fix: ssr transform check valid inMap

vitejs · Jan 19, 2021 · bf4b3e9 · bf4b3e9
1 parent 92cccc4
commit bf4b3e9
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/vite/src/node/ssr/ssrTransform.ts b/packages/vite/src/node/ssr/ssrTransform.ts
@@ -159,7 +159,7 @@ export async function ssrTransform(
   })
 
   let map = s.generateMap({ hires: true })
-  if (inMap) {
+  if (inMap && inMap.mappings) {
     map = merge(inMap, {
       ...map,
       sources: inMap.sources,