移动端直接读取文件进行oss上传文件类型问题

• 问题：项目中使用cordova插件读取到视频文件为MediaFile类型直传OSS，报错：_getFileSize requires Buffer/File/String
  - 尝试解决方案1：new Blob(MediaFile) 失败，报错Failed to construct 'Blob'
  - 尝试解决方案2：转ArrayBuffer再转Blob 失败，报错Must provide String/Buffer/ReadableStream for put

	import { File } from "@ionic-native/file";
	let file: ArrayBuffer = await File.readAsArrayBuffer(path, name);
	const buffer = Buffer.from(file);

		- 尝试解决方案3：转ArrayBuffer再转Buffer 成功

		let file: ArrayBuffer = await File.readAsArrayBuffer(path, name);
        const buffer = Buffer.from(file);