config.experimental.turbo.unstablePersistentCaching -> config.experimental.turbopackPersistentCaching

Author: wbinnssmith

packages/next/src/build/index.ts

@@ -3739,7 +3739,7 @@ function warnAboutTurbopackBuilds(config?: NextConfigComplete) {
   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.'
 
-  if (!config?.experimental.turbo?.unstablePersistentCaching) {
+  if (!config?.experimental.turbopackPersistentCaching) {
     warningStr +=
       '\n- This build is without disk caching; subsequent builds will become faster when disk caching becomes available.'
   }

packages/next/src/server/config-shared.ts

@@ -149,11 +149,6 @@ export interface TurbopackOptions {
    */
   memoryLimit?: number
 
-  /**
-   * Enable persistent caching for the turbopack dev server and build.
-   */
-  unstablePersistentCaching?: boolean
-
   /**
    * Enable tree shaking for the turbopack dev server and build.
    */
@@ -386,7 +381,12 @@ export interface ExperimentalConfig {
   /**
    * @deprecated Use `config.turbopack` instead.
    */
-  turbo?: TurbopackOptions
+  turbo?: DeprecatedExperimentalTurboOptions
+
+  /**
+   * Enable persistent caching for the turbopack dev server and build.
+   */
+  turbopackPersistentCaching?: boolean
 
   /**
    * For use with `@next/mdx`. Compile MDX files using the new Rust compiler.

packages/next/src/server/config.ts

@@ -251,9 +251,9 @@ function assignDefaults(
       throw new CanaryOnlyError({ feature: 'experimental.ppr' })
     } else if (result.experimental?.dynamicIO) {
       throw new CanaryOnlyError({ feature: 'experimental.dynamicIO' })
-    } else if (result.experimental?.turbo?.unstablePersistentCaching) {
+    } else if (result.experimental?.turbopackPersistentCaching) {
       throw new CanaryOnlyError({
-        feature: 'experimental.turbo.unstablePersistentCaching',
+        feature: 'experimental.turbopackPersistentCaching',
       })
     } else if (result.experimental?.nodeMiddleware) {
       throw new CanaryOnlyError({ feature: 'experimental.nodeMiddleware' })