提交初始版本，使用vant ui库

miniprogram_npm/@vant/weapp/transition/index.d.ts

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+export {};

miniprogram_npm/@vant/weapp/transition/index.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var component_1 = require("../common/component");
+var transition_1 = require("../mixins/transition");
+(0, component_1.VantComponent)({
+    classes: [
+        'enter-class',
+        'enter-active-class',
+        'enter-to-class',
+        'leave-class',
+        'leave-active-class',
+        'leave-to-class',
+    ],
+    mixins: [(0, transition_1.transition)(true)],
+});

miniprogram_npm/@vant/weapp/transition/index.json

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+{
+  "component": true
+}

miniprogram_npm/@vant/weapp/transition/index.wxml

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+<wxs src="./index.wxs" module="computed" />
+
+<view
+  wx:if="{{ inited }}"
+  class="van-transition custom-class {{ classes }}"
+  style="{{ computed.rootStyle({ currentDuration, display, customStyle }) }}"
+  bind:transitionend="onTransitionEnd"
+>
+  <slot />
+</view>

miniprogram_npm/@vant/weapp/transition/index.wxs

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+/* eslint-disable */
+var style = require('../wxs/style.wxs');
+
+function rootStyle(data) {
+  return style([
+    {
+      '-webkit-transition-duration': data.currentDuration + 'ms',
+      'transition-duration': data.currentDuration + 'ms',
+    },
+    data.display ? null : 'display: none',
+    data.customStyle,
+  ]);
+}
+
+module.exports = {
+  rootStyle: rootStyle,
+};

miniprogram_npm/@vant/weapp/transition/index.wxss

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+@import '../common/index.wxss';.van-transition{transition-timing-function:ease}.van-fade-enter-active,.van-fade-leave-active{transition-property:opacity}.van-fade-enter,.van-fade-leave-to{opacity:0}.van-fade-down-enter-active,.van-fade-down-leave-active,.van-fade-left-enter-active,.van-fade-left-leave-active,.van-fade-right-enter-active,.van-fade-right-leave-active,.van-fade-up-enter-active,.van-fade-up-leave-active{transition-property:opacity,transform}.van-fade-up-enter,.van-fade-up-leave-to{opacity:0;transform:translate3d(0,100%,0)}.van-fade-down-enter,.van-fade-down-leave-to{opacity:0;transform:translate3d(0,-100%,0)}.van-fade-left-enter,.van-fade-left-leave-to{opacity:0;transform:translate3d(-100%,0,0)}.van-fade-right-enter,.van-fade-right-leave-to{opacity:0;transform:translate3d(100%,0,0)}.van-slide-down-enter-active,.van-slide-down-leave-active,.van-slide-left-enter-active,.van-slide-left-leave-active,.van-slide-right-enter-active,.van-slide-right-leave-active,.van-slide-up-enter-active,.van-slide-up-leave-active{transition-property:transform}.van-slide-up-enter,.van-slide-up-leave-to{transform:translate3d(0,100%,0)}.van-slide-down-enter,.van-slide-down-leave-to{transform:translate3d(0,-100%,0)}.van-slide-left-enter,.van-slide-left-leave-to{transform:translate3d(-100%,0,0)}.van-slide-right-enter,.van-slide-right-leave-to{transform:translate3d(100%,0,0)}