vue中使用七牛上传构建上传策略报错

Question

代码如下

const putPolicy = new qiniu.rs.PutPolicy({

scope: `${bucketName}:${fileName}`,

expires: 60 * 60 * 1,

returnBody: '{"key":"$(key)","hash":"$(etag)","fsize":$(fsize),"bucket":"$(bucket)","name":"$(x:name)"}'

})

报错

Cannot read property 'PutPolicy' of undefined