动画方法返回Promise对象

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@bd/core",
-  "version": "1.8.2",
+  "version": "1.8.3",
   "type": "module",
   "description": "百搭UI组件库的核心",
   "main": "dist/index.js",

src/anim.js

@@ -13,15 +13,18 @@ export function animate(duration = 200, fromto = [], out = false) {
     direction: out ? 'reverse' : 'normal',
     fill: 'forwards'
   })
-  if (out) {
+  return new Promise(resolve => {
     res.addEventListener(
       'finish',
       _ => {
+        if (out) {
           this.style.display = 'none'
+        }
+        resolve()
       },
       { once: true }
     )
-  }
+  })
 }
 export const MODES = {
   fade: [{ opacity: 0 }, { opacity: 1 }],

src/html.js

@@ -631,7 +631,7 @@ class AnimPart extends AttributePart {
       fromto = custom
     }
     this.element.$animate = function (out = false) {
-      animate.call(this, duration, fromto, out)
+      return animate.call(this, duration, fromto, out)
     }
   }
 }

src/index.js

@@ -91,7 +91,7 @@ export class Component extends HTMLElement {
       Object.defineProperty(this.prototype, '$animate', {
         value(out) {
           if (this[__mounted__]) {
-            animate.call(this, duration, MODES[type], out)
+            return animate.call(this, duration, MODES[type], out)
           }
         },
         enumerable: false