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node_modules/vant/lib/sidebar-item/index.css

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+.van-sidebar-item{position:relative;display:block;box-sizing:border-box;padding:20px 12px;overflow:hidden;color:#323233;font-size:14px;line-height:20px;background-color:#f7f8fa;cursor:pointer;-webkit-user-select:none;user-select:none}.van-sidebar-item:active{background-color:#f2f3f5}.van-sidebar-item__text{position:relative;display:inline-block;word-break:break-all}.van-sidebar-item:not(:last-child)::after{border-bottom-width:1px}.van-sidebar-item--select{color:#323233;font-weight:500}.van-sidebar-item--select,.van-sidebar-item--select:active{background-color:#fff}.van-sidebar-item--select::before{position:absolute;top:50%;left:0;width:4px;height:16px;background-color:#ee0a24;-webkit-transform:translateY(-50%);transform:translateY(-50%);content:''}.van-sidebar-item--disabled{color:#c8c9cc;cursor:not-allowed}.van-sidebar-item--disabled:active{background-color:#f7f8fa}

node_modules/vant/lib/sidebar-item/index.js

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+"use strict";
+
+var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
+
+exports.__esModule = true;
+exports.default = void 0;
+
+var _extends2 = _interopRequireDefault(require("@babel/runtime/helpers/extends"));
+
+var _utils = require("../utils");
+
+var _relation = require("../mixins/relation");
+
+var _router = require("../utils/router");
+
+var _info = _interopRequireDefault(require("../info"));
+
+var _createNamespace = (0, _utils.createNamespace)('sidebar-item'),
+    createComponent = _createNamespace[0],
+    bem = _createNamespace[1];
+
+var _default = createComponent({
+  mixins: [(0, _relation.ChildrenMixin)('vanSidebar')],
+  props: (0, _extends2.default)({}, _router.routeProps, {
+    dot: Boolean,
+    // @deprecated
+    info: [Number, String],
+    badge: [Number, String],
+    title: String,
+    disabled: Boolean
+  }),
+  computed: {
+    select: function select() {
+      return this.index === +this.parent.activeKey;
+    }
+  },
+  methods: {
+    onClick: function onClick() {
+      if (this.disabled) {
+        return;
+      }
+
+      this.$emit('click', this.index);
+      this.parent.$emit('input', this.index);
+      this.parent.setIndex(this.index);
+      (0, _router.route)(this.$router, this);
+    }
+  },
+  render: function render() {
+    var _this$slots, _this$badge;
+
+    var h = arguments[0];
+
+    if (process.env.NODE_ENV === 'development' && this.info) {
+      console.warn('[Vant] SidebarItem: "info" prop is deprecated, use "badge" prop instead.');
+    }
+
+    return h("a", {
+      "class": bem({
+        select: this.select,
+        disabled: this.disabled
+      }),
+      "on": {
+        "click": this.onClick
+      }
+    }, [h("div", {
+      "class": bem('text')
+    }, [(_this$slots = this.slots('title')) != null ? _this$slots : this.title, h(_info.default, {
+      "attrs": {
+        "dot": this.dot,
+        "info": (_this$badge = this.badge) != null ? _this$badge : this.info
+      },
+      "class": bem('info')
+    })])]);
+  }
+});
+
+exports.default = _default;

node_modules/vant/lib/sidebar-item/index.less

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+@import '../style/var';
+
+.van-sidebar-item {
+  position: relative;
+  display: block;
+  box-sizing: border-box;
+  padding: @sidebar-padding;
+  overflow: hidden;
+  color: @sidebar-text-color;
+  font-size: @sidebar-font-size;
+  line-height: @sidebar-line-height;
+  background-color: @sidebar-background-color;
+  cursor: pointer;
+  user-select: none;
+
+  &:active {
+    background-color: @sidebar-active-color;
+  }
+
+  &__text {
+    position: relative;
+    display: inline-block;
+    // https://github.com/vant-ui/vant/issues/7455
+    word-break: break-all;
+  }
+
+  &:not(:last-child)::after {
+    border-bottom-width: 1px;
+  }
+
+  &--select {
+    color: @sidebar-selected-text-color;
+    font-weight: @sidebar-selected-font-weight;
+
+    &,
+    &:active {
+      background-color: @sidebar-selected-background-color;
+    }
+
+    &::before {
+      position: absolute;
+      top: 50%;
+      left: 0;
+      width: @sidebar-selected-border-width;
+      height: @sidebar-selected-border-height;
+      background-color: @sidebar-selected-border-color;
+      transform: translateY(-50%);
+      content: '';
+    }
+  }
+
+  &--disabled {
+    color: @sidebar-disabled-text-color;
+    cursor: not-allowed;
+
+    &:active {
+      background-color: @sidebar-background-color;
+    }
+  }
+}

node_modules/vant/lib/sidebar-item/style/index.js

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+require('../../style/base.css');
+require('../../info/index.css');
+require('../index.css');

node_modules/vant/lib/sidebar-item/style/less.js

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+require('../../style/base.less');
+require('../../info/index.less');
+require('../index.less');