feat(useFullscreen): autoExit support (vitest-dev#1272)

packages/core/useFullscreen/index.ts

@@ -1,6 +1,7 @@
 /* this implementation is original ported from https://github.com/logaretm/vue-use-web by Abdelrahman Awad */
 
 import { ref } from 'vue-demi'
+import { tryOnScopeDispose } from '@vueuse/shared'
 import type { MaybeElementRef } from '../unrefElement'
 import { unrefElement } from '../unrefElement'
 import { useEventListener } from '../useEventListener'
@@ -62,6 +63,15 @@ const functionsMap: FunctionMap[] = [
   ],
 ] as any
 
+export interface UseFullscreenOptions extends ConfigurableDocument {
+  /**
+   * Automatically exit fullscreen when component is unmounted
+   *
+   * @default false
+   */
+  autoExit?: boolean
+}
+
 /**
  * Reactive Fullscreen API.
  *
@@ -71,9 +81,9 @@ const functionsMap: FunctionMap[] = [
  */
 export function useFullscreen(
   target?: MaybeElementRef,
-  options: ConfigurableDocument = {},
+  options: UseFullscreenOptions = {},
 ) {
-  const { document = defaultDocument } = options
+  const { document = defaultDocument, autoExit = false } = options
   const targetRef = target || document?.querySelector('html')
   const isFullscreen = ref(false)
   let isSupported = false
@@ -130,6 +140,9 @@ export function useFullscreen(
     }, false)
   }
 
+  if (autoExit)
+    tryOnScopeDispose(exit)
+
   return {
     isSupported,
     isFullscreen,