提交初始版本，使用vant ui库

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

@@ -0,0 +1,26 @@
+/* eslint-disable */
+var style = require('../wxs/style.wxs');
+var addUnit = require('../wxs/add-unit.wxs');
+
+function rootStyle(data) {
+  var currentColor = data.checked === data.activeValue ? data.activeColor : data.inactiveColor;
+
+  return style({
+    'font-size': addUnit(data.size),
+    'background-color': currentColor,
+  });
+}
+
+var BLUE = '#1989fa';
+var GRAY_DARK = '#969799';
+
+function loadingColor(data) {
+  return data.checked === data.activeValue
+    ? data.activeColor || BLUE
+    : data.inactiveColor || GRAY_DARK;
+}
+
+module.exports = {
+  rootStyle: rootStyle,
+  loadingColor: loadingColor,
+};