如何将ArrayBuffer 转换成 Uint8ClampedArray？

• 需求的场景描述（希望解决的问题）

将云API生成的小程序二维码 arraybuffer 变成Uint8ClampedArray  ，然后通过画布保存下来。

const data = new Uint8ClampedArray(this.data.imageByteArray);     wx.canvasPutImageData({       canvasId: 'firstCanvas',       x: 0,       y: 0,       width: 308,       height:308,       data: data,       success(res) {         wx.canvasToTempFilePath({           x: 0,           y: 0,           width: 308,           height: 308,           destWidth: 308,           destHeight: 308,           canvasId: 'firstCanvas',           success(res) {             console.log(res.tempFilePath)           }         })       },       fail(e){         console.error(e);       }     })

• 希望提供的能力