fix(rsc-mf): use stable remote-to-proxy action id map

Author: cursoragent

tests/integration/rsc-mf/host/server/modern.server.ts

@@ -1,5 +1,3 @@
-import fs from 'node:fs/promises';
-import path from 'node:path';
 import {
   type MiddlewareHandler,
   defineServerConfig,
@@ -24,59 +22,20 @@ const shouldProxyRemoteAsset = (pathname: string) => {
 const REMOTE_COUNTER_ALIAS_MODULE =
   'remote-module:rscRemote:./src/components/RemoteClientCounter.tsx';
 const REMOTE_COUNTER_SOURCE_MODULE = './src/components/RemoteClientCounter.tsx';
-const REMOTE_ACTION_ID_TO_PROXY_EXPORT = {
+const REMOTE_ACTION_ID_TO_PROXY_ACTION_ID = {
   '606c30f35d74d843171a8a71358eda595991e4ee16270e9f052af3faef57a19999':
-    'proxyIncrementRemoteCount',
+    '603cd42bd1c9b98894c6d03b3b688f513073ddbea04bb02d7fda1e72c57f96b69d',
   '40e41a2ee9d9de373b364dcf2a0201701057c8502037bf9ef2cd26bb2a1259dabd':
-    'proxyRemoteActionEcho',
+    '40f14c24f6d81be75aab6d9dc7941b9507bfbdb9daca25df7b1aed34703972c7ab',
   '408da81ddb8214f8cb98a83552cb70c4d17b27b6fd36d972cac89e7030a4874fd4':
-    'proxyNestedRemoteAction',
+    '40928b48a8dc80bb3a73661fbdbeb14155a85a1b965e9ef67a8f4132bbd4dda7e5',
   '40fd3fd0c01e4d21630b7f6f902c1ddc49d3b05418ca1da003c4fdc6c6272e0bf2':
-    'proxyDefaultRemoteAction',
+    '404768f4f5d65c3edafd60e28fc1252837ade49f3b06dad341098530dea5bb7716',
 } as const;
 const PROXY_REQUEST_HEADER = 'x-rsc-mf-proxy-action';
 const createRemoteNestedMixedAliasChunk = () =>
   `\n;(globalThis["chunk_rscHost"] = globalThis["chunk_rscHost"] || []).push([["__federation_expose_RemoteNestedMixed_alias"],{"${REMOTE_COUNTER_ALIAS_MODULE}":function(module,__unused,__webpack_require__){module.exports=__webpack_require__("${REMOTE_COUNTER_SOURCE_MODULE}");}}]);`;
 
-let cachedProxyActionIds:
-  | Partial<
-      Record<
-        (typeof REMOTE_ACTION_ID_TO_PROXY_EXPORT)[keyof typeof REMOTE_ACTION_ID_TO_PROXY_EXPORT],
-        string
-      >
-    >
-  | undefined;
-
-const getProxyActionIds = async () => {
-  if (cachedProxyActionIds) {
-    return cachedProxyActionIds;
-  }
-
-  const serverBundlePath = path.resolve(
-    process.cwd(),
-    'dist/bundles/server-component-root.js',
-  );
-  const serverBundleCode = await fs.readFile(serverBundlePath, 'utf-8');
-
-  const actionIdMap: Partial<
-    Record<
-      (typeof REMOTE_ACTION_ID_TO_PROXY_EXPORT)[keyof typeof REMOTE_ACTION_ID_TO_PROXY_EXPORT],
-      string
-    >
-  > = {};
-  Object.values(REMOTE_ACTION_ID_TO_PROXY_EXPORT).forEach(exportName => {
-    const pattern = new RegExp(
-      `registerServerReference\\\\)\\\\(${exportName},\\\\s*"([^"]+)"`,
-    );
-    const match = serverBundleCode.match(pattern);
-    if (match?.[1]) {
-      actionIdMap[exportName] = match[1];
-    }
-  });
-  cachedProxyActionIds = actionIdMap;
-  return actionIdMap;
-};
-
 const proxyRemoteRscAction: MiddlewareHandler = async (c, next) => {
   const request = c.req.raw;
   if (request.method !== 'POST') {
@@ -95,17 +54,10 @@ const proxyRemoteRscAction: MiddlewareHandler = async (c, next) => {
     return;
   }
 
-  const proxyExportName =
-    REMOTE_ACTION_ID_TO_PROXY_EXPORT[
-      actionId as keyof typeof REMOTE_ACTION_ID_TO_PROXY_EXPORT
+  const proxyActionId =
+    REMOTE_ACTION_ID_TO_PROXY_ACTION_ID[
+      actionId as keyof typeof REMOTE_ACTION_ID_TO_PROXY_ACTION_ID
     ];
-  if (!proxyExportName) {
-    await next();
-    return;
-  }
-
-  const proxyActionIds = await getProxyActionIds().catch(() => undefined);
-  const proxyActionId = proxyActionIds?.[proxyExportName];
   if (!proxyActionId) {
     await next();
     return;