first

node_modules/vant/es/index-anchor/index.css

@@ -0,0 +1 @@
+.van-index-anchor{z-index:1;box-sizing:border-box;padding:0 16px;color:#323233;font-weight:500;font-size:14px;line-height:32px;background-color:transparent}.van-index-anchor--sticky{position:fixed;top:0;right:0;left:0;color:#ee0a24;background-color:#fff}

node_modules/vant/es/index-anchor/index.js

@@ -0,0 +1,83 @@
+import { createNamespace } from '../utils';
+import { ChildrenMixin } from '../mixins/relation';
+import { BORDER_BOTTOM } from '../utils/constant';
+import { getScrollTop, getRootScrollTop } from '../utils/dom/scroll';
+
+var _createNamespace = createNamespace('index-anchor'),
+    createComponent = _createNamespace[0],
+    bem = _createNamespace[1];
+
+export default createComponent({
+  mixins: [ChildrenMixin('vanIndexBar', {
+    indexKey: 'childrenIndex'
+  })],
+  props: {
+    index: [Number, String]
+  },
+  data: function data() {
+    return {
+      top: 0,
+      left: null,
+      rect: {
+        top: 0,
+        height: 0
+      },
+      width: null,
+      active: false
+    };
+  },
+  computed: {
+    sticky: function sticky() {
+      return this.active && this.parent.sticky;
+    },
+    anchorStyle: function anchorStyle() {
+      if (this.sticky) {
+        return {
+          zIndex: "" + this.parent.zIndex,
+          left: this.left ? this.left + "px" : null,
+          width: this.width ? this.width + "px" : null,
+          transform: "translate3d(0, " + this.top + "px, 0)",
+          color: this.parent.highlightColor
+        };
+      }
+    }
+  },
+  mounted: function mounted() {
+    var rect = this.$el.getBoundingClientRect();
+    this.rect.height = rect.height;
+  },
+  methods: {
+    scrollIntoView: function scrollIntoView() {
+      this.$el.scrollIntoView();
+    },
+    getRect: function getRect(scroller, scrollerRect) {
+      var el = this.$el;
+      var elRect = el.getBoundingClientRect();
+      this.rect.height = elRect.height;
+
+      if (scroller === window || scroller === document.body) {
+        this.rect.top = elRect.top + getRootScrollTop();
+      } else {
+        this.rect.top = elRect.top + getScrollTop(scroller) - scrollerRect.top;
+      }
+
+      return this.rect;
+    }
+  },
+  render: function render() {
+    var _ref;
+
+    var h = arguments[0];
+    var sticky = this.sticky;
+    return h("div", {
+      "style": {
+        height: sticky ? this.rect.height + "px" : null
+      }
+    }, [h("div", {
+      "style": this.anchorStyle,
+      "class": [bem({
+        sticky: sticky
+      }), (_ref = {}, _ref[BORDER_BOTTOM] = sticky, _ref)]
+    }, [this.slots('default') || this.index])]);
+  }
+});

node_modules/vant/es/index-anchor/index.less

@@ -0,0 +1,21 @@
+@import '../style/var';
+
+.van-index-anchor {
+  z-index: @index-anchor-z-index;
+  box-sizing: border-box;
+  padding: @index-anchor-padding;
+  color: @index-anchor-text-color;
+  font-weight: @index-anchor-font-weight;
+  font-size: @index-anchor-font-size;
+  line-height: @index-anchor-line-height;
+  background-color: @index-anchor-background-color;
+
+  &--sticky {
+    position: fixed;
+    top: 0;
+    right: 0;
+    left: 0;
+    color: @index-anchor-sticky-text-color;
+    background-color: @index-anchor-sticky-background-color;
+  }
+}

node_modules/vant/es/index-anchor/style/index.js

@@ -0,0 +1,2 @@
+import '../../style/base.css';
+import '../index.css';

node_modules/vant/es/index-anchor/style/less.js

@@ -0,0 +1,2 @@
+import '../../style/base.less';
+import '../index.less';