fix: add shim for require('node:buffer') (#2050)

* fix: add buffer require shim

* chore: add comment for buffer require shim

* feat: shim additional native modules

---------

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

Author: orinokai

packages/runtime/src/templates/edge/shims.js

@@ -1,7 +1,11 @@
 // @ts-check
-// deno-lint-ignore-file no-var prefer-const no-unused-vars no-explicit-any
+// deno-lint-ignore-file prefer-const no-unused-vars
 import { decode as _base64Decode } from 'https://deno.land/[email protected]/encoding/base64.ts'
-import { AsyncLocalStorage as ALSCompat } from 'https://deno.land/[email protected]/node/async_hooks.ts'
+import BufferCompat from 'https://deno.land/[email protected]/node/buffer.ts'
+import EventsCompat from 'https://deno.land/[email protected]/node/events.ts'
+import AsyncHooksCompat from 'https://deno.land/[email protected]/node/async_hooks.ts'
+import AssertCompat from 'https://deno.land/[email protected]/node/assert.ts'
+import UtilCompat from 'https://deno.land/[email protected]/node/util.ts'
 
 /**
  * These are the shims, polyfills and other kludges to make Next.js work in standards-compliant runtime.
@@ -18,7 +22,7 @@ globalThis.EdgeRuntime = 'netlify-edge'
 let _ENTRIES = {}
 
 // Next.js expects this as a global
-globalThis.AsyncLocalStorage = ALSCompat
+globalThis.AsyncLocalStorage = AsyncHooksCompat.AsyncLocalStorage
 
 // Next.js uses this extension to the Headers API implemented by Cloudflare workerd
 if (!('getAll' in Headers.prototype)) {
@@ -48,6 +52,26 @@ const fetch /* type {typeof globalThis.fetch} */ = async (url, init) => {
   }
 }
 
+// Shim native modules that Vercel makes available
+if (typeof require === 'undefined') {
+  globalThis.require = (name) => {
+    switch (name.replace(/^node:/, '')) {
+      case 'buffer':
+        return BufferCompat
+      case 'events':
+        return EventsCompat
+      case 'async_hooks':
+        return AsyncHooksCompat
+      case 'assert':
+        return AssertCompat
+      case 'util':
+        return UtilCompat
+      default:
+        throw new ReferenceError(`Native module not found: ${name}`)
+    }
+  }
+}
+
 // Next edge runtime uses "self" as a function-scoped global-like object, but some of the older polyfills expect it to equal globalThis
 // See https://nextjs.org/docs/basic-features/supported-browsers-features#polyfills
 const self = { ...globalThis, fetch }