Because some major folder recursive copy package are unable to handle big file (greater than 0x1fffffe8 characters). Better Copy will copy anything regardless it size!
Another file copier may hit your RAM harder the larger the file you copy. Better file copier will ensure that won't happen!
More customize event on the process of copying, such as onBeforeCopy, or onAfterCopy, etc
Options to switch into the OS' native file copy command
Because I'm bored!

Usage

Bare minimum command :

const bCopy = require('better-copy');

//bCopy(from, to, options, callback)
bCopy('/path/to/your/moreThan2TBFiles.ext', '/path/to/destination/file.ext')

// the process is asynchronous
await bCopy('/path/to/your/moreThan2TBFiles.ext', '/path/to/destination/file.ext')

const bCopy = require('better-copy');

//use callback instead of the default promise
bCopy('/path/to/your/moreThan2TBFiles.ext', '/path/to/destination/file.ext', 
(result) => {
	console.log(result)
})


//...is equal with :
bCopy('/path/to/your/moreThan2TBFiles.ext', '/path/to/destination/file.ext')
.then((result) => {
	console.log(result)
})

Resolved result is an iterable object containing pairs of source & destination path :

{
    "/source/path/1" : [
	    "/destination/path/1",
	    "/destination/path/2"
	    ...
	    ]
	"/source/path/2" : [...]
}

A single command to copy both file or folders :

const bCopy = require('better-copy');

// copy file to a directory, assuming the same file name
bCopy('/path/to/your/file.txt', '/path/to/destination/folder');

// copy directory recursively
bCopy('/path/to/your/folder', '/path/to/destination/folder');

Copy from & into multiple file/directory at once:

const bCopy = require('better-copy');

// use an array as parameter for more than one input path
bCopy(['/path/to/your/folder1', '/path/to/some/file.txt'], '/path/to/destination/folder');

// Copy some file from multiple source into multiple directory
bCopy(['/path/to/your/folder1', '/path/to/some/file.txt'], 
	[
		'/path/to/destination/folder', 
		'/path/to/other/folder'
	]);

Get content of directory recursively Walk a directory

const bCopy = require('better-copy');

var dirContent = await bCopy.walk("your/directory/path");

Walk a directory

const bCopy = require('better-copy');

// use an array as parameter for more than one input path
bCopy.walk("your/directory/path", {
    onFile : function(filepath, stats) {
        // when meet a file
        console.log("File:", arguments);
    },
    onDir : function(filepath, stats) {
        // when meet a folder
        console.log("folder", arguments);
    }
})
.then((folderContents) => {
    // the recursive content of folder in array format
    console.log("Walk finished", folderContents)
})

Options

Default options

// The default value of the options parameter
bCopy('/path/to/your/folder1', '/path/to/destination/folder', 
	{
		filter:function(from, to) {
			// return false to exclude
			// return true to include
			return true;
		},
		onAfterCopy : function(from, to) {},
		onBeforeCopy : function(from, to) {},
		overwrite : false, // will overwrite the target if set true
		useShell : false, // use shell copy if possible (not all OS are supported)
				
	});

Filtering example

// Copy only the zip file
var path = require('path');
copy('F:/source/', ['F:/destination/'], {
	filter:function(from, to) {
		console.log("handling ", from);
		if (path.extname(from).toLowerCase() == '.zip') {
			console.log("extension is zip, skipping")
			return true;
		}
		return false;
	}
})
.then(function(result) {
	console.log("Copied files :", result)
})

Example : onAfterCopy

// delete source file after successfull copy (aka: move)
bCopy('/path/to/your/folder1', '/path/to/destination/folder', 
	{
		onAfterCopy : function(from, to) {
			fs.unlink(from);
		},
	});

License

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.