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- # copy-concurrently
-
- Copy files, directories and symlinks
-
- ```
- const copy = require('copy-concurrently')
- copy('/path/to/thing', '/new/path/thing').then(() => {
- // this is now copied
- }).catch(err => {
- // oh noooo
- })
- ```
-
- Copies files, directories and symlinks. Ownership is maintained when
- running as root, permissions are always maintained. On Windows, if symlinks
- are unavailable then junctions will be used.
-
- ## PUBLIC INTERFACE
-
- ### copy(from, to, [options]) → Promise
-
- Recursively copies `from` to `to` and resolves its promise when finished.
- If `to` already exists then the promise will be rejected with an `EEXIST`
- error.
-
- Options are:
-
- * maxConcurrency – (Default: `1`) The maximum number of concurrent copies to do at once.
- * recurseWith - (Default: `copy.item`) The function to call on each file after recursing into a directory.
- * 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.
-
- ## EXTENSION INTERFACE
-
- Ordinarily you'd only call `copy` above. But it's possible to use it's
- component functions directly. This is useful if, say, you're writing
- [move-concurently](https://npmjs.com/package/move-concurrently).
-
- ### copy.file(from, to, options) → Promise
-
- Copies an ordinary file `from` to destination `to`. Uses
- `fs-write-stream-atomic` to ensure that the file is either entirely copied
- or not at all.
-
- Options are:
-
- * uid, gid - (Optional) If `getuid()` is `0` then this and gid will be used to
- set the user and group of `to`. If uid is present then gid must be too.
- * mode - (Optional) If set then `to` will have its perms set to `mode`.
- * fs - (Default: `require('fs')`) The filesystem module to use. Can be used
- to use `graceful-fs` or to inject a mock.
- * Promise - (Default: `global.Promise`) The promise implementation to use, defaults to Node's.
- * writeStreamAtomic - (Default `require('fs-write-stream-atomic')`) The
- implementation of `writeStreamAtomic` to use. Used to inject a mock.
-
- ### copy.symlink(from, to, options) → Promise
-
- Copies a symlink `from` to destination `to`. If you're using Windows and
- symlinking fails and what you're linking is a directory then junctions will
- be tried instead.
-
- Options are:
-
- * top - The top level the copy is being run from. This is used to determine
- if the symlink destination is within the set of files we're copying or
- outside it.
- * fs - (Default: `require('fs')`) The filesystem module to use. Can be used
- to use `graceful-fs` or to inject a mock.
- * Promise - (Default: `global.Promise`) The promise implementation to use, defaults to Node's.
- * 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.
-
- ### copy.recurse(from, to, options) → Promise
-
- Reads all of the files in directory `from` and adds them to the `queue`
- using `recurseWith` (by default `copy.item`).
-
- Options are:
-
- * queue - A [`run-queue`](https://npmjs.com/package/run-queue) object to add files found inside `from` to.
- * recurseWith - (Default: `copy.item`) The function to call on each file after recursing into a directory.
- * uid, gid - (Optional) If `getuid()` is `0` then this and gid will be used to
- set the user and group of `to`. If uid is present then gid must be too.
- * mode - (Optional) If set then `to` will have its perms set to `mode`.
- * fs - (Default: `require('fs')`) The filesystem module to use. Can be used
- to use `graceful-fs` or to inject a mock.
- * getuid - (Default: `process.getuid`) A function that returns the current UID. Used to inject a mock.
-
- ### copy.item(from, to, options) → Promise
-
- Copies some kind of `from` to destination `to`. This looks at the filetype
- and calls `copy.file`, `copy.symlink` or `copy.recurse` as appropriate.
-
- Symlink copies are queued with a priority such that they happen after all
- file and directory copies as you can't create a junction on windows to a
- file that doesn't exist yet.
-
- Options are:
-
- * top - The top level the copy is being run from. This is used to determine
- if the symlink destination is within the set of files we're copying or
- outside it.
- * queue - The [`run-queue`](https://npmjs.com/package/run-queue) object to
- pass to `copy.recurse` if `from` is a directory.
- * recurseWith - (Default: `copy.item`) The function to call on each file after recursing into a directory.
- * uid, gid - (Optional) If `getuid()` is `0` then this and gid will be used to
- set the user and group of `to`. If uid is present then gid must be too.
- * mode - (Optional) If set then `to` will have its perms set to `mode`.
- * fs - (Default: `require('fs')`) The filesystem module to use. Can be used
- to use `graceful-fs` or to inject a mock.
- * getuid - (Default: `process.getuid`) A function that returns the current UID. Used to inject a mock.
- * 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.
- * Promise - (Default: `global.Promise`) The promise implementation to use, defaults to Node's.
- * writeStreamAtomic - (Default `require('fs-write-stream-atomic')`) The
- implementation of `writeStreamAtomic` to use. Used to inject a mock.
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