Handle getStaticProps.redirect (vercel/turbo#3497)

This PR adds support for returning `redirect: { destination, permanent,
statusCode }` from `getStaticProps`.

packages/next-swc/crates/next-core/js/src/internal/page-server-handler.tsx

@@ -8,6 +8,8 @@ import "@vercel/turbopack-next/internal/shims";
 import type { IncomingMessage, ServerResponse } from "node:http";
 
 import { renderToHTML, RenderOpts } from "next/dist/server/render";
+import { getRedirectStatus } from "next/dist/lib/redirect-status";
+import { PERMANENT_REDIRECT_STATUS } from "next/dist/shared/lib/constants";
 import type { BuildManifest } from "next/dist/server/get-page-files";
 import type { ReactLoadableManifest } from "next/dist/server/load-components";
 
@@ -27,7 +29,7 @@ type IpcOutgoingMessage =
   | {
       type: "response";
       statusCode: number;
-      contentType: string;
+      headers: Array<[string, string]>;
       body: string;
     }
   | { type: "rewrite"; path: string };
@@ -197,7 +199,7 @@ export default function startHandler({
       renderOpts
     );
 
-    // This is set when `getStaticProps` returns `notFound: true`.
+    // Set when `getStaticProps` returns `notFound: true`.
     const isNotFound = (renderOpts as any).isNotFound;
 
     if (isNotFound) {
@@ -206,7 +208,7 @@ export default function startHandler({
           type: "response",
           statusCode,
           body: '{"notFound":true}',
-          contentType: MIME_APPLICATION_JAVASCRIPT,
+          headers: [["Content-Type", MIME_APPLICATION_JAVASCRIPT]],
         };
       }
 
@@ -218,13 +220,49 @@ export default function startHandler({
       };
     }
 
+    // Set when `getStaticProps` returns `redirect: { destination, permanent, statusCode }`.
+    const isRedirect = (renderOpts as any).isRedirect;
+
+    if (isRedirect && !isDataReq) {
+      const pageProps = (renderOpts as any).pageData.pageProps;
+      const redirect = {
+        destination: pageProps.__N_REDIRECT,
+        statusCode: pageProps.__N_REDIRECT_STATUS,
+        basePath: pageProps.__N_REDIRECT_BASE_PATH,
+      };
+      const statusCode = getRedirectStatus(redirect);
+
+      // TODO(alexkirsz) Handle basePath.
+      // if (
+      //   basePath &&
+      //   redirect.basePath !== false &&
+      //   redirect.destination.startsWith("/")
+      // ) {
+      //   redirect.destination = `${basePath}${redirect.destination}`;
+      // }
+
+      const headers: Array<[string, string]> = [
+        ["Location", redirect.destination],
+      ];
+      if (statusCode === PERMANENT_REDIRECT_STATUS) {
+        headers.push(["Refresh", `0;url=${redirect.destination}`]);
+      }
+
+      return {
+        type: "response",
+        statusCode,
+        headers,
+        body: redirect.destination,
+      };
+    }
+
     if (isDataReq) {
       // TODO(from next.js): change this to a different passing mechanism
       const pageData = (renderOpts as any).pageData;
       return {
         type: "response",
         statusCode,
-        contentType: MIME_APPLICATION_JAVASCRIPT,
+        headers: [["Content-Type", MIME_APPLICATION_JAVASCRIPT]],
         // Page data is only returned if the page had getXxyProps.
         body: JSON.stringify(pageData === undefined ? {} : pageData),
       };
@@ -235,14 +273,16 @@ export default function startHandler({
     }
 
     const body = renderResult.toUnchunkedString();
-    // TODO: handle these
+
+    // TODO: handle revalidate
     // const sprRevalidate = (renderOpts as any).revalidate;
-    // const isRedirect = (renderOpts as any).isRedirect;
 
     return {
       type: "response",
       statusCode,
-      contentType: renderResult.contentType() ?? MIME_TEXT_HTML_UTF8,
+      headers: [
+        ["Content-Type", renderResult.contentType() ?? MIME_TEXT_HTML_UTF8],
+      ],
       body,
     };
   }

packages/next-swc/crates/next-core/src/manifest.rs

@@ -5,7 +5,8 @@ use turbo_tasks::primitives::StringsVc;
 use turbo_tasks_fs::File;
 use turbopack_core::asset::AssetContentVc;
 use turbopack_dev_server::source::{
-    ContentSource, ContentSourceContent, ContentSourceData, ContentSourceResultVc, ContentSourceVc,
+    ContentSource, ContentSourceContentVc, ContentSourceData, ContentSourceResultVc,
+    ContentSourceVc,
 };
 use turbopack_node::render::{
     node_api_source::NodeApiContentSourceVc, rendered_source::NodeRenderContentSourceVc,
@@ -77,9 +78,7 @@ impl ContentSource for DevManifestContentSource {
         let file = File::from(manifest_content).with_content_type(APPLICATION_JSON);
 
         Ok(ContentSourceResultVc::exact(
-            ContentSourceContent::Static(AssetContentVc::from(file).into())
-                .cell()
-                .into(),
+            ContentSourceContentVc::static_content(AssetContentVc::from(file).into()).into(),
         ))
     }
 }

packages/next-swc/crates/next-dev/src/turbo_tasks_viz.rs

@@ -10,7 +10,7 @@ use turbo_tasks_memory::{
 };
 use turbopack_core::asset::AssetContentVc;
 use turbopack_dev_server::source::{
-    ContentSource, ContentSourceContent, ContentSourceData, ContentSourceDataFilter,
+    ContentSource, ContentSourceContentVc, ContentSourceData, ContentSourceDataFilter,
     ContentSourceDataVary, ContentSourceResultVc, ContentSourceVc, NeededData,
 };
 
@@ -106,10 +106,9 @@ impl ContentSource for TurboTasksSource {
             _ => return Ok(ContentSourceResultVc::not_found()),
         };
         Ok(ContentSourceResultVc::exact(
-            ContentSourceContent::Static(
+            ContentSourceContentVc::static_content(
                 AssetContentVc::from(File::from(html).with_content_type(TEXT_HTML_UTF_8)).into(),
             )
-            .cell()
             .into(),
         ))
     }