提交初始版本，使用vant ui库

miniprogram_npm/@vant/weapp/goods-action/index.d.ts

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+export {};

miniprogram_npm/@vant/weapp/goods-action/index.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+var component_1 = require("../common/component");
+var relation_1 = require("../common/relation");
+(0, component_1.VantComponent)({
+    relation: (0, relation_1.useChildren)('goods-action-button', function () {
+        this.children.forEach(function (item) {
+            item.updateStyle();
+        });
+    }),
+    props: {
+        safeAreaInsetBottom: {
+            type: Boolean,
+            value: true,
+        },
+    },
+});

miniprogram_npm/@vant/weapp/goods-action/index.json

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+{
+  "component": true
+}

miniprogram_npm/@vant/weapp/goods-action/index.wxml

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+<wxs src="../wxs/utils.wxs" module="utils" />
+
+<view class="custom-class {{ utils.bem('goods-action', { safe: safeAreaInsetBottom }) }}">
+  <slot />
+</view>

miniprogram_npm/@vant/weapp/goods-action/index.wxss

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+@import '../common/index.wxss';.van-goods-action{align-items:center;background-color:var(--goods-action-background-color,#fff);bottom:0;box-sizing:initial;display:flex;height:var(--goods-action-height,50px);left:0;position:fixed;right:0}.van-goods-action--safe{padding-bottom:env(safe-area-inset-bottom)}