chore: use old cf TextEncoderStream

packages/qwik-city/middleware/bun/index.ts

@@ -20,7 +20,7 @@ import { join, extname } from 'node:path';
 export function createQwikCity(opts: QwikCityBunOptions) {
   // @builder.io/qwik-city/middleware/bun
   // still missing from bun: last check was bun version 1.1.8
-  globalThis.TextEncoderStream ||= class TextEncoderStream extends _TextEncoderStream_polyfill {};
+  globalThis.TextEncoderStream ||= _TextEncoderStream_polyfill;
 
   const qwikSerializer = {
     _deserializeData,

packages/qwik-city/middleware/cloudflare-pages/index.ts

@@ -5,7 +5,7 @@ import type {
 import {
   mergeHeadersCookies,
   requestHandler,
-  _TextEncoderStream_polyfill,
+  _TextEncoderStream_polyfill2,
 } from '@builder.io/qwik-city/middleware/request-handler';
 import { getNotFound } from '@qwik-city-not-found-paths';
 import { isStaticPath } from '@qwik-city-static-paths';
@@ -22,7 +22,7 @@ export function createQwikCity(opts: QwikCityCloudflarePagesOptions) {
     new globalThis.TextEncoderStream();
   } catch (e) {
     // @ts-ignore
-    globalThis.TextEncoderStream = class TextEncoderStream extends _TextEncoderStream_polyfill {};
+    globalThis.TextEncoderStream = _TextEncoderStream_polyfill2;
   }
   const qwikSerializer = {
     _deserializeData,

packages/qwik-city/middleware/request-handler/api.md

@@ -233,6 +233,17 @@ export class _TextEncoderStream_polyfill {
     get writable(): WritableStream<string>;
 }
 
+// @internal (undocumented)
+export class _TextEncoderStream_polyfill2 {
+    constructor();
+    // (undocumented)
+    readable: any;
+    // (undocumented)
+    writable: any;
+    // (undocumented)
+    _writer: any;
+}
+
 // (No @packageDocumentation comment for this package)
 
 ```

packages/qwik-city/middleware/request-handler/index.ts

@@ -2,7 +2,7 @@ export { getErrorHtml, ServerError } from './error-handler';
 export { mergeHeadersCookies } from './cookie';
 export { AbortMessage, RedirectMessage } from './redirect-handler';
 export { requestHandler } from './request-handler';
-export { _TextEncoderStream_polyfill } from './polyfill';
+export { _TextEncoderStream_polyfill, _TextEncoderStream_polyfill2 } from './polyfill';
 export type {
   CacheControl,
   Cookie,

packages/qwik-city/middleware/request-handler/polyfill.ts

@@ -73,3 +73,39 @@ export class _TextEncoderStream_polyfill {
     return 'TextEncoderStream';
   }
 }
+
+const resolved = Promise.resolve();
+/** @internal */
+export class _TextEncoderStream_polyfill2 {
+  // minimal polyfill implementation of TextEncoderStream
+  // since Cloudflare Pages doesn't support readable.pipeTo()
+  _writer: any;
+  readable: any;
+  writable: any;
+
+  constructor() {
+    this._writer = null;
+    this.readable = {
+      pipeTo: (writableStream: any) => {
+        this._writer = writableStream.getWriter();
+      },
+    };
+    this.writable = {
+      getWriter: () => {
+        if (!this._writer) {
+          throw new Error('No writable stream');
+        }
+        const encoder = new TextEncoder();
+        return {
+          write: async (chunk: any) => {
+            if (chunk != null) {
+              await this._writer.write(encoder.encode(chunk));
+            }
+          },
+          close: () => this._writer.close(),
+          ready: resolved,
+        };
+      },
+    };
+  }
+}