Fix NextRequest constructor parameters (#52001)

FIx the type change introduced in #51727

packages/next/src/server/web/spec-extension/request.ts

@@ -16,7 +16,7 @@ export class NextRequest extends Request {
     nextUrl: NextURL
   }
 
-  constructor(input: URL | RequestInfo, init: RequestInit) {
+  constructor(input: URL | RequestInfo, init: RequestInit = {}) {
     const url =
       typeof input !== 'string' && 'url' in input ? input.url : String(input)
     validateURL(url)

test/unit/web-runtime/next-request.test.ts

@@ -0,0 +1,23 @@
+/**
+ * @jest-environment @edge-runtime/jest-environment
+ */
+
+import { expectTypeOf } from 'expect-type'
+import { NextRequest } from 'next/src/server/web/spec-extension/request'
+
+it('should have 1 required parameter for constructor', () => {
+  expect(NextRequest.length).toBe(1)
+})
+
+it('should allow the 2nd parameter to be undefined', () => {
+  const request = new NextRequest('https://vercel.com')
+  expectTypeOf(request).toMatchTypeOf<NextRequest>()
+
+  expect(
+    new NextRequest('https://vercel.com', { geo: { city: 'Mars' } })
+  ).toHaveProperty('geo.city', 'Mars')
+  expect(new NextRequest('https://vercel.com')).toHaveProperty(
+    'nextUrl.pathname',
+    '/'
+  )
+})