next/dist/client/components/router-reducer/reducers/server-patch-reducer.js

The React Framework

"use strict";
Object.defineProperty(exports, "__esModule", {
    value: true
});
Object.defineProperty(exports, "serverPatchReducer", {
    enumerable: true,
    get: function() {
        return serverPatchReducer;
    }
});
const _createhreffromurl = require("../create-href-from-url");
const _applyrouterstatepatchtotree = require("../apply-router-state-patch-to-tree");
const _isnavigatingtonewrootlayout = require("../is-navigating-to-new-root-layout");
const _navigatereducer = require("./navigate-reducer");
const _applyflightdata = require("../apply-flight-data");
const _handlemutable = require("../handle-mutable");
const _approuter = require("../../app-router");
function serverPatchReducer(state, action) {
    const { serverResponse: { flightData, canonicalUrl: canonicalUrlOverride }, navigatedAt } = action;
    const mutable = {};
    mutable.preserveCustomHistoryState = false;
    // Handle case when navigating to page in `pages` from `app`
    if (typeof flightData === 'string') {
        return (0, _navigatereducer.handleExternalUrl)(state, mutable, flightData, state.pushRef.pendingPush);
    }
    let currentTree = state.tree;
    let currentCache = state.cache;
    for (const normalizedFlightData of flightData){
        const { segmentPath: flightSegmentPath, tree: treePatch } = normalizedFlightData;
        const newTree = (0, _applyrouterstatepatchtotree.applyRouterStatePatchToTree)(// TODO-APP: remove ''
        [
            '',
            ...flightSegmentPath
        ], currentTree, treePatch, state.canonicalUrl);
        // `applyRouterStatePatchToTree` returns `null` when it determined that the server response is not applicable to the current tree.
        // In other words, the server responded with a tree that doesn't match what the client is currently rendering.
        // This can happen if the server patch action took longer to resolve than a subsequent navigation which would have changed the tree.
        // Previously this case triggered an MPA navigation but it should be safe to simply discard the server response rather than forcing
        // the entire page to reload.
        if (newTree === null) {
            return state;
        }
        if ((0, _isnavigatingtonewrootlayout.isNavigatingToNewRootLayout)(currentTree, newTree)) {
            return (0, _navigatereducer.handleExternalUrl)(state, mutable, state.canonicalUrl, state.pushRef.pendingPush);
        }
        const canonicalUrlOverrideHref = canonicalUrlOverride ? (0, _createhreffromurl.createHrefFromUrl)(canonicalUrlOverride) : undefined;
        if (canonicalUrlOverrideHref) {
            mutable.canonicalUrl = canonicalUrlOverrideHref;
        }
        const cache = (0, _approuter.createEmptyCacheNode)();
        (0, _applyflightdata.applyFlightData)(navigatedAt, currentCache, cache, normalizedFlightData);
        mutable.patchedTree = newTree;
        mutable.cache = cache;
        currentCache = cache;
        currentTree = newTree;
    }
    return (0, _handlemutable.handleMutable)(state, mutable);
}

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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