Disable babel if not required

vercel · Feb 5, 2025 · 5d94226 · 5d94226
1 parent 5391ca6
commit 5d94226
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Showing 2 changed files with 10 additions and 0 deletions.
diff --git a/packages/next/src/build/babel/loader/get-config.ts b/packages/next/src/build/babel/loader/get-config.ts
@@ -329,6 +329,10 @@ function getFreshConfig(
   }
 
   if (loaderOptions.transformMode === 'standalone') {
+    if (!reactCompilerPluginsIfEnabled.length) {
+      return null
+    }
+
     options.plugins = [jsx, ...reactCompilerPluginsIfEnabled]
     options.presets = [
       [
@@ -462,6 +466,9 @@ export default function getConfig(
   const cacheKey = getCacheKey(cacheCharacteristics)
   if (configCache.has(cacheKey)) {
     const cachedConfig = configCache.get(cacheKey)
+    if (!cachedConfig) {
+      return null
+    }
 
     return {
       ...cachedConfig,

diff --git a/packages/next/src/build/babel/loader/transform.ts b/packages/next/src/build/babel/loader/transform.ts
@@ -86,6 +86,9 @@ export default function transform(
     target,
     filename,
   })
+  if (!babelConfig) {
+    return { code: source, map: inputSourceMap }
+  }
   getConfigSpan.stop()
 
   const normalizeSpan = parentSpan.traceChild('babel-turbo-normalize-file')