fixup: restore support for Node18

Author: vicb

.github/actions/pnpm-setup/action.yml

@@ -6,9 +6,9 @@ runs:
   steps:
     # Install nodejs. https://github.com/actions/setup-node
     - name: Setup Node.js
-      uses: actions/setup-node@v5
+      uses: actions/setup-node@v4
       with:
-        node-version: 20.x
+        node-version: 18.x
 
     # Install pnpm. https://github.com/pnpm/action-setup
     - uses: pnpm/action-setup@v4

.github/workflows/e2e.yml

@@ -90,11 +90,11 @@ jobs:
         with:
           version: 9
 
-      - name: Set up NodeJS v20
-        uses: actions/setup-node@v5
+      - name: Set up NodeJS v18
+        uses: actions/setup-node@v4
         with:
           cache: pnpm # cache pnpm store
-          node-version: 20.19.5
+          node-version: 18.18.2
 
       - name: Install packages
         run: pnpm install

.github/workflows/pre-release.yml

@@ -20,7 +20,7 @@ jobs:
         uses: actions/checkout@v4
 
       # Setup .npmrc file to publish to npm
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v4
         with:
           registry-url: "https://registry.npmjs.org"
 

.github/workflows/v2-release.yml

@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@v4
 
       # Setup .npmrc file to publish to npm
-      - uses: actions/setup-node@v5
+      - uses: actions/setup-node@v4
         with:
           registry-url: "https://registry.npmjs.org"
 

packages/open-next/src/core/routing/util.ts

@@ -105,14 +105,14 @@ export function convertRes(res: OpenNextNodeResponse): InternalResult {
   const isBase64Encoded =
     isBinaryContentType(headers["content-type"]) ||
     !!headers["content-encoding"];
-  const body =
-    res._chunks == null
-      ? new ReadableStream({
-          start(controller) {
-            controller.close();
-          },
-        })
-      : ReadableStream.from(res._chunks);
+  const body = new ReadableStream({
+    start(controller) {
+      for (const chunk of res._chunks ?? []) {
+        controller.enqueue(chunk);
+      }
+      controller.close();
+    },
+  });
   return {
     type: "core",
     statusCode,