调整分包，完成隐私协议（样式待优化）

node_modules/@vant/weapp/dist/sticky/index.d.ts

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+export {};

node_modules/@vant/weapp/dist/sticky/index.js

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+import { getRect } from '../common/utils';
+import { VantComponent } from '../common/component';
+import { isDef } from '../common/validator';
+import { pageScrollMixin } from '../mixins/page-scroll';
+const ROOT_ELEMENT = '.van-sticky';
+VantComponent({
+    props: {
+        zIndex: {
+            type: Number,
+            value: 99,
+        },
+        offsetTop: {
+            type: Number,
+            value: 0,
+            observer: 'onScroll',
+        },
+        disabled: {
+            type: Boolean,
+            observer: 'onScroll',
+        },
+        container: {
+            type: null,
+            observer: 'onScroll',
+        },
+        scrollTop: {
+            type: null,
+            observer(val) {
+                this.onScroll({ scrollTop: val });
+            },
+        },
+    },
+    mixins: [
+        pageScrollMixin(function (event) {
+            if (this.data.scrollTop != null) {
+                return;
+            }
+            this.onScroll(event);
+        }),
+    ],
+    data: {
+        height: 0,
+        fixed: false,
+        transform: 0,
+    },
+    mounted() {
+        this.onScroll();
+    },
+    methods: {
+        onScroll({ scrollTop } = {}) {
+            const { container, offsetTop, disabled } = this.data;
+            if (disabled) {
+                this.setDataAfterDiff({
+                    fixed: false,
+                    transform: 0,
+                });
+                return;
+            }
+            this.scrollTop = scrollTop || this.scrollTop;
+            if (typeof container === 'function') {
+                Promise.all([getRect(this, ROOT_ELEMENT), this.getContainerRect()])
+                    .then(([root, container]) => {
+                    if (offsetTop + root.height > container.height + container.top) {
+                        this.setDataAfterDiff({
+                            fixed: false,
+                            transform: container.height - root.height,
+                        });
+                    }
+                    else if (offsetTop >= root.top) {
+                        this.setDataAfterDiff({
+                            fixed: true,
+                            height: root.height,
+                            transform: 0,
+                        });
+                    }
+                    else {
+                        this.setDataAfterDiff({ fixed: false, transform: 0 });
+                    }
+                })
+                    .catch(() => { });
+                return;
+            }
+            getRect(this, ROOT_ELEMENT).then((root) => {
+                if (!isDef(root) || (!root.width && !root.height)) {
+                    return;
+                }
+                if (offsetTop >= root.top) {
+                    this.setDataAfterDiff({ fixed: true, height: root.height });
+                    this.transform = 0;
+                }
+                else {
+                    this.setDataAfterDiff({ fixed: false });
+                }
+            });
+        },
+        setDataAfterDiff(data) {
+            wx.nextTick(() => {
+                const diff = Object.keys(data).reduce((prev, key) => {
+                    if (data[key] !== this.data[key]) {
+                        prev[key] = data[key];
+                    }
+                    return prev;
+                }, {});
+                if (Object.keys(diff).length > 0) {
+                    this.setData(diff);
+                }
+                this.$emit('scroll', {
+                    scrollTop: this.scrollTop,
+                    isFixed: data.fixed || this.data.fixed,
+                });
+            });
+        },
+        getContainerRect() {
+            const nodesRef = this.data.container();
+            if (!nodesRef) {
+                return Promise.reject(new Error('not found container'));
+            }
+            return new Promise((resolve) => nodesRef.boundingClientRect(resolve).exec());
+        },
+    },
+});

node_modules/@vant/weapp/dist/sticky/index.json

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+{
+  "component": true
+}

node_modules/@vant/weapp/dist/sticky/index.wxml

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+<wxs src="../wxs/utils.wxs" module="utils" />
+<wxs src="./index.wxs" module="computed" />
+
+<view class="custom-class van-sticky" style="{{ computed.containerStyle({ fixed, height, zIndex }) }}">
+  <view class="{{ utils.bem('sticky-wrap', { fixed }) }}" style="{{ computed.wrapStyle({ fixed, offsetTop, transform, zIndex }) }}">
+    <slot />
+  </view>
+</view>

node_modules/@vant/weapp/dist/sticky/index.wxs

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+/* eslint-disable */
+var style = require('../wxs/style.wxs');
+var addUnit = require('../wxs/add-unit.wxs');
+
+function wrapStyle(data) {
+  return style({
+    transform: data.transform
+      ? 'translate3d(0, ' + data.transform + 'px, 0)'
+      : '',
+    top: data.fixed ? addUnit(data.offsetTop) : '',
+    'z-index': data.zIndex,
+  });
+}
+
+function containerStyle(data) {
+  return style({
+    height: data.fixed ? addUnit(data.height) : '',
+    'z-index': data.zIndex,
+  });
+}
+
+module.exports = {
+  wrapStyle: wrapStyle,
+  containerStyle: containerStyle,
+};

node_modules/@vant/weapp/dist/sticky/index.wxss

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+@import '../common/index.wxss';.van-sticky{position:relative}.van-sticky-wrap--fixed{left:0;position:fixed;right:0}