReportAction, ReportActions, Transaction, TransactionViolation} from '@src/types/onyx';
@@ -64,7 +63,7 @@ type CustomLHNOptionsListProps = {
     reportIDsWithErrors: Record<string, OnyxCommon.Errors>;
 };
 
-type LHNOptionsListProps = CustomLHNOptionsListProps & CurrentReportIDContextValue & LHNOptionsListOnyxProps;
+type LHNOptionsListProps = CustomLHNOptionsListProps & LHNOptionsListOnyxProps;
 
 type OptionRowLHNDataProps = {
     /** Whether row should be focused */

src/components/MoneyReportHeader.tsx

@@ -21,7 +21,6 @@ import ConfirmModal from './ConfirmModal';
 import HeaderWithBackButton from './HeaderWithBackButton';
 import * as Expensicons from './Icon/Expensicons';
 import MoneyReportHeaderStatusBar from './MoneyReportHeaderStatusBar';
-import {usePersonalDetails} from './OnyxProvider';
 import SettlementButton from './SettlementButton';
 
 type PaymentType = DeepValueOf<typeof CONST.IOU.PAYMENT_TYPE>;
@@ -46,7 +45,6 @@ type MoneyReportHeaderProps = MoneyReportHeaderOnyxProps & {
 };
 
 function MoneyReportHeader({session, policy, chatReport, nextStep, report: moneyRequestReport}: MoneyReportHeaderProps) {
-    const personalDetails = usePersonalDetails() || CONST.EMPTY_OBJECT;
     const styles = useThemeStyles();
     const {translate} = useLocalize();
     const {windowWidth, isSmallScreenWidth} = useWindowDimensions();
@@ -117,7 +115,6 @@ function MoneyReportHeader({session, policy, chatReport, nextStep, report: money
                 shouldShowPinButton={false}
                 report={moneyRequestReport}
                 policy={policy}
-                personalDetails={personalDetails}
                 shouldShowBackButton={isSmallScreenWidth}
                 onBackButtonPress={() => Navigation.goBack(undefined, false, true)}
                 // Shows border if no buttons or next steps are showing below the header

src/components/MoneyRequestHeader.tsx

@@ -22,7 +22,6 @@ import HeaderWithBackButton from './HeaderWithBackButton';
 import HoldBanner from './HoldBanner';
 import * as Expensicons from './Icon/Expensicons';
 import MoneyRequestHeaderStatusBar from './MoneyRequestHeaderStatusBar';
-import {usePersonalDetails} from './OnyxProvider';
 import ProcessMoneyRequestHoldMenu from './ProcessMoneyRequestHoldMenu';
 
 type MoneyRequestHeaderOnyxProps = {
@@ -55,7 +54,6 @@ type MoneyRequestHeaderProps = MoneyRequestHeaderOnyxProps & {
 };
 
 function MoneyRequestHeader({session, parentReport, report, parentReportAction, transaction, shownHoldUseExplanation = false, policy}: MoneyRequestHeaderProps) {
-    const personalDetails = usePersonalDetails() || CONST.EMPTY_OBJECT;
     const styles = useThemeStyles();
     const {translate} = useLocalize();
     const [isDeleteModalVisible, setIsDeleteModalVisible] = useState(false);
@@ -173,7 +171,6 @@ function MoneyRequestHeader({session, parentReport, report, parentReportAction,
                         ownerAccountID: parentReport?.ownerAccountID,
                     }}
                     policy={policy}
-                    personalDetails={personalDetails}
                     shouldShowBackButton={isSmallScreenWidth}
                     onBackButtonPress={() => Navigation.goBack(undefined, false, true)}
                 />

src/libs/Pusher/pusher.ts

@@ -1,5 +1,6 @@
 import isObject from 'lodash/isObject';
 import type {Channel, ChannelAuthorizerGenerator, Options} from 'pusher-js/with-encryption';
+import {InteractionManager} from 'react-native';
 import Onyx from 'react-native-onyx';
 import type {LiteralUnion, ValueOf} from 'type-fest';
 import Log from '@libs/Log';
@@ -228,48 +229,50 @@ function subscribe<EventName extends PusherEventName>(
     onResubscribe = () => {},
 ): Promise<void> {
     return new Promise((resolve, reject) => {
-        // We cannot call subscribe() before init(). Prevent any attempt to do this on dev.
-        if (!socket) {
-            throw new Error(`[Pusher] instance not found. Pusher.subscribe()
+        InteractionManager.runAfterInteractions(() => {
+            // We cannot call subscribe() before init(). Prevent any attempt to do this on dev.
+            if (!socket) {
+                throw new Error(`[Pusher] instance not found. Pusher.subscribe()
             most likely has been called before Pusher.init()`);
-        }
+            }
 
-        Log.info('[Pusher] Attempting to subscribe to channel', false, {channelName, eventName});
-        let channel = getChannel(channelName);
-
-        if (!channel || !channel.subscribed) {
-            channel = socket.subscribe(channelName);
-            let isBound = false;
-            channel.bind('pusher:subscription_succeeded', () => {
-                // Check so that we do not bind another event with each reconnect attempt
-                if (!isBound) {
-                    bindEventToChannel(channel, eventName, eventCallback);
-                    resolve();
-                    isBound = true;
-                    return;
-                }
-
-                // When subscribing for the first time we register a success callback that can be
-                // called multiple times when the subscription succeeds again in the future
-                // e.g. as a result of Pusher disconnecting and reconnecting. This callback does
-                // not fire on the first subscription_succeeded event.
-                onResubscribe();
-            });
-
-            channel.bind('pusher:subscription_error', (data: PusherSubscribtionErrorData = {}) => {
-                const {type, error, status} = data;
-                Log.hmmm('[Pusher] Issue authenticating with Pusher during subscribe attempt.', {
-                    channelName,
-                    status,
-                    type,
-                    error,
+            Log.info('[Pusher] Attempting to subscribe to channel', false, {channelName, eventName});
+            let channel = getChannel(channelName);
+
+            if (!channel || !channel.subscribed) {
+                channel = socket.subscribe(channelName);
+                let isBound = false;
+                channel.bind('pusher:subscription_succeeded', () => {
+                    // Check so that we do not bind another event with each reconnect attempt
+                    if (!isBound) {
+                        bindEventToChannel(channel, eventName, eventCallback);
+                        resolve();
+                        isBound = true;
+                        return;
+                    }
+
+                    // When subscribing for the first time we register a success callback that can be
+                    // called multiple times when the subscription succeeds again in the future
+                    // e.g. as a result of Pusher disconnecting and reconnecting. This callback does
+                    // not fire on the first subscription_succeeded event.
+                    onResubscribe();
                 });
-                reject(error);
-            });
-        } else {
-            bindEventToChannel(channel, eventName, eventCallback);
-            resolve();
-        }
+
+                channel.bind('pusher:subscription_error', (data: PusherSubscribtionErrorData = {}) => {
+                    const {type, error, status} = data;
+                    Log.hmmm('[Pusher] Issue authenticating with Pusher during subscribe attempt.', {
+                        channelName,
+                        status,
+                        type,
+                        error,
+                    });
+                    reject(error);
+                });
+            } else {
+                bindEventToChannel(channel, eventName, eventCallback);
+                resolve();
+            }
+        });
     });
 }