docs: improve props types (#588)

src/runtime/components/overlays/Popover.vue

@@ -34,7 +34,7 @@ import { twMerge } from 'tailwind-merge'
 import { Popover as HPopover, PopoverButton as HPopoverButton, PopoverPanel as HPopoverPanel } from '@headlessui/vue'
 import { usePopper } from '../../composables/usePopper'
 import { defuTwMerge } from '../../utils'
-import type { PopperOptions } from '../../types'
+import type { PopperOptions } from '../../types/popper'
 import { useAppConfig } from '#imports'
 // TODO: Remove
 // @ts-expect-error
@@ -51,11 +51,9 @@ export default defineComponent({
   inheritAttrs: false,
   props: {
     mode: {
-      type: String,
+      type: String as PropType<'click' | 'hover'>,
       default: 'click',
-      validator: (value: string) => {
-        return ['click', 'hover'].includes(value)
-      }
+      validator: (value: string) => ['click', 'hover'].includes(value)
     },
     disabled: {
       type: Boolean,