fix: loader may be undefined

incase typescript check
vitejs · Feb 10, 2022 · 12bb3ba · 12bb3ba
1 parent f6b2d4f
commit 12bb3ba
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/vite/src/node/optimizer/scan.ts b/packages/vite/src/node/optimizer/scan.ts
@@ -435,7 +435,7 @@ function esbuildScanPlugin(
         }
         const { loader } = config.optimizeDeps?.esbuildOptions ?? {}
         return {
-          loader: loader[`.${ext}`] || ext as Loader,
+          loader: (loader && loader[`.${ext}`]) || ext as Loader,
           contents
         }
       })