diff --git a/packages/vite/src/node/optimizer/scan.ts b/packages/vite/src/node/optimizer/scan.ts
index f530b40d12764a..62255c6abcf43e 100644
--- a/packages/vite/src/node/optimizer/scan.ts
+++ b/packages/vite/src/node/optimizer/scan.ts
@@ -187,7 +187,7 @@ function esbuildScanPlugin(
     name: 'vite:dep-scan',
     setup(build) {
       const scripts: Record<string, OnLoadResult> = {}
-      let scriptId = 0
+      const scriptIdMap: Record<string, number> = {}
 
       // external urls
       build.onResolve({ filter: externalRE }, ({ path }) => ({
@@ -274,7 +274,10 @@ function esbuildScanPlugin(
                 content +
                 (loader.startsWith('ts') ? extractImportPaths(content) : '')
 
-              const key = `${path}?id=${scriptId++}`
+              const scriptId = scriptIdMap[path] ?? 1
+              scriptIdMap[path] = scriptId + 1
+
+              const key = `${path}?id=${scriptId}`
 
               if (contents.includes('import.meta.glob')) {
                 scripts[key] = {
@@ -294,7 +297,7 @@ function esbuildScanPlugin(
                 }
               }
 
-              js += `import ${JSON.stringify(virtualModulePrefix + key)};\n`
+              js += `import ${JSON.stringify(virtualModulePrefix + key)}\n`
             }
           }
 
@@ -307,7 +310,7 @@ function esbuildScanPlugin(
           }
 
           return {
-            loader,
+            loader: 'js',
             contents: js
           }
         }