Kopeer

Lean library to copy files and folders recursively, asynchronously.

Install

npm install kopeer

kopeer(source, destination [, options] [, callback])

Infer the type of op by looking at the source file or folder and perform kopeer.directory(..) if source is folder and kopeer.file(..) if source is a file.

kopeer('/files', '/backup', function(err) { /* ... */ });

For available options, check kopeer.file and kopeer.directory below. The options are passed along as they are. Just note that If a callback is not provided, a promise is returned instead.

kopeer.file(source, destination [, options] [, callback])

Copy a file from source to destination, creating intermediate directories as required.

kopeer.file('/files/foo', '/backup/bar', function(err) { /* ... */ });

Usage

• source (String)

  • The path to the file to copy.

• destination (String)

  • The path to the file to write to.

    Note: Any intermediate directories leading up to destination will be created automatically.

    New: As of version 0.2.0, destination can denote a directory. In this case, the destination is resolved to destination/{source-filename}. See the example for more information.

• options (Object) [default: undefined]

  • options.dereference (Bool) [default: false]

    • If given and true, resolve any symlinked files and folders and copy the actual contents. Otherwise, write the linked file as the target file.

  • options.limit (Int) [default: 512]

    • The limit of concurrently opened files. A higher limit is faster but risks EMFILE errors, while a lower limit is slower but safer.

      Only applies if options.dereference === true and the location pointed to by source turns out to be directory. Note that the directory pointed to will also be fully dereferenced.

• callback (Function) [default: undefined]

  • Invoke the given node-style callback with any errors and no result:

    function(err) { /*...*/ }

kopeer.directory(source, destination [, options] [, callback])

Copy a folder recursively from source to destination, creating intermediate directories as required.

kopeer.directory('/files', '/backup', function(err) { /* ... */ });

Usage

• source (String)

  • The path to the directory to copy

• destination (String)

  • The path to the directory to copy to.

    Note: Any intermediate directories leading up to destination will be created automatically.

• options (Object) [default: undefined]

  • options.filter (Function: Filepath -> Bool) [default: noop]

    • Given the target path, decide whether to include this file.

  • options.ignore (String|Array<String>) [default: []] since v1.0.0

    • Given a list of patterns to ignore, create a minimatch filter from each and apply to each path.

  • options.dereference (Bool) [default: false]

    • If true, copy symlinked files and folders into the target file tree.

  • options.rename (Function: Filepath -> Filepath) [default: noop]

    • Given the target path, return a new target path.

  • options.limit (Int) [default: 512]

    • The limit of concurrently opened files.

      A higher limit is faster but risks EMFILE errors, while a lower limit is slower but safer.

• callback (Function) [default: undefined]

  • Invoke the given node-style callback with any errors and no result:

    function(err) { /*...*/ }

Contributing

Business as usual. Get started by running the test suite:

npm install
npm test

Then fix bug / add feature and submit a pull request.