77 lines
3.4 KiB
Plaintext
77 lines
3.4 KiB
Plaintext
import { fetchServerResponse } from "../fetch-server-response";
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import { createRecordFromThenable } from "../create-record-from-thenable";
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import { readRecordValue } from "../read-record-value";
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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 { handleMutable } from "../handle-mutable";
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import { applyFlightData } from "../apply-flight-data";
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// A version of refresh reducer that keeps the cache around instead of wiping all of it.
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function fastRefreshReducerImpl(state, action) {
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const { cache, mutable, origin } = action;
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const href = state.canonicalUrl;
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const isForCurrentTree = JSON.stringify(mutable.previousTree) === JSON.stringify(state.tree);
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if (isForCurrentTree) {
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return handleMutable(state, mutable);
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}
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if (!cache.data) {
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// TODO-APP: verify that `href` is not an external url.
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// Fetch data from the root of the tree.
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cache.data = createRecordFromThenable(fetchServerResponse(new URL(href, origin), [
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state.tree[0],
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state.tree[1],
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state.tree[2],
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"refetch"
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], state.nextUrl, state.buildId));
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}
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const [flightData, canonicalUrlOverride] = readRecordValue(cache.data);
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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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// Remove cache.data as it has been resolved at this point.
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cache.data = null;
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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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// FlightDataPath with more than two items means unexpected Flight data was returned
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if (flightDataPath.length !== 3) {
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// TODO-APP: handle this case better
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console.log("REFRESH FAILED");
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return state;
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}
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// Given the path can only have two items the items are only the router state and subTreeData for the root.
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const [treePatch] = flightDataPath;
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const newTree = applyRouterStatePatchToTree(// TODO-APP: remove ''
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[
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""
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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, href, state.pushRef.pendingPush);
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}
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const canonicalUrlOverrideHref = canonicalUrlOverride ? createHrefFromUrl(canonicalUrlOverride) : undefined;
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if (canonicalUrlOverride) {
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mutable.canonicalUrl = canonicalUrlOverrideHref;
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}
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const applied = applyFlightData(currentCache, cache, flightDataPath);
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if (applied) {
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mutable.cache = cache;
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currentCache = cache;
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}
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mutable.previousTree = currentTree;
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mutable.patchedTree = newTree;
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mutable.canonicalUrl = href;
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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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function fastRefreshReducerNoop(state, _action) {
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return state;
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}
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export const fastRefreshReducer = process.env.NODE_ENV === "production" ? fastRefreshReducerNoop : fastRefreshReducerImpl;
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//# sourceMappingURL=fast-refresh-reducer.js.map |