56 lines
2.6 KiB
Plaintext
56 lines
2.6 KiB
Plaintext
import { createHrefFromUrl } from "../create-href-from-url";
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import { applyRouterStatePatchToTree } from "../apply-router-state-patch-to-tree";
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import { isNavigatingToNewRootLayout } from "../is-navigating-to-new-root-layout";
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import { handleExternalUrl } from "./navigate-reducer";
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import { applyFlightData } from "../apply-flight-data";
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import { handleMutable } from "../handle-mutable";
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export function serverPatchReducer(state, action) {
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const { flightData, previousTree, overrideCanonicalUrl, cache, mutable } = action;
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const isForCurrentTree = JSON.stringify(previousTree) === JSON.stringify(state.tree);
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// When a fetch is slow to resolve it could be that you navigated away while the request was happening or before the reducer runs.
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// In that case opt-out of applying the patch given that the data could be stale.
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if (!isForCurrentTree) {
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// TODO-APP: Handle tree mismatch
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console.log("TREE MISMATCH");
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// Keep everything as-is.
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return state;
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}
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if (mutable.previousTree) {
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return handleMutable(state, mutable);
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}
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// Handle case when navigating to page in `pages` from `app`
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if (typeof flightData === "string") {
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return handleExternalUrl(state, mutable, flightData, state.pushRef.pendingPush);
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}
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let currentTree = state.tree;
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let currentCache = state.cache;
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for (const flightDataPath of flightData){
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// Slices off the last segment (which is at -4) as it doesn't exist in the tree yet
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const flightSegmentPath = flightDataPath.slice(0, -4);
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const [treePatch] = flightDataPath.slice(-3, -2);
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const newTree = applyRouterStatePatchToTree(// TODO-APP: remove ''
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[
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"",
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...flightSegmentPath
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], currentTree, treePatch);
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if (newTree === null) {
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throw new Error("SEGMENT MISMATCH");
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}
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if (isNavigatingToNewRootLayout(currentTree, newTree)) {
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return handleExternalUrl(state, mutable, state.canonicalUrl, state.pushRef.pendingPush);
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}
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const canonicalUrlOverrideHref = overrideCanonicalUrl ? createHrefFromUrl(overrideCanonicalUrl) : undefined;
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if (canonicalUrlOverrideHref) {
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mutable.canonicalUrl = canonicalUrlOverrideHref;
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}
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applyFlightData(currentCache, cache, flightDataPath);
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mutable.previousTree = currentTree;
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mutable.patchedTree = newTree;
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mutable.cache = cache;
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currentCache = cache;
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currentTree = newTree;
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}
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return handleMutable(state, mutable);
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}
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//# sourceMappingURL=server-patch-reducer.js.map |