next
Version:
The React Framework
65 lines (63 loc) • 2.55 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
Object.defineProperty(exports, "findHeadInCache", {
enumerable: true,
get: function() {
return findHeadInCache;
}
});
const _createroutercachekey = require("../create-router-cache-key");
function findHeadInCache(cache, parallelRoutes) {
return findHeadInCacheImpl(cache, parallelRoutes, '');
}
function findHeadInCacheImpl(cache, parallelRoutes, keyPrefix) {
const isLastItem = Object.keys(parallelRoutes).length === 0;
if (isLastItem) {
// Returns the entire Cache Node of the segment whose head we will render.
return [
cache,
keyPrefix
];
}
// First try the 'children' parallel route if it exists
// when starting from the "root", this corresponds with the main page component
if (parallelRoutes.children) {
const [segment, childParallelRoutes] = parallelRoutes.children;
const childSegmentMap = cache.parallelRoutes.get('children');
if (childSegmentMap) {
const cacheKey = (0, _createroutercachekey.createRouterCacheKey)(segment);
const cacheNode = childSegmentMap.get(cacheKey);
if (cacheNode) {
const item = findHeadInCacheImpl(cacheNode, childParallelRoutes, keyPrefix + '/' + cacheKey);
if (item) return item;
}
}
}
// if we didn't find metadata in the page slot, check the other parallel routes
for(const key in parallelRoutes){
if (key === 'children') continue; // already checked above
const [segment, childParallelRoutes] = parallelRoutes[key];
const childSegmentMap = cache.parallelRoutes.get(key);
if (!childSegmentMap) {
continue;
}
const cacheKey = (0, _createroutercachekey.createRouterCacheKey)(segment);
const cacheNode = childSegmentMap.get(cacheKey);
if (!cacheNode) {
continue;
}
const item = findHeadInCacheImpl(cacheNode, childParallelRoutes, keyPrefix + '/' + cacheKey);
if (item) {
return item;
}
}
return null;
}
if ((typeof exports.default === 'function' || (typeof exports.default === 'object' && exports.default !== null)) && typeof exports.default.__esModule === 'undefined') {
Object.defineProperty(exports.default, '__esModule', { value: true });
Object.assign(exports.default, exports);
module.exports = exports.default;
}
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