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node_modules/recursive-copy/README.md
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node_modules/recursive-copy/README.md
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# recursive-copy
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[](https://www.npmjs.com/package/recursive-copy)
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[](https://travis-ci.org/timkendrick/recursive-copy)
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[](https://ci.appveyor.com/project/timkendrick/recursive-copy/branch/master)
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> Simple, flexible file copy utility
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## Features
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- Recursively copy whole directory hierarchies
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- Choose which files are copied by passing a filter function, regular expression or glob
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- Rename files dynamically, including changing the output path
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- Transform file contents using streams
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- Choose whether to overwrite existing files
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- Choose whether to copy system files
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- Filters out [junk](https://www.npmjs.com/package/junk) files by default
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- Uses [graceful-fs](https://www.npmjs.com/package/graceful-fs) and [mkdirp](https://www.npmjs.com/package/mkdirp) to avoid filesystem errors
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- Emits start, finish and error events for each file that is processed
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- Optional promise-based interface
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## Examples
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#### Node-style callback interface
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```javascript
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var copy = require('recursive-copy');
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copy('src', 'dest', function(error, results) {
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if (error) {
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console.error('Copy failed: ' + error);
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} else {
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console.info('Copied ' + results.length + ' files');
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}
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});
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```
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#### Promise interface
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```javascript
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var copy = require('recursive-copy');
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copy('src', 'dest')
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.then(function(results) {
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console.info('Copied ' + results.length + ' files');
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})
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.catch(function(error) {
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console.error('Copy failed: ' + error);
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});
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```
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#### Advanced options
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```javascript
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var copy = require('recursive-copy');
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var path = require('path');
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var through = require('through2');
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var options = {
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overwrite: true,
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expand: true,
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dot: true,
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junk: true,
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filter: [
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'**/*',
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'!.htpasswd'
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],
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rename: function(filePath) {
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return filePath + '.orig';
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},
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transform: function(src, dest, stats) {
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if (path.extname(src) !== '.txt') { return null; }
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return through(function(chunk, enc, done) {
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var output = chunk.toString().toUpperCase();
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done(null, output);
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});
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}
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};
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copy('src', 'dest', options)
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.on(copy.events.COPY_FILE_START, function(copyOperation) {
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console.info('Copying file ' + copyOperation.src + '...');
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})
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.on(copy.events.COPY_FILE_COMPLETE, function(copyOperation) {
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console.info('Copied to ' + copyOperation.dest);
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})
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.on(copy.events.ERROR, function(error, copyOperation) {
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console.error('Unable to copy ' + copyOperation.dest);
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})
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.then(function(results) {
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console.info(results.length + ' file(s) copied');
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})
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.catch(function(error) {
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return console.error('Copy failed: ' + error);
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});
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```
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## Usage
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### `copy(src, dest, [options], [callback])`
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Recursively copy files and folders from `src` to `dest`
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#### Arguments:
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| Name | Type | Required | Default | Description |
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| ---- | ---- | -------- | ------- | ----------- |
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| `src` | `string` | Yes | N/A | Source file/folder path |
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| `dest` | `string` | Yes | N/A | Destination file/folder path |
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| `options.overwrite` | `boolean` | No | `false` | Whether to overwrite destination files |
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| `options.expand` | `boolean` | No | `false` | Whether to expand symbolic links |
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| `options.dot` | `boolean` | No | `false` | Whether to copy files beginning with a `.` |
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| `options.junk` | `boolean` | No | `false` | Whether to copy OS junk files (e.g. `.DS_Store`, `Thumbs.db`) |
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| `options.filter` | `function`, `RegExp`, `string`, `array` | No | `null` | Filter function / regular expression / glob that determines which files to copy (uses [maximatch](https://www.npmjs.com/package/maximatch)) |
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| `options.rename` | `function` | No | `null` | Function that maps source paths to destination paths |
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| `options.transform` | `function` | No | `null` | Function that returns a transform stream used to modify file contents |
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| `options.results` | `boolean` | No | `true` | Whether to return an array of copy results |
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| `options.concurrency` | `number` | No | `255` | Maximum number of simultaneous copy operations |
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| `options.debug` | `boolean` | No | `false` | Whether to log debug information |
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| `callback` | `function` | No | `null` | Callback, invoked on success/failure |
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#### Returns:
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`Promise<Array>` Promise, fulfilled with array of copy results:
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```json
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[
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{
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"src": "/path/to/src",
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"dest": "/path/to/dest",
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"stats": <Stats>
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},
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{
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"src": "/path/to/src/file.txt",
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"dest": "/path/to/dest/file.txt",
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"stats": <Stats>
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},
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{
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"src": "/path/to/src/subfolder",
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"dest": "/path/to/dest/subfolder",
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"stats": <Stats>
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},
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{
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"src": "/path/to/src/subfolder/nested.txt",
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"dest": "/path/to/dest/subfolder/nested.txt",
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"stats": <Stats>
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}
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]
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```
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## Events
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The value returned by the `copy` function implements the `EventEmitter` interface, and emits the following events:
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| Event | Handler signature |
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| ----- | ----------------- |
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| `copy.events.ERROR` | `function(error, ErrorInfo)` |
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| `copy.events.COMPLETE` | `function(Array<CopyOperation>)` |
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| `copy.events.CREATE_DIRECTORY_START` | `function(CopyOperation)` |
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| `copy.events.CREATE_DIRECTORY_ERROR` | `function(error, CopyOperation)` |
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| `copy.events.CREATE_DIRECTORY_COMPLETE` | `function(CopyOperation)` |
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| `copy.events.CREATE_SYMLINK_START` | `function(CopyOperation)` |
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| `copy.events.CREATE_SYMLINK_ERROR` | `function(error, CopyOperation)` |
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| `copy.events.CREATE_SYMLINK_COMPLETE` | `function(CopyOperation)` |
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| `copy.events.COPY_FILE_START` | `function(CopyOperation)` |
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| `copy.events.COPY_FILE_ERROR` | `function(error, CopyOperation)` |
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| `copy.events.COPY_FILE_COMPLETE` | `function(CopyOperation)` |
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...where the types referred to in the handler signature are as follows:
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### `ErrorInfo`
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| Property | Type | Description |
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| -------- | ---- | ----------- |
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| `src` | `string` | Source path of the file/folder/symlink that failed to copy |
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| `dest` | `string` | Destination path of the file/folder/symlink that failed to copy |
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### `CopyOperation`
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| Property | Type | Description |
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| -------- | ---- | ----------- |
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| `src` | `string` | Source path of the relevant file/folder/symlink |
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| `dest` | `string` | Destination path of the relevant file/folder/symlink |
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| `stats ` | `fs.Stats` | Stats for the relevant file/folder/symlink |
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