next
Version:
The React Framework
46 lines (45 loc) • 2.25 kB
JavaScript
import { createRouterCacheKey } from './create-router-cache-key';
import { getNextFlightSegmentPath } from '../../flight-data-helpers';
/**
* Fill cache up to the end of the flightSegmentPath, invalidating anything below it.
*/ export function invalidateCacheBelowFlightSegmentPath(newCache, existingCache, flightSegmentPath) {
const isLastEntry = flightSegmentPath.length <= 2;
const [parallelRouteKey, segment] = flightSegmentPath;
const cacheKey = createRouterCacheKey(segment);
const existingChildSegmentMap = existingCache.parallelRoutes.get(parallelRouteKey);
if (!existingChildSegmentMap) {
// Bailout because the existing cache does not have the path to the leaf node
// Will trigger lazy fetch in layout-router because of missing segment
return;
}
let childSegmentMap = newCache.parallelRoutes.get(parallelRouteKey);
if (!childSegmentMap || childSegmentMap === existingChildSegmentMap) {
childSegmentMap = new Map(existingChildSegmentMap);
newCache.parallelRoutes.set(parallelRouteKey, childSegmentMap);
}
// In case of last entry don't copy further down.
if (isLastEntry) {
childSegmentMap.delete(cacheKey);
return;
}
const existingChildCacheNode = existingChildSegmentMap.get(cacheKey);
let childCacheNode = childSegmentMap.get(cacheKey);
if (!childCacheNode || !existingChildCacheNode) {
// Bailout because the existing cache does not have the path to the leaf node
// Will trigger lazy fetch in layout-router because of missing segment
return;
}
if (childCacheNode === existingChildCacheNode) {
childCacheNode = {
lazyData: childCacheNode.lazyData,
rsc: childCacheNode.rsc,
prefetchRsc: childCacheNode.prefetchRsc,
head: childCacheNode.head,
prefetchHead: childCacheNode.prefetchHead,
parallelRoutes: new Map(childCacheNode.parallelRoutes)
};
childSegmentMap.set(cacheKey, childCacheNode);
}
invalidateCacheBelowFlightSegmentPath(childCacheNode, existingChildCacheNode, getNextFlightSegmentPath(flightSegmentPath));
}
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