await有时候貌似不起作用

let buffer1:ArrayBuffer|null=null
          if (this.imageUri){
            buffer1 = this.readFileToBuffer(this.imageUri)
            promptAction.showToast({ message: buffer1 ? buffer1.byteLength.toString() : '0' })
          }else {
            promptAction.showToast({message:'0'})
          }

          const httpRe = http.createHttp()
          const result = httpRe.request(...,{...})
          const result1=await result
          promptAction.showToast({message:result1.result.toString()})