@npmcorp/move

Move files or directories with rename, falling back to recursive rename/copy on EXDEV errors.

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174May 8, 2020Feb 17, 2017Minified + gzip package size for @npmcorp/move in KB

Readme

@npminc/move

Move files and directories.

const move = require('@npminc/move')
move('/path/to/thing', '/new/path/thing'), err => {
  if (err) throw err
  // thing is now moved!
})

Uses rename to move things as fast as possible.

If you move across devices or on filesystems that don't support renaming large directories. That is, situations that result in rename returning the EXDEV error, then move will fallback to copy + delete.

When recursively copying directories it will first try to rename the contents before falling back to copying. While this will be slightly slower in true cross-device scenarios, it is MUCH faster in cases where the filesystem can't handle directory renames.

When copying ownership is maintained when running as root. Permissions are always maintained. On Windows, if symlinks are unavailable then junctions will be used.

INTERFACE

move(from, to, options) → Promise

Recursively moves from to to and resolves its promise when finished. If to already exists then the promise will be rejected with an EEXIST error.

Starts by trying to rename from to to.

Options are:

  • maxConcurrency – (Default: 1) The maximum number of concurrent copies to do at once.
  • isWindows - (Default: process.platform === 'win32') If true enables Windows symlink semantics. This requires an extra stat to determine if the destination of a symlink is a file or directory. If symlinking a directory fails then we'll try making a junction instead.

Options can also include dependency injection:

  • Promise - (Default: global.Promise) The promise implementation to use, defaults to Node's.
  • fs - (Default: require('fs')) The filesystem module to use. Can be used to use graceful-fs or to inject a mock.
  • writeStreamAtomic - (Default: require('fs-write-stream-atomic')) The implementation of writeStreamAtomic to use. Used to inject a mock.
  • getuid - (Default: process.getuid) A function that returns the current UID. Used to inject a mock.

If you find any bugs or have a feature request, please open an issue on github!

The npm package download data comes from npm's download counts api and package details come from npms.io.