fix: fileExt loader could be undefined

vitejs · Mar 14, 2022 · f25312b · f25312b
1 parent cb78711
commit f25312b
Showing 1 changed file with 4 additions and 3 deletions.
diff --git a/packages/vite/src/node/optimizer/index.ts b/packages/vite/src/node/optimizer/index.ts
@@ -253,9 +253,10 @@ export async function optimizeDeps(
         `Unable to parse dependency: ${id}. Trying again with a JSX transform.`
       )
       const transformed = await transformWithEsbuild(entryContent, filePath, {
-        loader: esbuildOptions.loader
-          ? esbuildOptions.loader[path.extname(filePath)]
-          : 'jsx'
+        loader:
+          (esbuildOptions.loader &&
+            esbuildOptions.loader[path.extname(filePath)]) ||
+          'jsx'
       })
       // Ensure that optimization won't fail by defaulting '.js' to the JSX parser.
       // This is useful for packages such as Gatsby.