fix NextRequest proxy in edge runtime (#66551)

Properties such as the native `Headers` / `Cookies` on the `NextRequest`
proxy make use of internal slots, so passing `receiver` (the proxy
object) which does not have the internal slots on it causes an issue in
the edge runtime. Instead, we want to make sure that the target is the
native object. This is similar to
#47088.

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packages/next/src/server/route-modules/app-route/module.ts

@@ -55,6 +55,7 @@ import { cleanURL } from './helpers/clean-url'
 import { StaticGenBailoutError } from '../../../client/components/static-generation-bailout'
 import { isStaticGenEnabled } from './helpers/is-static-gen-enabled'
 import { trackDynamicDataAccessed } from '../../app-render/dynamic-rendering'
+import { ReflectAdapter } from '../../web/spec-extension/adapters/reflect'
 
 /**
  * The AppRouteModule is the type of the module exported by the bundled App
@@ -598,11 +599,7 @@ const forceStaticRequestHandlers = {
             ))
         )
       default:
-        const result = Reflect.get(target, prop, receiver)
-        if (typeof result === 'function') {
-          return result.bind(target)
-        }
-        return result
+        return ReflectAdapter.get(target, prop, receiver)
     }
   },
   // We don't need to proxy set because all the properties we proxy are ready only
@@ -649,11 +646,7 @@ const forceStaticNextUrlHandlers = {
             new Proxy(target.clone(), forceStaticNextUrlHandlers))
         )
       default:
-        const result = Reflect.get(target, prop, receiver)
-        if (typeof result === 'function') {
-          return result.bind(target)
-        }
-        return result
+        return ReflectAdapter.get(target, prop, receiver)
     }
   },
 }
@@ -677,11 +670,7 @@ function proxyNextRequest(
         case 'toString':
         case 'origin': {
           trackDynamicDataAccessed(staticGenerationStore, `nextUrl.${prop}`)
-          const result = Reflect.get(target, prop, receiver)
-          if (typeof result === 'function') {
-            return result.bind(target)
-          }
-          return result
+          return ReflectAdapter.get(target, prop, receiver)
         }
         case 'clone':
           return (
@@ -690,20 +679,15 @@ function proxyNextRequest(
               new Proxy(target.clone(), nextUrlHandlers))
           )
         default:
-          const result = Reflect.get(target, prop, receiver)
-          if (typeof result === 'function') {
-            return result.bind(target)
-          }
-          return result
+          return ReflectAdapter.get(target, prop, receiver)
       }
     },
   }
 
   const nextRequestHandlers = {
     get(
       target: NextRequest & RequestSymbolTarget,
-      prop: string | symbol,
-      receiver: any
+      prop: string | symbol
     ): unknown {
       switch (prop) {
         case 'nextUrl':
@@ -721,12 +705,10 @@ function proxyNextRequest(
         case 'arrayBuffer':
         case 'formData': {
           trackDynamicDataAccessed(staticGenerationStore, `request.${prop}`)
-
-          const result = Reflect.get(target, prop, receiver)
-          if (typeof result === 'function') {
-            return result.bind(target)
-          }
-          return result
+          // The receiver arg is intentionally the same as the target to fix an issue with
+          // edge runtime, where attempting to access internal slots with the wrong `this` context
+          // results in an error.
+          return ReflectAdapter.get(target, prop, target)
         }
         case 'clone':
           return (
@@ -745,11 +727,10 @@ function proxyNextRequest(
               ))
           )
         default:
-          const result = Reflect.get(target, prop, receiver)
-          if (typeof result === 'function') {
-            return result.bind(target)
-          }
-          return result
+          // The receiver arg is intentionally the same as the target to fix an issue with
+          // edge runtime, where attempting to access internal slots with the wrong `this` context
+          // results in an error.
+          return ReflectAdapter.get(target, prop, target)
       }
     },
     // We don't need to proxy set because all the properties we proxy are ready only
@@ -803,11 +784,7 @@ const requireStaticRequestHandlers = {
             ))
         )
       default:
-        const result = Reflect.get(target, prop, receiver)
-        if (typeof result === 'function') {
-          return result.bind(target)
-        }
-        return result
+        return ReflectAdapter.get(target, prop, receiver)
     }
   },
   // We don't need to proxy set because all the properties we proxy are ready only
@@ -838,11 +815,7 @@ const requireStaticNextUrlHandlers = {
             new Proxy(target.clone(), requireStaticNextUrlHandlers))
         )
       default:
-        const result = Reflect.get(target, prop, receiver)
-        if (typeof result === 'function') {
-          return result.bind(target)
-        }
-        return result
+        return ReflectAdapter.get(target, prop, receiver)
     }
   },
 }