feat: add support for redirect route rules

src/presets/netlify.ts

@@ -19,6 +19,12 @@ export const netlify = defineNitroPreset({
     async 'compiled' (nitro: Nitro) {
       const redirectsPath = join(nitro.options.output.publicDir, '_redirects')
       let contents = '/* /.netlify/functions/server 200'
+
+      for (const [key, value] of Object.entries(nitro.options.routes).filter(([_, value]) => value.redirect)) {
+        const redirect = typeof value.redirect === 'string' ? { to: value.redirect } : value.redirect
+        contents = `${key.replace('/**', '/*')}\t${redirect.to}\t${redirect.statusCode || 307}` + '\n' + contents
+      }
+
       if (existsSync(redirectsPath)) {
         const currentRedirects = await fsp.readFile(redirectsPath, 'utf-8')
         if (currentRedirects.match(/^\/\* /m)) {
@@ -28,6 +34,7 @@ export const netlify = defineNitroPreset({
         nitro.logger.info('Adding Nitro fallback to `_redirects` to handle all unmatched routes.')
         contents = currentRedirects + '\n' + contents
       }
+
       await fsp.writeFile(redirectsPath, contents)
 
       const serverCJSPath = join(nitro.options.output.serverDir, 'server.js')

src/presets/vercel.ts

@@ -82,6 +82,14 @@ function generateBuildConfig (nitro: Nitro) {
         )
     ),
     routes: [
+      ...Object.entries(nitro.options.routes).filter(([_, value]) => value.redirect).map(([key, value]) => {
+        const redirect = typeof value.redirect === 'string' ? { to: value.redirect } : value.redirect
+        return {
+          src: key.replace('/**', '/.*'),
+          status: redirect.statusCode || 307,
+          headers: { Location: redirect.to }
+        }
+      }),
       ...nitro.options.publicAssets
         .filter(asset => !asset.fallthrough)
         .map(asset => asset.baseURL)

src/runtime/app.ts

@@ -1,4 +1,4 @@
-import { App as H3App, createApp, createRouter, lazyEventHandler, Router } from 'h3'
+import { App as H3App, createApp, createRouter, eventHandler, lazyEventHandler, Router, sendRedirect } from 'h3'
 import { createFetch, Headers } from 'ohmyfetch'
 import destr from 'destr'
 import { createRouter as createMatcher } from 'radix3'
@@ -36,6 +36,13 @@ function createNitroApp (): NitroApp {
 
   const routerOptions = createMatcher({ routes: config.nitro.routes })
 
+  h3App.use(eventHandler((event) => {
+    const routeOptions = routerOptions.lookup(event.req.url) || {}
+    if (routeOptions.redirect) {
+      return sendRedirect(event, routeOptions.redirect.to || routeOptions.redirect, routeOptions.redirect.statusCode || 307)
+    }
+  }))
+
   for (const h of handlers) {
     let handler = h.lazy ? lazyEventHandler(h.handler) : h.handler
 

src/types/nitro.ts

@@ -68,7 +68,7 @@ export interface NitroConfig extends DeepPartial<NitroOptions> {
 
 export interface NitroRouteOption {
   swr?: boolean | number
-  redirect?: string
+  redirect?: string | { to: string, statusCode?: 307 | 308 }
 }
 
 export interface NitroRoutesOptions {