fix: Avoid importing in source that __vitePreload has declared (close v…

…itejs#4016) (vitejs#4041) Co-authored-by: patak <matias.capeletto@gmail.com>
aleclarson · Nov 8, 2021 · cdf9d4f · cdf9d4f
1 parent 34227a9
commit cdf9d4f
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/packages/vite/src/node/plugins/importAnalysisBuild.ts b/packages/vite/src/node/plugins/importAnalysisBuild.ts
@@ -161,7 +161,11 @@ export function buildImportAnalysisPlugin(config: ResolvedConfig): Plugin {
         }
       }
 
-      if (needPreloadHelper && !ssr) {
+      if (
+        needPreloadHelper &&
+        !ssr &&
+        !source.includes(`const ${preloadMethod} =`)
+      ) {
         str().prepend(`import { ${preloadMethod} } from "${preloadHelperId}";`)
       }