feat(useDevicePixelRatio): improve types (#4927)

doyuli · web-flow · commit 1b3d4e6a08bd · 2025-07-30T21:27:19.000+09:00
diff --git a/packages/core/useDevicePixelRatio/index.ts b/packages/core/useDevicePixelRatio/index.ts
@@ -1,3 +1,4 @@
+import type { WatchStopHandle } from 'vue'
 import type { ConfigurableWindow } from '../_configurable'
 import { noop, watchImmediate } from '@vueuse/shared'
 import { readonly, shallowRef } from 'vue'
@@ -18,7 +19,7 @@ export function useDevicePixelRatio(options: ConfigurableWindow = {}) {
 
   const pixelRatio = shallowRef(1)
   const query = useMediaQuery(() => `(resolution: ${pixelRatio.value}dppx)`, options)
-  let stop = noop
+  let stop: WatchStopHandle = noop
 
   if (window) {
     stop = watchImmediate(query, () => pixelRatio.value = window!.devicePixelRatio)
