how to copy a file from one folder to another in node js?
['// include fs-extra package.', 'var fs = require( "fs-extra");', "var source = 'folderA'", "var destination = 'folderB'", '// copy source folder to destination.', 'fs. copy( source, destination, function ( err) {', 'if ( err){', "console. log( 'An error occured while copying the folder. ')"]