HarmonyOS 中生成Blob对象的方法是new buffer.Blob么，所生成对象是否与Web端的Blob对象一致，如不一致如何将其转为Web端的

示例参考：

import { buffer } from '@kit.ArkTS';

let blob: buffer.Blob = new buffer.Blob(['a', 'b', 'c']);
let pro = blob.arrayBuffer();
pro.then((val: ArrayBuffer) => {
  let uintarr: Uint8Array = new Uint8Array(val);
  console.log(uintarr.toString());
});
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可参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-buffer-V5#arraybuffer