常用的文件操作类
安装：
npm install files-helper
##APIs
function getFileList(filePath: string, opt: any): Promise;
function copyFile(src: string, dest: string, opt:any): Promise;
function cancelCopy(id: string): Promise;
function removeFile(filePath:string): Promise;
function renameFile(filePath:string, newName:string): Promise;
function searchFiles(dirPath:string , seo:string): Promise;
Example
copyFile(path.join(__dirname, 'src'), path.join(__dirname, 'temp')).then(res => {
console.log(JSON.stringify(res));
});