Function createRenderNodeFunction

packages/remix/src/build-legacy.ts:650–715

(
  nodeVersion: NodeVersion,
  entrypointDir: string,
  rootDir: string,
  serverBuildPath: string,
  serverEntryPoint: string | undefined,
  remixVersion: string,
  config: ResolvedNodeRouteConfig
)

}

async function createRenderNodeFunction(
  nodeVersion: NodeVersion,
  entrypointDir: string,
  rootDir: string,
  serverBuildPath: string,
  serverEntryPoint: string | undefined,
  remixVersion: string,
  config: ResolvedNodeRouteConfig
): Promise<NodejsLambda> {
  const files: Files = {};

  let handler = relative(rootDir, serverBuildPath);
  let handlerPath = join(rootDir, handler);
  if (!serverEntryPoint) {
    const baseServerBuildPath = basename(serverBuildPath, '.js');
    handler = join(dirname(handler), `server-${baseServerBuildPath}.mjs`);
    handlerPath = join(rootDir, handler);

    // Copy the `server-node.mjs` file into the "build" directory
    const nodeServerSrc = await nodeServerSrcPromise;
    await writeEntrypointFile(
      handlerPath,
      nodeServerSrc.replace(
        '@remix-run/dev/server-build',
        `./${baseServerBuildPath}.js`
      ),
      rootDir
    );
  }

  // Trace the handler with `@vercel/nft`
  const trace = await nodeFileTrace([handlerPath], {
    base: rootDir,
    processCwd: entrypointDir,
  });

  for (const warning of trace.warnings) {
    debug(`Warning from trace: ${warning.message}`);
  }

  for (const file of trace.fileList) {
    files[file] = await FileFsRef.fromFsPath({ fsPath: join(rootDir, file) });
  }

  const fn = new NodejsLambda({
    files,
    handler,
    runtime: nodeVersion.runtime,
    shouldAddHelpers: false,
    shouldAddSourcemapSupport: false,
    operationType: 'SSR',
    supportsResponseStreaming: true,
    regions: config.regions,
    memory: config.memory,
    maxDuration: config.maxDuration,
    framework: {
      slug: 'remix',
      version: remixVersion,