feat(useToast): proxy emits

src/runtime/composables/useToast.ts

@@ -1,8 +1,9 @@
 import { ref, nextTick } from 'vue'
 import { useState } from '#imports'
-import type { ToastProps } from '../types'
+import type { ToastProps, ToastEmits } from '../types'
+import type { EmitsToProps } from '../types/utils'
 
-export interface Toast extends Omit<ToastProps, 'defaultOpen'> {
+export interface Toast extends Omit<ToastProps, 'defaultOpen'>, EmitsToProps<ToastEmits> {
   id: string | number
   onClick?: (toast: Toast) => void
 }
@@ -38,7 +39,7 @@ export function useToast() {
       id: generateId(),
       open: true,
       ...toast
-    }
+    } as Toast
 
     queue.push(body)
 

src/runtime/types/utils.ts

@@ -38,3 +38,9 @@ export type StringOrVNode =
   | string
   | VNode
   | (() => VNode)
+
+export type EmitsToProps<T> = {
+  [K in keyof T as `on${Capitalize<string & K>}`]: T[K] extends [...args: infer Args]
+    ? (...args: Args) => void
+    : never
+}