feat: re-use old flag, remove old typedRoutes code

Author: bgub

crates/next-core/src/next_config.rs

@@ -785,8 +785,7 @@ pub struct ExperimentalConfig {
     swc_trace_profiling: Option<bool>,
     /// @internal Used by the Next.js internals only.
     trust_host_header: Option<bool>,
-    /// Generate Route types and enable type checking for Link and Router.push,
-    /// etc. This option requires `appDir` to be enabled first.
+    /// Generate Route types and enable type checking for Link and Router.push, etc.
     /// @see [api reference](https://nextjs.org/docs/app/api-reference/next-config-js/typedRoutes)
     typed_routes: Option<bool>,
     url_imports: Option<serde_json::Value>,

docs/01-app/03-api-reference/05-config/01-next-config-js/typedRoutes.mdx

@@ -4,7 +4,7 @@ description: Enable experimental support for statically typed links.
 version: experimental
 ---
 
-Experimental support for [statically typed links](/docs/app/api-reference/config/typescript#statically-typed-links). This feature requires using the App Router as well as TypeScript in your project.
+Experimental support for [statically typed links](/docs/app/api-reference/config/typescript#statically-typed-links). This feature requires using TypeScript in your project.
 
 ```js filename="next.config.js"
 /** @type {import('next').NextConfig} */

docs/01-app/03-api-reference/08-turbopack.mdx

@@ -112,7 +112,6 @@ Some features are not yet implemented or not planned:
 - **`experimental.esmExternals`**
   Not planned. Turbopack does not support the legacy `esmExternals` configuration in Next.js.
 - **Some Next.js Experimental Flags**
-  - `experimental.typedRoutes`
   - `experimental.nextScriptWorkers`
   - `experimental.sri.algorithm`
   - `experimental.fallbackNodePolyfills`

packages/next/src/build/define-env.ts

@@ -273,8 +273,7 @@ export function getDefineEnv({
       config.experimental.webVitalsAttribution ?? false,
     'process.env.__NEXT_LINK_NO_TOUCH_START':
       config.experimental.linkNoTouchStart ?? false,
-    'process.env.__NEXT_NEW_TYPED_ROUTES':
-      config.experimental.newTypedRoutes ?? false,
+    'process.env.__NEXT_TYPED_ROUTES': config.experimental.typedRoutes ?? false,
     'process.env.__NEXT_ASSET_PREFIX': config.assetPrefix,
     'process.env.__NEXT_EXPERIMENTAL_AUTH_INTERRUPTS':
       !!config.experimental.authInterrupts,

packages/next/src/build/index.ts

@@ -1424,8 +1424,8 @@ export default async function build(
         app: appPaths.length > 0 ? appPaths : undefined,
       }
 
-      // Generate route types if experimental.newTypedRoutes is enabled
-      if (config.experimental.newTypedRoutes) {
+      // Generate route types if experimental.typedRoutes is enabled
+      if (config.experimental.typedRoutes) {
         await nextBuildSpan
           .traceChild('generate-route-types')
           .traceAsyncFn(async () => {

packages/next/src/build/webpack-config.ts

@@ -387,7 +387,6 @@ export default async function getBaseWebpackConfig(
 
   const hasAppDir = !!appDir
   const disableOptimizedLoading = true
-  const enableTypedRoutes = !!config.experimental.typedRoutes && hasAppDir
   const bundledReactChannel = needsExperimentalReact(config)
     ? '-experimental'
     : ''
@@ -2128,7 +2127,6 @@ export default async function getBaseWebpackConfig(
           dev,
           isEdgeServer,
           pageExtensions: config.pageExtensions,
-          typedRoutes: enableTypedRoutes,
           cacheLifeConfig: config.experimental.cacheLife,
           originalRewrites,
           originalRedirects,

packages/next/src/build/webpack/plugins/next-types-plugin/index.test.ts

@@ -11,7 +11,6 @@ describe('next-types-plugin', () => {
       dev: false,
       isEdgeServer: false,
       pageExtensions: ['tsx', 'ts', 'jsx', 'js'],
-      typedRoutes: false,
       cacheLifeConfig: undefined,
       originalRewrites: undefined,
       originalRedirects: undefined,
@@ -40,7 +39,6 @@ describe('next-types-plugin', () => {
       dev: false,
       isEdgeServer: false,
       pageExtensions: ['tsx', 'ts', 'jsx', 'js'],
-      typedRoutes: false,
       cacheLifeConfig: undefined,
       originalRewrites: undefined,
       originalRedirects: undefined,
@@ -61,7 +59,6 @@ describe('next-types-plugin', () => {
       dev: false,
       isEdgeServer: false,
       pageExtensions: ['tsx', 'ts', 'jsx', 'js'],
-      typedRoutes: false,
       cacheLifeConfig: undefined,
       originalRewrites: undefined,
       originalRedirects: undefined,