Add res.redirect response helper

packages/next/next-server/lib/utils.ts

@@ -207,7 +207,7 @@ export type NextApiResponse<T = any> = ServerResponse & {
    */
   json: Send<T>
   status: (statusCode: number) => NextApiResponse<T>
-  redirect: (url: string, statusCode?: number) => NextApiResponse<T>
+  redirect: (status: string | number, url: string) => NextApiResponse<T>
 
   /**
    * Set preview data for Next.js' prerender mode

packages/next/next-server/server/api-utils.ts

@@ -59,7 +59,7 @@ export async function apiResolver(
     apiRes.status = (statusCode) => sendStatusCode(apiRes, statusCode)
     apiRes.send = (data) => sendData(apiReq, apiRes, data)
     apiRes.json = (data) => sendJson(apiRes, data)
-    apiRes.redirect = (url, statusCode) => redirect(apiRes, url, statusCode)
+    apiRes.redirect = (status, url) => redirect(apiRes, status, url)
     apiRes.setPreviewData = (data, options = {}) =>
       setPreviewData(apiRes, data, Object.assign({}, apiContext, options))
     apiRes.clearPreviewData = () => clearPreviewData(apiRes)
@@ -213,15 +213,21 @@ export function sendStatusCode(
 /**
  *
  * @param res response object
+ * @param [status] `HTTP` status code of redirect
  * @param url URL of redirect
- * @param [statusCode] `HTTP` status code of redirect
  */
 export function redirect(
   res: NextApiResponse,
-  url: string,
-  statusCode?: number
+  status: string | number, // If this is a number it's the URL
+  url: string
 ): NextApiResponse<any> {
-  res.writeHead(statusCode || 302, { Location: url }).end()
+  if (typeof status === 'string') {
+    url = status
+    status = 302
+  }
+
+  res.writeHead(status, { Location: url })
+  res.end()
   return res
 }
 

test/integration/prerender/next.config.js

@@ -1,5 +1,4 @@
 module.exports = {
-  target: 'serverless',
   rewrites() {
     return [
       {

test/integration/prerender/pages/blog/[post]/index.js

@@ -1,7 +1,7 @@
 import React from 'react'
 import Link from 'next/link'
 import { useRouter } from 'next/router'
-// import 'firebase/firestore'
+import 'firebase/firestore'
 
 export async function getStaticPaths() {
   return {