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Original file line number Diff line number Diff line change
Expand Up @@ -26,22 +26,24 @@ const defaultProps = {
screenOptions: undefined,
};

function splitRoutes(routes) {
const reportRoutes = [];
const rhpRoutes = [];
const otherRoutes = [];
function reduceReportRoutes(routes) {
const result = [];
let count = 0;
const reverseRoutes = [...routes].reverse();

routes.forEach((route) => {
reverseRoutes.forEach((route) => {
if (route.name === NAVIGATORS.CENTRAL_PANE_NAVIGATOR) {
reportRoutes.push(route);
} else if (route.name === NAVIGATORS.RIGHT_MODAL_NAVIGATOR) {
rhpRoutes.push(route);
// Remove all report routes except the last 3. This will improve performance.
if (count < 3) {
result.push(route);
count++;
}
} else {
otherRoutes.push(route);
result.push(route);
}
});

return {reportRoutes, rhpRoutes, otherRoutes};
return result.reverse();
}

function ResponsiveStackNavigator(props) {
Expand All @@ -60,15 +62,12 @@ function ResponsiveStackNavigator(props) {
});

const stateToRender = useMemo(() => {
const {reportRoutes, rhpRoutes, otherRoutes} = splitRoutes(state.routes);

// Remove all report routes except the last 3. This will improve performance.
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We can keep this comment but just move to here

const limitedReportRoutes = reportRoutes.slice(-3);
const result = reduceReportRoutes(state.routes);

return {
...state,
index: otherRoutes.length + limitedReportRoutes.length + rhpRoutes.length - 1,
routes: [...otherRoutes, ...limitedReportRoutes, ...rhpRoutes],
index: result.length - 1,
routes: [...result],
};
}, [state]);

Expand Down