Fix: disable script worker in edge and fix rsc loader and runtime (#35604)

* Disable script worker for edge runtime (could lead to build error)
* Fix rsc loader CJS detection
* Fix pagePath searching for per-page runtime

test through rsc notes demo, successful deployment: https://next-rsc-notes-9bix7l1nu.vercel.sh/

packages/next/build/index.ts

@@ -960,8 +960,10 @@ export default async function build(
             let ssgPageRoutes: string[] | null = null
             let isMiddlewareRoute = !!page.match(MIDDLEWARE_ROUTE)
 
-            const pagePath = pagePaths.find((_path) =>
-              _path.startsWith(actualPage + '.')
+            const pagePath = pagePaths.find(
+              (p) =>
+                p.startsWith(actualPage + '.') ||
+                p.startsWith(actualPage + '/index.')
             )
             const pageRuntime =
               hasConcurrentFeatures && pagePath
@@ -974,7 +976,7 @@ export default async function build(
             if (
               !isMiddlewareRoute &&
               !isReservedPage(page) &&
-              // We currently don't support staic optimization in the Edge runtime.
+              // We currently don't support static optimization in the Edge runtime.
               pageRuntime !== 'edge'
             ) {
               try {

packages/next/build/webpack-config.ts

@@ -981,6 +981,7 @@ export default async function getBaseWebpackConfig(
           ...(isEdgeRuntime
             ? [
                 {
+                  '@builder.io/partytown': '{}',
                   'next/dist/compiled/etag': '{}',
                   'next/dist/compiled/chalk': '{}',
                   'react-dom': '{}',

packages/next/build/webpack/loaders/utils.ts

@@ -14,6 +14,7 @@ export function buildExports(moduleExports: any, isESM: boolean) {
 
 const esmNodeTypes = [
   'ImportDeclaration',
+  'ExportDeclaration',
   'ExportNamedDeclaration',
   'ExportDefaultExpression',
   'ExportDefaultDeclaration',

packages/next/pages/_document.tsx

@@ -79,7 +79,8 @@ function hasComponentProps(child: any): child is React.ReactElement {
 function getPreNextWorkerScripts(context: HtmlProps, props: OriginProps) {
   const { assetPrefix, scriptLoader, crossOrigin, nextScriptWorkers } = context
 
-  if (!nextScriptWorkers) return null
+  // disable `nextScriptWorkers` in edge runtime
+  if (!nextScriptWorkers || process.browser) return null
 
   try {
     let {