next/dist/esm/server/app-render/action-utils.js

The React Framework

import { normalizeAppPath } from '../../shared/lib/router/utils/app-paths';
import { pathHasPrefix } from '../../shared/lib/router/utils/path-has-prefix';
import { removePathPrefix } from '../../shared/lib/router/utils/remove-path-prefix';
import { workAsyncStorage } from './work-async-storage.external';
// This function creates a Flight-acceptable server module map proxy from our
// Server Reference Manifest similar to our client module map.
// This is because our manifest contains a lot of internal Next.js data that
// are relevant to the runtime, workers, etc. that React doesn't need to know.
export function createServerModuleMap({ serverActionsManifest }) {
    return new Proxy({}, {
        get: (_, id)=>{
            var _serverActionsManifest__id, _serverActionsManifest_;
            const workers = (_serverActionsManifest_ = serverActionsManifest[process.env.NEXT_RUNTIME === 'edge' ? 'edge' : 'node']) == null ? void 0 : (_serverActionsManifest__id = _serverActionsManifest_[id]) == null ? void 0 : _serverActionsManifest__id.workers;
            if (!workers) {
                return undefined;
            }
            const workStore = workAsyncStorage.getStore();
            let workerEntry;
            if (workStore) {
                workerEntry = workers[normalizeWorkerPageName(workStore.page)];
            } else {
                // If there's no work store defined, we can assume that a server
                // module map is needed during module evaluation, e.g. to create a
                // server action using a higher-order function. Therefore it should be
                // safe to return any entry from the manifest that matches the action
                // ID. They all refer to the same module ID, which must also exist in
                // the current page bundle. TODO: This is currently not guaranteed in
                // Turbopack, and needs to be fixed.
                workerEntry = Object.values(workers).at(0);
            }
            if (!workerEntry) {
                return undefined;
            }
            const { moduleId, async } = workerEntry;
            return {
                id: moduleId,
                name: id,
                chunks: [],
                async
            };
        }
    });
}
/**
 * Checks if the requested action has a worker for the current page.
 * If not, it returns the first worker that has a handler for the action.
 */ export function selectWorkerForForwarding(actionId, pageName, serverActionsManifest) {
    var _serverActionsManifest__actionId;
    const workers = (_serverActionsManifest__actionId = serverActionsManifest[process.env.NEXT_RUNTIME === 'edge' ? 'edge' : 'node'][actionId]) == null ? void 0 : _serverActionsManifest__actionId.workers;
    const workerName = normalizeWorkerPageName(pageName);
    // no workers, nothing to forward to
    if (!workers) return;
    // if there is a worker for this page, no need to forward it.
    if (workers[workerName]) {
        return;
    }
    // otherwise, grab the first worker that has a handler for this action id
    return denormalizeWorkerPageName(Object.keys(workers)[0]);
}
/**
 * The flight entry loader keys actions by bundlePath.
 * bundlePath corresponds with the relative path (including 'app') to the page entrypoint.
 */ function normalizeWorkerPageName(pageName) {
    if (pathHasPrefix(pageName, 'app')) {
        return pageName;
    }
    return 'app' + pageName;
}
/**
 * Converts a bundlePath (relative path to the entrypoint) to a routable page name
 */ function denormalizeWorkerPageName(bundlePath) {
    return normalizeAppPath(removePathPrefix(bundlePath, 'app'));
}

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