next/dist/esm/export/routes/app-route.js

The React Framework

import { INFINITE_CACHE, NEXT_BODY_SUFFIX, NEXT_CACHE_TAGS_HEADER, NEXT_META_SUFFIX } from '../../lib/constants';
import { NodeNextRequest } from '../../server/base-http/node';
import { NextRequestAdapter, signalFromNodeResponse } from '../../server/web/spec-extension/adapters/next-request';
import { toNodeOutgoingHttpHeaders } from '../../server/web/utils';
import { isDynamicUsageError } from '../helpers/is-dynamic-usage-error';
import { hasNextSupport } from '../../server/ci-info';
import { isStaticGenEnabled } from '../../server/route-modules/app-route/helpers/is-static-gen-enabled';
import { isMetadataRouteFile } from '../../lib/metadata/is-metadata-route';
import { normalizeAppPath } from '../../shared/lib/router/utils/app-paths';
import { AfterRunner } from '../../server/after/run-with-after';
export var ExportedAppRouteFiles = /*#__PURE__*/ function(ExportedAppRouteFiles) {
    ExportedAppRouteFiles["BODY"] = "BODY";
    ExportedAppRouteFiles["META"] = "META";
    return ExportedAppRouteFiles;
}({});
export async function exportAppRoute(req, res, params, page, module, incrementalCache, cacheLifeProfiles, htmlFilepath, fileWriter, experimental, buildId) {
    // Ensure that the URL is absolute.
    req.url = `http://localhost:3000${req.url}`;
    // Adapt the request and response to the Next.js request and response.
    const request = NextRequestAdapter.fromNodeNextRequest(new NodeNextRequest(req), signalFromNodeResponse(res));
    const afterRunner = new AfterRunner();
    // Create the context for the handler. This contains the params from
    // the route and the context for the request.
    const context = {
        params,
        prerenderManifest: {
            version: 4,
            routes: {},
            dynamicRoutes: {},
            preview: {
                previewModeEncryptionKey: '',
                previewModeId: '',
                previewModeSigningKey: ''
            },
            notFoundRoutes: []
        },
        renderOpts: {
            experimental,
            nextExport: true,
            supportsDynamicResponse: false,
            incrementalCache,
            waitUntil: afterRunner.context.waitUntil,
            onClose: afterRunner.context.onClose,
            onAfterTaskError: afterRunner.context.onTaskError,
            cacheLifeProfiles
        },
        sharedContext: {
            buildId
        }
    };
    if (hasNextSupport) {
        context.renderOpts.isRevalidate = true;
    }
    try {
        const userland = module.userland;
        // we don't bail from the static optimization for
        // metadata routes
        const normalizedPage = normalizeAppPath(page);
        const isMetadataRoute = isMetadataRouteFile(normalizedPage, [], false);
        if (!isStaticGenEnabled(userland) && !isMetadataRoute && // We don't disable static gen when dynamicIO is enabled because we
        // expect that anything dynamic in the GET handler will make it dynamic
        // and thus avoid the cache surprises that led to us removing static gen
        // unless specifically opted into
        experimental.dynamicIO !== true) {
            return {
                cacheControl: {
                    revalidate: 0,
                    expire: undefined
                }
            };
        }
        const response = await module.handle(request, context);
        const isValidStatus = response.status < 400 || response.status === 404;
        if (!isValidStatus) {
            return {
                cacheControl: {
                    revalidate: 0,
                    expire: undefined
                }
            };
        }
        const blob = await response.blob();
        // TODO(after): if we abort a prerender because of an error in an after-callback
        // we should probably communicate that better (and not log the error twice)
        await afterRunner.executeAfter();
        const revalidate = typeof context.renderOpts.collectedRevalidate === 'undefined' || context.renderOpts.collectedRevalidate >= INFINITE_CACHE ? false : context.renderOpts.collectedRevalidate;
        const expire = typeof context.renderOpts.collectedExpire === 'undefined' || context.renderOpts.collectedExpire >= INFINITE_CACHE ? undefined : context.renderOpts.collectedExpire;
        const headers = toNodeOutgoingHttpHeaders(response.headers);
        const cacheTags = context.renderOpts.collectedTags;
        if (cacheTags) {
            headers[NEXT_CACHE_TAGS_HEADER] = cacheTags;
        }
        if (!headers['content-type'] && blob.type) {
            headers['content-type'] = blob.type;
        }
        // Writing response body to a file.
        const body = Buffer.from(await blob.arrayBuffer());
        fileWriter.append(htmlFilepath.replace(/\.html$/, NEXT_BODY_SUFFIX), body);
        // Write the request metadata to a file.
        const meta = {
            status: response.status,
            headers
        };
        fileWriter.append(htmlFilepath.replace(/\.html$/, NEXT_META_SUFFIX), JSON.stringify(meta));
        return {
            cacheControl: {
                revalidate,
                expire
            },
            metadata: meta
        };
    } catch (err) {
        if (!isDynamicUsageError(err)) {
            throw err;
        }
        return {
            cacheControl: {
                revalidate: 0,
                expire: undefined
            }
        };
    }
}

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