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

…4016) (#4041) Co-authored-by: patak <matias.capeletto@gmail.com>
vitejs · Jul 1, 2021 · bd34203 · bd34203
1 parent eb2e41b
commit bd34203
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}";`)
       }