fix(nextjs): Use named imports for fetch runtime polyfill

Next14 seems to have changed the way it handles default exports when using the webpack bundler for some of their build variants when using `npm run dev`. This commit ensures that we no longer use the default export in an effort to improve compat between the different nextjs versions.

 More information can be found here: https://esbuild.github.io/content-types/#default-interop
 and here: #612

packages/backend/src/runtime/browser/fetch.mjs

@@ -5,3 +5,4 @@ export const RuntimeHeaders = Headers;
 export const RuntimeRequest = Request;
 export const RuntimeResponse = Response;
 export const RuntimeAbortController = AbortController;
+export const RuntimeFetch = fetch;

packages/backend/src/runtime/index.ts

@@ -15,12 +15,17 @@
 // @ts-ignore - These are package subpaths
 import crypto from '#crypto';
 // @ts-ignore - These are package subpaths
-import fetch from '#fetch';
-// @ts-ignore - These are package subpaths
 import * as fetchApisPolyfill from '#fetch';
 
-const { RuntimeAbortController, RuntimeBlob, RuntimeFormData, RuntimeHeaders, RuntimeRequest, RuntimeResponse } =
-  fetchApisPolyfill;
+const {
+  RuntimeFetch,
+  RuntimeAbortController,
+  RuntimeBlob,
+  RuntimeFormData,
+  RuntimeHeaders,
+  RuntimeRequest,
+  RuntimeResponse,
+} = fetchApisPolyfill;
 
 type Runtime = {
   crypto: Crypto;
@@ -39,7 +44,7 @@ type Runtime = {
 // The globalThis object is supported for Node >= 12.0.
 //
 // https://github.com/supabase/supabase/issues/4417
-const globalFetch = fetch.bind(globalThis);
+const globalFetch = RuntimeFetch.bind(globalThis);
 // DO NOT CHANGE: Runtime needs to be imported as a default export so that we can stub its dependencies with Sinon.js
 // For more information refer to https://sinonjs.org/how-to/stub-dependency/
 const runtime: Runtime = {

packages/backend/src/runtime/node/fetch.js

@@ -8,3 +8,4 @@ module.exports.RuntimeHeaders = Headers;
 module.exports.RuntimeRequest = Request;
 module.exports.RuntimeResponse = Response;
 module.exports.RuntimeAbortController = AbortController;
+module.exports.RuntimeFetch = fetch;