FM / app-render

/opt/canhelp/node_modules/next/dist/esm/server/app-render/

/opt/canhelp/node_modules/next/dist/esm/server/app-render

Name	Size	Mode	Actions
metadata-insertion/	-	0755	rm
module-loading/	-	0755	rm
rsc/	-	0755	rm
action-async-storage-instance.js	192	0644	edit dl rm
action-async-storage-instance.js.map	503	0644	edit dl rm
action-async-storage.external.js	302	0644	edit dl rm
action-async-storage.external.js.map	765	0644	edit dl rm
action-handler.js	47638	0644	edit dl rm
action-handler.js.map	68659	0644	edit dl rm
action-utils.js	3705	0644	edit dl rm
action-utils.js.map	5560	0644	edit dl rm
after-task-async-storage-instance.js	199	0644	edit dl rm
after-task-async-storage-instance.js.map	523	0644	edit dl rm
after-task-async-storage.external.js	311	0644	edit dl rm
after-task-async-storage.external.js.map	1064	0644	edit dl rm
app-render-prerender-utils.js	6762	0644	edit dl rm
app-render-prerender-utils.js.map	10813	0644	edit dl rm
app-render-render-utils.js	1119	0644	edit dl rm
app-render-render-utils.js.map	1618	0644	edit dl rm
app-render.js	157902	0644	edit dl rm
app-render.js.map	239776	0644	edit dl rm
async-local-storage.js	1496	0644	edit dl rm
async-local-storage.js.map	2735	0644	edit dl rm
cache-signal.js	5730	0644	edit dl rm
cache-signal.js.map	8119	0644	edit dl rm
collect-segment-data.js	13005	0644	edit dl rm
collect-segment-data.js.map	22398	0644	edit dl rm
create-component-styles-and-scripts.js	1138	0644	edit dl rm
create-component-styles-and-scripts.js.map	2482	0644	edit dl rm
create-component-tree.js	39485	0644	edit dl rm
create-component-tree.js.map	59317	0644	edit dl rm
create-error-handler.js	8900	0644	edit dl rm
create-error-handler.js.map	13934	0644	edit dl rm
create-flight-router-state-from-loader-tree.js	3249	0644	edit dl rm
create-flight-router-state-from-loader-tree.js.map	5682	0644	edit dl rm
csrf-protection.js	2801	0644	edit dl rm
csrf-protection.js.map	3924	0644	edit dl rm
dynamic-access-async-storage-instance.js	207	0644	edit dl rm
dynamic-access-async-storage-instance.js.map	537	0644	edit dl rm
dynamic-access-async-storage.external.js	339	0644	edit dl rm
dynamic-access-async-storage.external.js.map	823	0644	edit dl rm
dynamic-rendering.js	30863	0644	edit dl rm
dynamic-rendering.js.map	45598	0644	edit dl rm
encryption-utils-server.js	4277	0644	edit dl rm
encryption-utils-server.js.map	7131	0644	edit dl rm
encryption-utils.js	6595	0644	edit dl rm
encryption-utils.js.map	11128	0644	edit dl rm
encryption.js	11249	0644	edit dl rm
encryption.js.map	16768	0644	edit dl rm
entry-base.js	3181	0644	edit dl rm
entry-base.js.map	6055	0644	edit dl rm
flight-render-result.js	509	0644	edit dl rm
flight-render-result.js.map	987	0644	edit dl rm
get-asset-query-string.js	779	0644	edit dl rm
get-asset-query-string.js.map	1573	0644	edit dl rm
get-css-inlined-link-tags.js	1403	0644	edit dl rm
get-css-inlined-link-tags.js.map	2570	0644	edit dl rm
get-layer-assets.js	2787	0644	edit dl rm
get-layer-assets.js.map	5550	0644	edit dl rm
get-preloadable-fonts.js	1294	0644	edit dl rm
get-preloadable-fonts.js.map	2384	0644	edit dl rm
get-script-nonce-from-header.js	1775	0644	edit dl rm
get-script-nonce-from-header.js.map	2784	0644	edit dl rm
get-segment-param.js	1358	0644	edit dl rm
get-segment-param.js.map	2352	0644	edit dl rm
get-short-dynamic-param-type.js	664	0644	edit dl rm
get-short-dynamic-param-type.js.map	1167	0644	edit dl rm
has-loading-component-in-tree.js	312	0644	edit dl rm
has-loading-component-in-tree.js.map	796	0644	edit dl rm
interop-default.js	181	0644	edit dl rm
interop-default.js.map	394	0644	edit dl rm
make-get-server-inserted-html.js	4076	0644	edit dl rm
make-get-server-inserted-html.js.map	6615	0644	edit dl rm
parse-and-validate-flight-router-state.js	1571	0644	edit dl rm
parse-and-validate-flight-router-state.js.map	2435	0644	edit dl rm
parse-loader-tree.js	798	0644	edit dl rm
parse-loader-tree.js.map	1427	0644	edit dl rm
postponed-state.js	5431	0644	edit dl rm
postponed-state.js.map	9091	0644	edit dl rm
prospective-render-utils.js	2277	0644	edit dl rm
prospective-render-utils.js.map	3421	0644	edit dl rm
react-large-shell-error.js	370	0644	edit dl rm
react-large-shell-error.js.map	773	0644	edit dl rm
react-server.node.js	316	0644	edit dl rm
react-server.node.js.map	637	0644	edit dl rm
render-css-resource.js	2407	0644	edit dl rm
render-css-resource.js.map	3963	0644	edit dl rm
required-scripts.js	2442	0644	edit dl rm
required-scripts.js.map	4294	0644	edit dl rm
segment-explorer-path.js	2756	0644	edit dl rm
segment-explorer-path.js.map	5208	0644	edit dl rm
server-inserted-html.js	1030	0644	edit dl rm
server-inserted-html.js.map	1778	0644	edit dl rm
strip-flight-headers.js	365	0644	edit dl rm
strip-flight-headers.js.map	738	0644	edit dl rm
types.js	2020	0644	edit dl rm
types.js.map	13145	0644	edit dl rm
use-flight-response.js	6758	0644	edit dl rm
use-flight-response.js.map	11158	0644	edit dl rm
walk-tree-with-flight-router-state.js	10808	0644	edit dl rm
walk-tree-with-flight-router-state.js.map	17382	0644	edit dl rm
work-async-storage-instance.js	188	0644	edit dl rm
work-async-storage-instance.js.map	491	0644	edit dl rm
work-async-storage.external.js	292	0644	edit dl rm
work-async-storage.external.js.map	4274	0644	edit dl rm
work-unit-async-storage-instance.js	197	0644	edit dl rm
work-unit-async-storage-instance.js.map	517	0644	edit dl rm
work-unit-async-storage.external.js	6423	0644	edit dl rm
work-unit-async-storage.external.js.map	20959	0644	edit dl rm

Edit: /opt/canhelp/node_modules/next/dist/esm/server/app-render/collect-segment-data.js (13005B)

import { jsx as _jsx } from "react/jsx-runtime";
// eslint-disable-next-line import/no-extraneous-dependencies
import { createFromReadableStream } from 'react-server-dom-webpack/client';
// eslint-disable-next-line import/no-extraneous-dependencies
import { unstable_prerender as prerender } from 'react-server-dom-webpack/static';
import { streamFromBuffer, streamToBuffer } from '../stream-utils/node-web-streams-helper';
import { waitAtLeastOneReactRenderTask } from '../../lib/scheduler';
import { createSegmentRequestKeyPart, appendSegmentRequestKeyPart, ROOT_SEGMENT_REQUEST_KEY } from '../../shared/lib/segment-cache/segment-value-encoding';
import { getDigestForWellKnownError } from './create-error-handler';
const filterStackFrame = process.env.NODE_ENV !== 'production' ? require('../lib/source-maps').filterStackFrameDEV : undefined;
const findSourceMapURL = process.env.NODE_ENV !== 'production' ? require('../lib/source-maps').findSourceMapURLDEV : undefined;
function onSegmentPrerenderError(error) {
    const digest = getDigestForWellKnownError(error);
    if (digest) {
        return digest;
    }
// We don't need to log the errors because we would have already done that
// when generating the original Flight stream for the whole page.
}
export async function collectSegmentData(isClientParamParsingEnabled, fullPageDataBuffer, staleTime, clientModules, serverConsumerManifest) {
    // Traverse the router tree and generate a prefetch response for each segment.
    // A mutable map to collect the results as we traverse the route tree.
    const resultMap = new Map();
    // Before we start, warm up the module cache by decoding the page data once.
    // Then we can assume that any remaining async tasks that occur the next time
    // are due to hanging promises caused by dynamic data access. Note we only
    // have to do this once per page, not per individual segment.
    //
    try {
        await createFromReadableStream(streamFromBuffer(fullPageDataBuffer), {
            findSourceMapURL,
            serverConsumerManifest
        });
        await waitAtLeastOneReactRenderTask();
    } catch  {}
    // Create an abort controller that we'll use to stop the stream.
    const abortController = new AbortController();
    const onCompletedProcessingRouteTree = async ()=>{
        // Since all we're doing is decoding and re-encoding a cached prerender, if
        // serializing the stream takes longer than a microtask, it must because of
        // hanging promises caused by dynamic data.
        await waitAtLeastOneReactRenderTask();
        abortController.abort();
    };
    // Generate a stream for the route tree prefetch. While we're walking the
    // tree, we'll also spawn additional tasks to generate the segment prefetches.
    // The promises for these tasks are pushed to a mutable array that we will
    // await once the route tree is fully rendered.
    const segmentTasks = [];
    const { prelude: treeStream } = await prerender(// RootTreePrefetch is not a valid return type for a React component, but
    // we need to use a component so that when we decode the original stream
    // inside of it, the side effects are transferred to the new stream.
    // @ts-expect-error
    /*#__PURE__*/ _jsx(PrefetchTreeData, {
        isClientParamParsingEnabled: isClientParamParsingEnabled,
        fullPageDataBuffer: fullPageDataBuffer,
        serverConsumerManifest: serverConsumerManifest,
        clientModules: clientModules,
        staleTime: staleTime,
        segmentTasks: segmentTasks,
        onCompletedProcessingRouteTree: onCompletedProcessingRouteTree
    }), clientModules, {
        filterStackFrame,
        signal: abortController.signal,
        onError: onSegmentPrerenderError
    });
    // Write the route tree to a special `/_tree` segment.
    const treeBuffer = await streamToBuffer(treeStream);
    resultMap.set('/_tree', treeBuffer);
    // Now that we've finished rendering the route tree, all the segment tasks
    // should have been spawned. Await them in parallel and write the segment
    // prefetches to the result map.
    for (const [segmentPath, buffer] of (await Promise.all(segmentTasks))){
        resultMap.set(segmentPath, buffer);
    }
    return resultMap;
}
async function PrefetchTreeData({ isClientParamParsingEnabled, fullPageDataBuffer, serverConsumerManifest, clientModules, staleTime, segmentTasks, onCompletedProcessingRouteTree }) {
    // We're currently rendering a Flight response for the route tree prefetch.
    // Inside this component, decode the Flight stream for the whole page. This is
    // a hack to transfer the side effects from the original Flight stream (e.g.
    // Float preloads) onto the Flight stream for the tree prefetch.
    // TODO: React needs a better way to do this. Needed for Server Actions, too.
    const initialRSCPayload = await createFromReadableStream(createUnclosingPrefetchStream(streamFromBuffer(fullPageDataBuffer)), {
        findSourceMapURL,
        serverConsumerManifest
    });
    const buildId = initialRSCPayload.b;
    // FlightDataPath is an unsound type, hence the additional checks.
    const flightDataPaths = initialRSCPayload.f;
    if (flightDataPaths.length !== 1 && flightDataPaths[0].length !== 3) {
        console.error('Internal Next.js error: InitialRSCPayload does not match the expected ' + 'shape for a prerendered page during segment prefetch generation.');
        return null;
    }
    const flightRouterState = flightDataPaths[0][0];
    const seedData = flightDataPaths[0][1];
    const head = flightDataPaths[0][2];
    // Compute the route metadata tree by traversing the FlightRouterState. As we
    // walk the tree, we will also spawn a task to produce a prefetch response for
    // each segment.
    const tree = collectSegmentDataImpl(isClientParamParsingEnabled, flightRouterState, buildId, seedData, clientModules, ROOT_SEGMENT_REQUEST_KEY, segmentTasks);
    const isHeadPartial = await isPartialRSCData(head, clientModules);
    // Notify the abort controller that we're done processing the route tree.
    // Anything async that happens after this point must be due to hanging
    // promises in the original stream.
    onCompletedProcessingRouteTree();
    // Render the route tree to a special `/_tree` segment.
    const treePrefetch = {
        buildId,
        tree,
        head,
        isHeadPartial,
        staleTime
    };
    return treePrefetch;
}
function collectSegmentDataImpl(isClientParamParsingEnabled, route, buildId, seedData, clientModules, requestKey, segmentTasks) {
    // Metadata about the segment. Sent as part of the tree prefetch. Null if
    // there are no children.
    let slotMetadata = null;
    const children = route[1];
    const seedDataChildren = seedData !== null ? seedData[2] : null;
    for(const parallelRouteKey in children){
        const childRoute = children[parallelRouteKey];
        const childSegment = childRoute[0];
        const childSeedData = seedDataChildren !== null ? seedDataChildren[parallelRouteKey] : null;
        const childRequestKey = appendSegmentRequestKeyPart(requestKey, parallelRouteKey, createSegmentRequestKeyPart(childSegment));
        const childTree = collectSegmentDataImpl(isClientParamParsingEnabled, childRoute, buildId, childSeedData, clientModules, childRequestKey, segmentTasks);
        if (slotMetadata === null) {
            slotMetadata = {};
        }
        slotMetadata[parallelRouteKey] = childTree;
    }
    if (seedData !== null) {
        // Spawn a task to write the segment data to a new Flight stream.
        segmentTasks.push(// Since we're already in the middle of a render, wait until after the
        // current task to escape the current rendering context.
        waitAtLeastOneReactRenderTask().then(()=>renderSegmentPrefetch(buildId, seedData, requestKey, clientModules)));
    } else {
    // This segment does not have any seed data. Skip generating a prefetch
    // response for it. We'll still include it in the route tree, though.
    // TODO: We should encode in the route tree whether a segment is missing
    // so we don't attempt to fetch it for no reason. As of now this shouldn't
    // ever happen in practice, though.
    }
    const segment = route[0];
    let name;
    let paramType = null;
    let paramKey = null;
    if (typeof segment === 'string') {
        name = segment;
        paramKey = segment;
        paramType = null;
    } else {
        name = segment[0];
        paramKey = segment[1];
        paramType = segment[2];
    }
    // Metadata about the segment. Sent to the client as part of the
    // tree prefetch.
    return {
        name,
        paramType,
        // This value is ommitted from the prefetch response when clientParamParsing
        // is enabled. The flag only exists while we're testing the feature, in
        // case there's a bug and we need to revert.
        // TODO: Remove once clientParamParsing is enabled everywhere.
        paramKey: isClientParamParsingEnabled ? null : paramKey,
        slots: slotMetadata,
        isRootLayout: route[4] === true
    };
}
async function renderSegmentPrefetch(buildId, seedData, requestKey, clientModules) {
    // Render the segment data to a stream.
    // In the future, this is where we can include additional metadata, like the
    // stale time and cache tags.
    const rsc = seedData[1];
    const loading = seedData[3];
    const segmentPrefetch = {
        buildId,
        rsc,
        loading,
        isPartial: await isPartialRSCData(rsc, clientModules)
    };
    // Since all we're doing is decoding and re-encoding a cached prerender, if
    // it takes longer than a microtask, it must because of hanging promises
    // caused by dynamic data. Abort the stream at the end of the current task.
    const abortController = new AbortController();
    waitAtLeastOneReactRenderTask().then(()=>abortController.abort());
    const { prelude: segmentStream } = await prerender(segmentPrefetch, clientModules, {
        filterStackFrame,
        signal: abortController.signal,
        onError: onSegmentPrerenderError
    });
    const segmentBuffer = await streamToBuffer(segmentStream);
    if (requestKey === ROOT_SEGMENT_REQUEST_KEY) {
        return [
            '/_index',
            segmentBuffer
        ];
    } else {
        return [
            requestKey,
            segmentBuffer
        ];
    }
}
async function isPartialRSCData(rsc, clientModules) {
    // We can determine if a segment contains only partial data if it takes longer
    // than a task to encode, because dynamic data is encoded as an infinite
    // promise. We must do this in a separate Flight prerender from the one that
    // actually generates the prefetch stream because we need to include
    // `isPartial` in the stream itself.
    let isPartial = false;
    const abortController = new AbortController();
    waitAtLeastOneReactRenderTask().then(()=>{
        // If we haven't yet finished the outer task, then it must be because we
        // accessed dynamic data.
        isPartial = true;
        abortController.abort();
    });
    await prerender(rsc, clientModules, {
        filterStackFrame,
        signal: abortController.signal,
        onError () {},
        onPostpone () {
            // If something postponed, i.e. when Cache Components is not enabled, we can
            // infer that the RSC data is partial.
            isPartial = true;
        }
    });
    return isPartial;
}
function createUnclosingPrefetchStream(originalFlightStream) {
    // When PPR is enabled, prefetch streams may contain references that never
    // resolve, because that's how we encode dynamic data access. In the decoded
    // object returned by the Flight client, these are reified into hanging
    // promises that suspend during render, which is effectively what we want.
    // The UI resolves when it switches to the dynamic data stream
    // (via useDeferredValue(dynamic, static)).
    //
    // However, the Flight implementation currently errors if the server closes
    // the response before all the references are resolved. As a cheat to work
    // around this, we wrap the original stream in a new stream that never closes,
    // and therefore doesn't error.
    const reader = originalFlightStream.getReader();
    return new ReadableStream({
        async pull (controller) {
            while(true){
                const { done, value } = await reader.read();
                if (!done) {
                    // Pass to the target stream and keep consuming the Flight response
                    // from the server.
                    controller.enqueue(value);
                    continue;
                }
                // The server stream has closed. Exit, but intentionally do not close
                // the target stream.
                return;
            }
        }
    });
}

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