Disable "use cache" outside of dynamicIO (#70538)

vercel · Sep 26, 2024 · c23f957 · c23f957
1 parent a184047
commit c23f957
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diff --git a/packages/next/src/build/webpack/plugins/define-env-plugin.ts b/packages/next/src/build/webpack/plugins/define-env-plugin.ts
@@ -183,6 +183,7 @@ export function getDefineEnv({
       config.devIndicators.appIsrStatus
     ),
     'process.env.__NEXT_PPR': checkIsAppPPREnabled(config.experimental.ppr),
+    'process.env.__NEXT_DYNAMIC_IO': !!config.experimental.dynamicIO,
     'process.env.__NEXT_AFTER': config.experimental.after ?? false,
     'process.env.NEXT_DEPLOYMENT_ID': config.deploymentId || false,
     'process.env.__NEXT_FETCH_CACHE_KEY_PREFIX': fetchCacheKeyPrefix ?? '',

diff --git a/packages/next/src/server/use-cache/use-cache-wrapper.ts b/packages/next/src/server/use-cache/use-cache-wrapper.ts
@@ -160,6 +160,11 @@ async function generateCacheEntry(
 }
 
 export function cache(kind: string, id: string, fn: any) {
+  if (!process.env.__NEXT_DYNAMIC_IO) {
+    throw new Error(
+      '"use cache" is only available with the experimental.dynamicIO config.'
+    )
+  }
   const cacheHandler = cacheHandlerMap.get(kind)
   if (cacheHandler === undefined) {
     throw new Error('Unknown cache handler: ' + kind)