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node_modules/next/dist/client/components/router-reducer/fetch-server-response.js

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+'use client';
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+0 && (module.exports = {
+    createFetch: null,
+    createFromNextReadableStream: null,
+    decodeStaticStage: null,
+    fetchServerResponse: null,
+    processFetch: null,
+    resolveStaticStageData: null
+});
+function _export(target, all) {
+    for(var name in all)Object.defineProperty(target, name, {
+        enumerable: true,
+        get: all[name]
+    });
+}
+_export(exports, {
+    createFetch: function() {
+        return createFetch;
+    },
+    createFromNextReadableStream: function() {
+        return createFromNextReadableStream;
+    },
+    decodeStaticStage: function() {
+        return decodeStaticStage;
+    },
+    fetchServerResponse: function() {
+        return fetchServerResponse;
+    },
+    processFetch: function() {
+        return processFetch;
+    },
+    resolveStaticStageData: function() {
+        return resolveStaticStageData;
+    }
+});
+const _client = require("react-server-dom-webpack/client");
+const _invarianterror = require("../../../shared/lib/invariant-error");
+const _approuterheaders = require("../app-router-headers");
+const _appcallserver = require("../../app-call-server");
+const _appfindsourcemapurl = require("../../app-find-source-map-url");
+const _flightdatahelpers = require("../../flight-data-helpers");
+const _setcachebustingsearchparam = require("./set-cache-busting-search-param");
+const _routeparams = require("../../route-params");
+const _deploymentid = require("../../../shared/lib/deployment-id");
+const _navigationbuildid = require("../../navigation-build-id");
+const _constants = require("../../../lib/constants");
+const _cache = require("../segment-cache/cache");
+const _bfcache = require("../segment-cache/bfcache");
+const createFromReadableStream = _client.createFromReadableStream;
+const createFromFetch = _client.createFromFetch;
+let createDebugChannel;
+if (process.env.__NEXT_DEV_SERVER && process.env.__NEXT_REACT_DEBUG_CHANNEL) {
+    createDebugChannel = require('../../dev/debug-channel').createDebugChannel;
+}
+function doMpaNavigation(url) {
+    return (0, _routeparams.urlToUrlWithoutFlightMarker)(new URL(url, location.origin)).toString();
+}
+let isPageUnloading = false;
+if (typeof window !== 'undefined') {
+    // Track when the page is unloading, e.g. due to reloading the page or
+    // performing hard navigations. This allows us to suppress error logging when
+    // the browser cancels in-flight requests during page unload.
+    window.addEventListener('pagehide', ()=>{
+        isPageUnloading = true;
+    });
+    // Reset the flag on pageshow, e.g. when navigating back and the JavaScript
+    // execution context is restored by the browser.
+    window.addEventListener('pageshow', ()=>{
+        isPageUnloading = false;
+    });
+}
+async function fetchServerResponse(url, options) {
+    const { flightRouterState, nextUrl } = options;
+    const headers = {
+        // Enable flight response
+        [_approuterheaders.RSC_HEADER]: '1',
+        // Provide the current router state
+        [_approuterheaders.NEXT_ROUTER_STATE_TREE_HEADER]: (0, _flightdatahelpers.prepareFlightRouterStateForRequest)(flightRouterState, options.isHmrRefresh)
+    };
+    if (process.env.NODE_ENV === 'development' && options.isHmrRefresh) {
+        headers[_approuterheaders.NEXT_HMR_REFRESH_HEADER] = '1';
+    }
+    if (nextUrl) {
+        headers[_approuterheaders.NEXT_URL] = nextUrl;
+    }
+    // In static export mode, we need to modify the URL to request the .txt file,
+    // but we should preserve the original URL for the canonical URL and error handling.
+    const originalUrl = url;
+    try {
+        if (process.env.NODE_ENV === 'production') {
+            if (process.env.__NEXT_CONFIG_OUTPUT === 'export') {
+                // In "output: export" mode, we can't rely on headers to distinguish
+                // between HTML and RSC requests. Instead, we append an extra prefix
+                // to the request.
+                url = new URL(url);
+                if (url.pathname.endsWith('/')) {
+                    url.pathname += 'index.txt';
+                } else {
+                    url.pathname += '.txt';
+                }
+            }
+        }
+        // Typically, during a navigation, we decode the response using Flight's
+        // `createFromFetch` API, which accepts a `fetch` promise.
+        // TODO: Remove this check once the old PPR flag is removed
+        const isLegacyPPR = process.env.__NEXT_PPR && !process.env.__NEXT_CACHE_COMPONENTS;
+        const shouldImmediatelyDecode = !isLegacyPPR;
+        const res = await createFetch(url, headers, 'auto', shouldImmediatelyDecode);
+        const responseUrl = (0, _routeparams.urlToUrlWithoutFlightMarker)(new URL(res.url));
+        const canonicalUrl = res.redirected ? responseUrl : originalUrl;
+        const contentType = res.headers.get('content-type') || '';
+        const interception = !!res.headers.get('vary')?.includes(_approuterheaders.NEXT_URL);
+        const postponed = !!res.headers.get(_approuterheaders.NEXT_DID_POSTPONE_HEADER);
+        let isFlightResponse = contentType.startsWith(_approuterheaders.RSC_CONTENT_TYPE_HEADER);
+        if (process.env.NODE_ENV === 'production') {
+            if (process.env.__NEXT_CONFIG_OUTPUT === 'export') {
+                if (!isFlightResponse) {
+                    isFlightResponse = contentType.startsWith('text/plain');
+                }
+            }
+        }
+        // If fetch returns something different than flight response handle it like a mpa navigation
+        // If the fetch was not 200, we also handle it like a mpa navigation
+        if (!isFlightResponse || !res.ok || !res.body) {
+            // in case the original URL came with a hash, preserve it before redirecting to the new URL
+            if (url.hash) {
+                responseUrl.hash = url.hash;
+            }
+            return doMpaNavigation(responseUrl.toString());
+        }
+        // We may navigate to a page that requires a different Webpack runtime.
+        // In prod, every page will have the same Webpack runtime.
+        // In dev, the Webpack runtime is minimal for each page.
+        // We need to ensure the Webpack runtime is updated before executing client-side JS of the new page.
+        // TODO: This needs to happen in the Flight Client.
+        // Or Webpack needs to include the runtime update in the Flight response as
+        // a blocking script.
+        if (process.env.NODE_ENV !== 'production' && !process.env.TURBOPACK) {
+            await require('../../dev/hot-reloader/app/hot-reloader-app').waitForWebpackRuntimeHotUpdate();
+        }
+        let flightResponsePromise = res.flightResponsePromise;
+        if (flightResponsePromise === null) {
+            // Typically, `createFetch` would have already started decoding the
+            // Flight response. If it hasn't, though, we need to decode it now.
+            // TODO: This should only be reachable if legacy PPR is enabled (i.e. PPR
+            // without Cache Components). Remove this branch once legacy PPR
+            // is deleted.
+            flightResponsePromise = createFromNextReadableStream(res.body, headers, {
+                allowPartialStream: postponed
+            });
+        }
+        const [flightResponse, cacheData] = await Promise.all([
+            flightResponsePromise,
+            res.cacheData
+        ]);
+        if ((res.headers.get(_constants.NEXT_NAV_DEPLOYMENT_ID_HEADER) ?? flightResponse.b) !== (0, _navigationbuildid.getNavigationBuildId)()) {
+            // The server build does not match the client build.
+            return doMpaNavigation(res.url);
+        }
+        const normalizedFlightData = (0, _flightdatahelpers.normalizeFlightData)(flightResponse.f);
+        if (typeof normalizedFlightData === 'string') {
+            return doMpaNavigation(normalizedFlightData);
+        }
+        const staticStageData = cacheData !== null ? await resolveStaticStageData(cacheData, flightResponse, headers) : null;
+        return {
+            flightData: normalizedFlightData,
+            canonicalUrl: canonicalUrl,
+            // TODO: We should be able to read this from the rewrite header, not the
+            // Flight response. Theoretically they should always agree, but there are
+            // currently some cases where it's incorrect for interception routes. We
+            // can always trust the value in the response body. However, per-segment
+            // prefetch responses don't embed the value in the body; they rely on the
+            // header alone. So we need to investigate why the header is sometimes
+            // wrong for interception routes.
+            renderedSearch: flightResponse.q,
+            couldBeIntercepted: interception,
+            supportsPerSegmentPrefetching: flightResponse.S,
+            postponed,
+            // The dynamicStaleTime is only present in the response body when
+            // a page exports unstable_dynamicStaleTime and this is a dynamic render.
+            // When absent (UnknownDynamicStaleTime), the client falls back to the
+            // global DYNAMIC_STALETIME_MS. The value is in seconds.
+            dynamicStaleTime: flightResponse.d ?? _bfcache.UnknownDynamicStaleTime,
+            staticStageData,
+            runtimePrefetchStream: flightResponse.p ?? null,
+            responseHeaders: res.headers,
+            debugInfo: flightResponsePromise._debugInfo ?? null
+        };
+    } catch (err) {
+        if (!isPageUnloading) {
+            console.error(`Failed to fetch RSC payload for ${originalUrl}. Falling back to browser navigation.`, err);
+        }
+        // If fetch fails handle it like a mpa navigation
+        // TODO-APP: Add a test for the case where a CORS request fails, e.g. external url redirect coming from the response.
+        // See https://github.com/vercel/next.js/issues/43605#issuecomment-1451617521 for a reproduction.
+        return originalUrl.toString();
+    }
+}
+async function processFetch(response) {
+    if (process.env.__NEXT_CACHE_COMPONENTS) {
+        if (!response.body) {
+            throw Object.defineProperty(new _invarianterror.InvariantError('Expected RSC navigation response to have a body'), "__NEXT_ERROR_CODE", {
+                value: "E1088",
+                enumerable: false,
+                configurable: true
+            });
+        }
+        const { stream, isPartial } = await (0, _cache.stripIsPartialByte)(response.body);
+        let responseStream;
+        let cacheData;
+        if (process.env.__NEXT_EXPERIMENTAL_CACHED_NAVIGATIONS) {
+            const [stream1, stream2] = stream.tee();
+            responseStream = stream1;
+            cacheData = {
+                isResponsePartial: isPartial,
+                responseBodyClone: stream2
+            };
+        } else {
+            responseStream = stream;
+            cacheData = {
+                isResponsePartial: isPartial
+            };
+        }
+        const strippedResponse = new Response(responseStream, {
+            headers: response.headers,
+            status: response.status,
+            statusText: response.statusText
+        });
+        // The Response constructor doesn't preserve `url` or `redirected` from
+        // the original. We need both: `url` for React DevTools and `redirected`
+        // for the redirect replay logic below.
+        Object.defineProperty(strippedResponse, 'url', {
+            value: response.url
+        });
+        Object.defineProperty(strippedResponse, 'redirected', {
+            value: response.redirected
+        });
+        return {
+            response: strippedResponse,
+            cacheData
+        };
+    }
+    return {
+        response,
+        cacheData: null
+    };
+}
+async function resolveStaticStageData(cacheData, flightResponse, headers) {
+    const { isResponsePartial, responseBodyClone } = cacheData;
+    if (responseBodyClone) {
+        if (!isResponsePartial) {
+            // Fully static — cache the entire decoded response as-is.
+            responseBodyClone.cancel();
+            return {
+                response: flightResponse,
+                isResponsePartial: false
+            };
+        }
+        if (flightResponse.l !== undefined) {
+            // Partially static — truncate the body clone at the byte boundary and
+            // decode it.
+            const response = await decodeStaticStage(responseBodyClone, flightResponse.l, headers);
+            return {
+                response,
+                isResponsePartial: true
+            };
+        }
+        // No caching — cancel the unused clone.
+        responseBodyClone.cancel();
+    }
+    return null;
+}
+async function decodeStaticStage(responseBodyClone, staticStageByteLengthPromise, headers) {
+    const staticStageByteLength = await staticStageByteLengthPromise;
+    const truncatedStream = truncateStream(responseBodyClone, staticStageByteLength);
+    return createFromNextReadableStream(truncatedStream, headers, {
+        allowPartialStream: true
+    });
+}
+async function createFetch(url, headers, fetchPriority, shouldImmediatelyDecode, signal) {
+    // TODO: In output: "export" mode, the headers do nothing. Omit them (and the
+    // cache busting search param) from the request so they're
+    // maximally cacheable.
+    if (process.env.__NEXT_TEST_MODE && fetchPriority !== null) {
+        headers['Next-Test-Fetch-Priority'] = fetchPriority;
+    }
+    const deploymentId = (0, _deploymentid.getDeploymentId)();
+    if (deploymentId) {
+        headers['x-deployment-id'] = deploymentId;
+    }
+    if (process.env.__NEXT_DEV_SERVER) {
+        if (self.__next_r) {
+            headers[_approuterheaders.NEXT_HTML_REQUEST_ID_HEADER] = self.__next_r;
+        }
+        // Create a new request ID for the server action request. The server uses
+        // this to tag debug information sent via WebSocket to the client, which
+        // then routes those chunks to the debug channel associated with this ID.
+        headers[_approuterheaders.NEXT_REQUEST_ID_HEADER] = crypto.getRandomValues(new Uint32Array(1))[0].toString(16);
+    }
+    const fetchOptions = {
+        // Backwards compat for older browsers. `same-origin` is the default in modern browsers.
+        credentials: 'same-origin',
+        headers,
+        priority: fetchPriority || undefined,
+        signal
+    };
+    // `fetchUrl` is slightly different from `url` because we add a cache-busting
+    // search param to it. This should not leak outside of this function, so we
+    // track them separately.
+    let fetchUrl = new URL(url);
+    (0, _setcachebustingsearchparam.setCacheBustingSearchParam)(fetchUrl, headers);
+    let processed = fetch(fetchUrl, fetchOptions).then(processFetch);
+    let fetchPromise = processed.then(({ response })=>response);
+    // Immediately pass the fetch promise to the Flight client so that the debug
+    // info includes the latency from the client to the server. The internal timer
+    // in React starts as soon as `createFromFetch` is called.
+    //
+    // The only case where we don't do this is during a prefetch, because a
+    // top-level prefetch response never blocks a navigation; if it hasn't already
+    // been written into the cache by the time the navigation happens, the router
+    // will go straight to a dynamic request.
+    let flightResponsePromise = shouldImmediatelyDecode ? createFromNextFetch(fetchPromise, headers) : null;
+    let browserResponse = await fetchPromise;
+    // If the server responds with a redirect (e.g. 307), and the redirected
+    // location does not contain the cache busting search param set in the
+    // original request, the response is likely invalid — when following the
+    // redirect, the browser forwards the request headers, but since the cache
+    // busting search param is missing, the server will reject the request due to
+    // a mismatch.
+    //
+    // Ideally, we would be able to intercept the redirect response and perform it
+    // manually, instead of letting the browser automatically follow it, but this
+    // is not allowed by the fetch API.
+    //
+    // So instead, we must "replay" the redirect by fetching the new location
+    // again, but this time we'll append the cache busting search param to prevent
+    // a mismatch.
+    //
+    // TODO: We can optimize Next.js's built-in middleware APIs by returning a
+    // custom status code, to prevent the browser from automatically following it.
+    //
+    // This does not affect Server Action-based redirects; those are encoded
+    // differently, as part of the Flight body. It only affects redirects that
+    // occur in a middleware or a third-party proxy.
+    let redirected = browserResponse.redirected;
+    if (process.env.__NEXT_CLIENT_VALIDATE_RSC_REQUEST_HEADERS) {
+        // This is to prevent a redirect loop. Same limit used by Chrome.
+        const MAX_REDIRECTS = 20;
+        for(let n = 0; n < MAX_REDIRECTS; n++){
+            if (!browserResponse.redirected) {
+                break;
+            }
+            const responseUrl = new URL(browserResponse.url, fetchUrl);
+            if (responseUrl.origin !== fetchUrl.origin) {
+                break;
+            }
+            if (responseUrl.searchParams.get(_approuterheaders.NEXT_RSC_UNION_QUERY) === fetchUrl.searchParams.get(_approuterheaders.NEXT_RSC_UNION_QUERY)) {
+                break;
+            }
+            // The RSC request was redirected. Assume the response is invalid.
+            //
+            // Append the cache busting search param to the redirected URL and
+            // fetch again.
+            // TODO: We should abort the previous request.
+            fetchUrl = new URL(responseUrl);
+            (0, _setcachebustingsearchparam.setCacheBustingSearchParam)(fetchUrl, headers);
+            processed = fetch(fetchUrl, fetchOptions).then(processFetch);
+            fetchPromise = processed.then(({ response })=>response);
+            flightResponsePromise = shouldImmediatelyDecode ? createFromNextFetch(fetchPromise, headers) : null;
+            browserResponse = await fetchPromise;
+            // We just performed a manual redirect, so this is now true.
+            redirected = true;
+        }
+    }
+    // Remove the cache busting search param from the response URL, to prevent it
+    // from leaking outside of this function.
+    const responseUrl = new URL(browserResponse.url, fetchUrl);
+    responseUrl.searchParams.delete(_approuterheaders.NEXT_RSC_UNION_QUERY);
+    const rscResponse = {
+        url: responseUrl.href,
+        // This is true if any redirects occurred, either automatically by the
+        // browser, or manually by us. So it's different from
+        // `browserResponse.redirected`, which only tells us whether the browser
+        // followed a redirect, and only for the last response in the chain.
+        redirected,
+        // These can be copied from the last browser response we received. We
+        // intentionally only expose the subset of fields that are actually used
+        // elsewhere in the codebase.
+        ok: browserResponse.ok,
+        headers: browserResponse.headers,
+        body: browserResponse.body,
+        status: browserResponse.status,
+        // This is the exact promise returned by `createFromFetch`. It contains
+        // debug information that we need to transfer to any derived promises that
+        // are later rendered by React.
+        flightResponsePromise: flightResponsePromise,
+        cacheData: processed.then(({ cacheData })=>cacheData)
+    };
+    return rscResponse;
+}
+function createFromNextReadableStream(flightStream, requestHeaders, options) {
+    return createFromReadableStream(flightStream, {
+        callServer: _appcallserver.callServer,
+        findSourceMapURL: _appfindsourcemapurl.findSourceMapURL,
+        debugChannel: createDebugChannel && createDebugChannel(requestHeaders),
+        unstable_allowPartialStream: options?.allowPartialStream
+    });
+}
+function createFromNextFetch(promiseForResponse, requestHeaders) {
+    return createFromFetch(promiseForResponse, {
+        callServer: _appcallserver.callServer,
+        findSourceMapURL: _appfindsourcemapurl.findSourceMapURL,
+        debugChannel: createDebugChannel && createDebugChannel(requestHeaders)
+    });
+}
+function truncateStream(stream, byteLength) {
+    const reader = stream.getReader();
+    let remaining = byteLength;
+    return new ReadableStream({
+        async pull (controller) {
+            if (remaining <= 0) {
+                reader.cancel();
+                controller.close();
+                return;
+            }
+            const { done, value } = await reader.read();
+            if (done) {
+                controller.close();
+                return;
+            }
+            if (value.byteLength <= remaining) {
+                controller.enqueue(value);
+                remaining -= value.byteLength;
+            } else {
+                controller.enqueue(value.subarray(0, remaining));
+                remaining = 0;
+                reader.cancel();
+                controller.close();
+            }
+        },
+        cancel () {
+            reader.cancel();
+        }
+    });
+}
+
+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;
+}
+
+//# sourceMappingURL=fetch-server-response.js.map