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node_modules/vant/es/tabbar-item/index.css

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+.van-tabbar-item{display:-webkit-box;display:-webkit-flex;display:flex;-webkit-box-flex:1;-webkit-flex:1;flex:1;-webkit-box-orient:vertical;-webkit-box-direction:normal;-webkit-flex-direction:column;flex-direction:column;-webkit-box-align:center;-webkit-align-items:center;align-items:center;-webkit-box-pack:center;-webkit-justify-content:center;justify-content:center;color:#646566;font-size:12px;line-height:1;cursor:pointer}.van-tabbar-item__icon{position:relative;margin-bottom:4px;font-size:22px}.van-tabbar-item__icon .van-icon{display:block}.van-tabbar-item__icon img{display:block;height:20px}.van-tabbar-item--active{color:#1989fa;background-color:#fff}.van-tabbar-item .van-info{margin-top:4px}

node_modules/vant/es/tabbar-item/index.js

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+import _extends from "@babel/runtime/helpers/esm/extends";
+// Utils
+import { createNamespace, isObject, isDef } from '../utils';
+import { route, routeProps } from '../utils/router'; // Mixins
+
+import { ChildrenMixin } from '../mixins/relation'; // Components
+
+import Icon from '../icon';
+import Info from '../info';
+
+var _createNamespace = createNamespace('tabbar-item'),
+    createComponent = _createNamespace[0],
+    bem = _createNamespace[1];
+
+export default createComponent({
+  mixins: [ChildrenMixin('vanTabbar')],
+  props: _extends({}, routeProps, {
+    dot: Boolean,
+    icon: String,
+    name: [Number, String],
+    // @deprecated
+    info: [Number, String],
+    badge: [Number, String],
+    iconPrefix: String
+  }),
+  data: function data() {
+    return {
+      nameMatched: false
+    };
+  },
+  computed: {
+    active: function active() {
+      var routeMode = this.parent.route;
+
+      if (routeMode && '$route' in this) {
+        var to = this.to,
+            $route = this.$route;
+        var config = isObject(to) ? to : {
+          path: to
+        };
+        return !!$route.matched.find(function (r) {
+          // vue-router 3.x $route.matched[0].path is empty in / and its children paths
+          var path = r.path === '' ? '/' : r.path;
+          var pathMatched = config.path === path;
+          var nameMatched = isDef(config.name) && config.name === r.name;
+          return pathMatched || nameMatched;
+        });
+      }
+
+      return this.nameMatched;
+    }
+  },
+  methods: {
+    onClick: function onClick(event) {
+      var _this = this;
+
+      if (!this.active) {
+        this.parent.triggerChange(this.name || this.index, function () {
+          route(_this.$router, _this);
+        });
+      }
+
+      this.$emit('click', event);
+    },
+    genIcon: function genIcon() {
+      var h = this.$createElement;
+      var slot = this.slots('icon', {
+        active: this.active
+      });
+
+      if (slot) {
+        return slot;
+      }
+
+      if (this.icon) {
+        return h(Icon, {
+          "attrs": {
+            "name": this.icon,
+            "classPrefix": this.iconPrefix
+          }
+        });
+      }
+    }
+  },
+  render: function render() {
+    var _this$badge;
+
+    var h = arguments[0];
+    var active = this.active;
+    var color = this.parent[active ? 'activeColor' : 'inactiveColor'];
+
+    if (process.env.NODE_ENV === 'development' && this.info) {
+      console.warn('[Vant] TabbarItem: "info" prop is deprecated, use "badge" prop instead.');
+    }
+
+    return h("div", {
+      "class": bem({
+        active: active
+      }),
+      "style": {
+        color: color
+      },
+      "on": {
+        "click": this.onClick
+      }
+    }, [h("div", {
+      "class": bem('icon')
+    }, [this.genIcon(), h(Info, {
+      "attrs": {
+        "dot": this.dot,
+        "info": (_this$badge = this.badge) != null ? _this$badge : this.info
+      }
+    })]), h("div", {
+      "class": bem('text')
+    }, [this.slots('default', {
+      active: active
+    })])]);
+  }
+});

node_modules/vant/es/tabbar-item/index.less

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+@import '../style/var';
+
+.van-tabbar-item {
+  display: flex;
+  flex: 1;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  color: @tabbar-item-text-color;
+  font-size: @tabbar-item-font-size;
+  line-height: @tabbar-item-line-height;
+  cursor: pointer;
+
+  &__icon {
+    position: relative;
+    margin-bottom: @tabbar-item-margin-bottom;
+    font-size: @tabbar-item-icon-size;
+
+    .van-icon {
+      display: block;
+    }
+
+    img {
+      display: block;
+      height: 20px;
+    }
+  }
+
+  &--active {
+    color: @tabbar-item-active-color;
+    background-color: @tabbar-item-active-background-color;
+  }
+
+  .van-info {
+    margin-top: @padding-base;
+  }
+}

node_modules/vant/es/tabbar-item/style/index.js

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+import '../../style/base.css';
+import '../../info/index.css';
+import '../../icon/index.css';
+import '../index.css';

node_modules/vant/es/tabbar-item/style/less.js

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+import '../../style/base.less';
+import '../../info/index.less';
+import '../../icon/index.less';
+import '../index.less';