fix: replace backslash style path to forward slash

src/codegen/generateRouteRecords.spec.ts

@@ -4,6 +4,7 @@ import { PrefixTree, TreeNode } from '../core/tree'
 import { resolveOptions } from '../options'
 import { generateRouteRecord } from './generateRouteRecords'
 import { ImportsMap } from '../core/utils'
+import { join } from 'path'
 
 const DEFAULT_OPTIONS = resolveOptions({})
 
@@ -339,5 +340,28 @@ describe('generateRouteRecord', () => {
       // what matters is that the import name is reused _page_0
       expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
     })
+    it('dedupes sync imports for the same component', () => {
+      const tree = new PrefixTree(
+        resolveOptions({
+          importMode: 'sync',
+        })
+      )
+
+      tree.insertParsedPath('a/b', 'a.vue')
+      tree.insertParsedPath('a/c', 'a.vue')
+
+      // what matters is that the import name is reused _page_0
+      expect(generateRouteRecordSimple(tree)).toMatchSnapshot()
+    })
+    it.runIf(process.platform === "win32")('path style should be normalized with Posix style', () => {
+      const tree = new PrefixTree(
+        resolveOptions({
+          importMode: 'async',
+        })
+      )
+      tree.insert('from-root', join(__dirname, './src/pages/index.vue'))
+      tree.insert('from-root2', join("\\unplugin-vue-router\\", './src/pages/index.vue'))
+      expect(generateRouteRecordSimple(tree)).not.toContain("\\") 
+    })
   })
 })

src/codegen/generateRouteRecords.ts

@@ -1,3 +1,4 @@
+import { normalize } from 'pathe'
 import type { TreeNode } from '../core/tree'
 import { ImportsMap } from '../core/utils'
 import { type ResolvedOptions } from '../options'
@@ -137,6 +138,9 @@ function generatePageImport(
   importMode: ResolvedOptions['importMode'],
   importsMap: ImportsMap
 ) {
+  if (process.platform === 'win32') {
+    filepath = normalize(filepath)
+  }
   const mode =
     typeof importMode === 'function' ? importMode(filepath) : importMode
   if (mode === 'async') {