Release turbopackFileSystemCacheForBuild to stable builds

Author: lukesandberg

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

@@ -410,7 +410,7 @@ export interface ExperimentalConfig {
   /**
    * Enable filesystem cache for the turbopack dev server.
    *
-   * Defaults to `true` in canary releases.
+   * Defaults to `true`.
    */
   turbopackFileSystemCacheForDev?: boolean
 
@@ -1527,7 +1527,7 @@ export const defaultConfig = Object.freeze({
     proxyClientMaxBodySize: 10_485_760, // 10MB
     hideLogsAfterAbort: false,
     mcpServer: true,
-    turbopackFileSystemCacheForDev: !isStableBuild(),
+    turbopackFileSystemCacheForDev: true,
     turbopackFileSystemCacheForBuild: false,
   },
   htmlLimitedBots: undefined,

packages/next/src/server/config.ts

@@ -38,10 +38,6 @@ import { dset } from '../shared/lib/dset'
 import { normalizeZodErrors } from '../shared/lib/zod'
 import { HTML_LIMITED_BOT_UA_RE_STRING } from '../shared/lib/router/utils/is-bot'
 import { findDir } from '../lib/find-pages-dir'
-import {
-  CanaryOnlyConfigError,
-  isStableBuild,
-} from '../shared/lib/errors/canary-only-config-error'
 import { interopDefault } from '../lib/interop-default'
 import { djb2Hash } from '../shared/lib/hash'
 import type { NextAdapter } from '../build/adapter/build-complete'
@@ -398,15 +394,6 @@ function assignDefaultsAndValidate(
     )
   }
 
-  if (isStableBuild()) {
-    // Prevents usage of certain experimental features outside of canary
-    if (result.experimental.turbopackFileSystemCacheForBuild) {
-      throw new CanaryOnlyConfigError({
-        feature: 'experimental.turbopackFileSystemCacheForBuild',
-      })
-    }
-  }
-
   if (result.experimental.ppr) {
     throw new HardDeprecatedConfigError(
       `\`experimental.ppr\` has been merged into \`cacheComponents\`. The Partial Prerendering feature is still available, but is now enabled via \`cacheComponents\`. Please update your ${configFileName} accordingly.`