unicloud 支持async await么

从腾讯云开发过来 ，腾讯是支持的，发现unicloud的例子是基于promise then的，比较繁琐，故有此一问,我看了云函数是支持的，但是index.vue还是使用的promise then

<template>  
    <view class="content">  
        <view class="title">uniCloud 基础示例</view>  
        <view class="tips">  
            <view>1.在cloudfunctions目录右键创建并关联服务空间</view>  
            <view>2.在cloudfunctions目录内db_init.json上右键初始化云数据库</view>  
            <view>3.在cloudfunctions目录右键选择“上传所有云函数”</view>  
            <view>开始愉快的体验uniCloud吧！</view>  
        </view>  
        <view class="btn-list">  
            <button type="primary" @click="add">新增一条数据</button>  
            <button type="primary" @click="remove">删除一条数据</button>  
            <button type="primary" @click="update">修改数据</button>  
            <button type="primary" @click="get">查询前10条数据</button>  
            <button type="primary" @click="useCommon">使用公用模块</button>  
            <button type="primary" @click="upload">上传文件</button>  
        </view>  
    </view>  
</template>  

<script>  
    export default {  
        data() {  
            return {}  
        },  
        methods: {  
            add() {  
                uni.showLoading({  
                    title: '处理中...'  
                })  
                uniCloud.callFunction({  
                    name: 'add',  
                    data: {  
                        name: 'DCloud',  
                        subType: 'uniCloud',  
                        createTime: Date.now()  
                    }  
                }).then((res) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `成功添加一条数据，文档id为：${res.result.id}`,  
                        showCancel: false  
                    })  
                    console.log(res)  
                }).catch((err) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `添加数据失败，错误信息为：${err.message}`,  
                        showCancel: false  
                    })  
                    console.error(err)  
                })  
            },  
            remove() {  
                uni.showLoading({  
                    title: '处理中...'  
                })  
                uniCloud.callFunction({  
                    name: 'remove'  
                }).then((res) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: res.result.msg,  
                        showCancel: false  
                    })  
                    console.log(res)  
                }).catch((err) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `删除失败，错误信息为：${err.message}`,  
                        showCancel: false  
                    })  
                    console.error(err)  
                })  
            },  
            update() {  
                uni.showLoading({  
                    title: '处理中...'  
                })  
                uniCloud.callFunction({  
                    name: 'update',  
                    data: {  
                        name: 'DCloud',  
                        subType: 'html 5+',  
                        createTime: Date.now()  
                    }  
                }).then((res) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: res.result.msg,  
                        showCancel: false  
                    })  
                    console.log(res)  
                }).catch((err) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `更新操作执行失败，错误信息为：${err.message}`,  
                        showCancel: false  
                    })  
                    console.error(err)  
                })  
            },  
            get() {  
                uni.showLoading({  
                    title: '处理中...'  
                })  
                uniCloud.callFunction({  
                    name: 'get'  
                }).then((res) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `查询成功，获取数据列表为：${JSON.stringify(res.result.data)}`,  
                        showCancel: false  
                    })  
                    console.log(res)  
                }).catch((err) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `查询失败，错误信息为：${err.message}`,  
                        showCancel: false  
                    })  
                    console.error(err)  
                })  
            },  
            useCommon() {  
                console.log('请确保自己已经阅读并按照公用模块文档操作 https://uniapp.dcloud.io/uniCloud/cf-common')  
                uniCloud.callFunction({  
                    name: 'useCommon'  
                }).then((res) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: '云函数useCommon返回结果：' + JSON.stringify(res.result),  
                        showCancel: false  
                    })  
                    console.log(res)  
                }).catch((err) => {  
                    uni.hideLoading()  
                    uni.showModal({  
                        content: `云函数useCommon执行失败，错误信息为：${err.message}`,  
                        showCancel: false  
                    })  
                    console.error(err)  
                })  
            },  
            upload() {  
                new Promise((resolve, reject) => {  
                    uni.chooseImage({  
                        chooseImage: 1,  
                        success: res => {  
                            const path = res.tempFilePaths[0]  
                            let ext  
                            // #ifdef H5  
                            ext = res.tempFiles[0].name.split('.').pop()  
                            // #endif  
                            // #ifndef H5  
                            ext = res.tempFilePaths[0].split('.').pop()  
                            // #endif  
                            const options = {  
                                filePath: path,  
                                cloudPath: Date.now() + '.' + ext  
                            }  
                            resolve(options)  
                        },  
                        fail: () => {  
                            reject(new Error('Fail_Cancel'))  
                        }  
                    })  
                }).then((options) => {  
                    uni.showLoading({  
                        title: '文件上传中...'  
                    })  
                    return uniCloud.uploadFile({  
                        ...options,  
                        onUploadProgress(e) {  
                            console.log(e)  
                        }  
                    })  
                }).then(res => {  
                    uni.hideLoading()  
                    console.log(res);  
                    uni.showModal({  
                        content: '图片上传成功，fileId为：' + res.fileID,  
                        showCancel: false  
                    })  
                }).catch((err) => {  
                    uni.hideLoading()  
                    console.log(err);  
                    if (err.message !== 'Fail_Cancel') {  
                        uni.showModal({  
                            content: `图片上传失败，错误信息为：${err.message}`,  
                            showCancel: false  
                        })  
                    }  
                })  
            }  
        }  
    }  
</script>  

<style>  
    .content {  
        padding-bottom: 30px;  
    }  

    .title {  
        font-weight: bold;  
        text-align: center;  
        padding: 20px 0px;  
        font-size: 20px;  
    }  

    .tips {  
        color: #999999;  
        font-size: 14px;  
        padding: 20px 30px;  
    }  

    .btn-list {  
        padding: 0px 30px;  
    }  

    .btn-list button {  
        margin-bottom: 20px;  
    }  

    .upload-preview {  
        width: 100%;  
    }  
</style>