Initial commit

node_modules/next/dist/esm/client/components/router-reducer/fill-cache-with-new-subtree-data.js

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+import { invalidateCacheByRouterState } from './invalidate-cache-by-router-state';
+import { fillLazyItemsTillLeafWithHead } from './fill-lazy-items-till-leaf-with-head';
+import { createRouterCacheKey } from './create-router-cache-key';
+import { PAGE_SEGMENT_KEY } from '../../../shared/lib/segment';
+/**
+ * Common logic for filling cache with new sub tree data.
+ */ function fillCacheHelper(navigatedAt, newCache, existingCache, flightData, prefetchEntry, fillLazyItems) {
+    const { segmentPath, seedData: cacheNodeSeedData, tree: treePatch, head } = flightData;
+    let newCacheNode = newCache;
+    let existingCacheNode = existingCache;
+    for(let i = 0; i < segmentPath.length; i += 2){
+        const parallelRouteKey = segmentPath[i];
+        const segment = segmentPath[i + 1];
+        // segmentPath is a repeating tuple of parallelRouteKey and segment
+        // we know we've hit the last entry we've reached our final pair
+        const isLastEntry = i === segmentPath.length - 2;
+        const cacheKey = createRouterCacheKey(segment);
+        const existingChildSegmentMap = existingCacheNode.parallelRoutes.get(parallelRouteKey);
+        if (!existingChildSegmentMap) {
+            continue;
+        }
+        let childSegmentMap = newCacheNode.parallelRoutes.get(parallelRouteKey);
+        if (!childSegmentMap || childSegmentMap === existingChildSegmentMap) {
+            childSegmentMap = new Map(existingChildSegmentMap);
+            newCacheNode.parallelRoutes.set(parallelRouteKey, childSegmentMap);
+        }
+        const existingChildCacheNode = existingChildSegmentMap.get(cacheKey);
+        let childCacheNode = childSegmentMap.get(cacheKey);
+        if (isLastEntry) {
+            if (cacheNodeSeedData && (!childCacheNode || !childCacheNode.lazyData || childCacheNode === existingChildCacheNode)) {
+                const incomingSegment = cacheNodeSeedData[0];
+                const rsc = cacheNodeSeedData[1];
+                const loading = cacheNodeSeedData[3];
+                childCacheNode = {
+                    lazyData: null,
+                    // When `fillLazyItems` is false, we only want to fill the RSC data for the layout,
+                    // not the page segment.
+                    rsc: fillLazyItems || incomingSegment !== PAGE_SEGMENT_KEY ? rsc : null,
+                    prefetchRsc: null,
+                    head: null,
+                    prefetchHead: null,
+                    loading,
+                    parallelRoutes: fillLazyItems && existingChildCacheNode ? new Map(existingChildCacheNode.parallelRoutes) : new Map(),
+                    navigatedAt
+                };
+                if (existingChildCacheNode && fillLazyItems) {
+                    invalidateCacheByRouterState(childCacheNode, existingChildCacheNode, treePatch);
+                }
+                if (fillLazyItems) {
+                    fillLazyItemsTillLeafWithHead(navigatedAt, childCacheNode, existingChildCacheNode, treePatch, cacheNodeSeedData, head, prefetchEntry);
+                }
+                childSegmentMap.set(cacheKey, childCacheNode);
+            }
+            continue;
+        }
+        if (!childCacheNode || !existingChildCacheNode) {
+            continue;
+        }
+        if (childCacheNode === existingChildCacheNode) {
+            childCacheNode = {
+                lazyData: childCacheNode.lazyData,
+                rsc: childCacheNode.rsc,
+                prefetchRsc: childCacheNode.prefetchRsc,
+                head: childCacheNode.head,
+                prefetchHead: childCacheNode.prefetchHead,
+                parallelRoutes: new Map(childCacheNode.parallelRoutes),
+                loading: childCacheNode.loading
+            };
+            childSegmentMap.set(cacheKey, childCacheNode);
+        }
+        // Move deeper into the cache nodes
+        newCacheNode = childCacheNode;
+        existingCacheNode = existingChildCacheNode;
+    }
+}
+/**
+ * Fill cache with rsc based on flightDataPath
+ */ export function fillCacheWithNewSubTreeData(navigatedAt, newCache, existingCache, flightData, prefetchEntry) {
+    fillCacheHelper(navigatedAt, newCache, existingCache, flightData, prefetchEntry, true);
+}
+export function fillCacheWithNewSubTreeDataButOnlyLoading(navigatedAt, newCache, existingCache, flightData, prefetchEntry) {
+    fillCacheHelper(navigatedAt, newCache, existingCache, flightData, prefetchEntry, false);
+}
+
+//# sourceMappingURL=fill-cache-with-new-subtree-data.js.map