Fixup

Author: mischnic

packages/next/src/build/index.ts

@@ -3737,7 +3737,12 @@ function warnAboutTurbopackBuilds(config?: NextConfigComplete) {
       `We don't recommend deploying mission-critical applications to production.`
     )
   warningStr +=
-    '\n\n- It is expected that your bundle size might be different from `next build` with webpack. This will be improved as we work towards stability.'
+    '\n\n- ' +
+    bold(
+      'Turbopack currently always builds production sourcemaps for the browser. This will include project sourcecode if deployed to production.'
+    )
+  warningStr +=
+    '\n- It is expected that your bundle size might be different from `next build` with webpack. This will be improved as we work towards stability.'
 
   if (!config?.experimental.turbopackPersistentCaching) {
     warningStr +=

packages/next/src/server/config.ts

@@ -669,27 +669,21 @@ function assignDefaults(
     result.deploymentId = process.env.NEXT_DEPLOYMENT_ID
   }
 
-  if (result?.outputFileTracingRoot && !result?.experimental?.turbo?.root) {
-    dset(
-      result,
-      ['experimental', 'turbo', 'root'],
-      result.outputFileTracingRoot
-    )
+  if (result?.outputFileTracingRoot && !result?.turbopack?.root) {
+    dset(result, ['turbopack', 'root'], result.outputFileTracingRoot)
   }
 
   // use the closest lockfile as tracing root
-  if (!result?.outputFileTracingRoot || !result?.experimental?.turbo?.root) {
+  if (!result?.outputFileTracingRoot || !result?.turbopack?.root) {
     let rootDir = findRootDir(dir)
 
     if (rootDir) {
       if (!result?.outputFileTracingRoot) {
         result.outputFileTracingRoot = rootDir
-        defaultConfig.outputFileTracingRoot = result.outputFileTracingRoot
       }
 
-      if (!result?.experimental?.turbo?.root) {
-        dset(result, ['experimental', 'turbo', 'root'], rootDir)
-        dset(defaultConfig, ['experimental', 'turbo', 'root'], rootDir)
+      if (!result?.turbopack?.root) {
+        dset(result, ['turbopack', 'root'], rootDir)
       }
     }
   }