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263 lines
7.3 KiB
263 lines
7.3 KiB
<table><thead>
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<tr>
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<th>Linux</th>
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<th>OS X</th>
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<th>Windows</th>
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<th>Coverage</th>
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<th>Downloads</th>
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</tr>
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</thead><tbody><tr>
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<td colspan="2" align="center">
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<a href="https://travis-ci.org/kaelzhang/node-ignore">
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<img
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src="https://travis-ci.org/kaelzhang/node-ignore.svg?branch=master"
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alt="Build Status" /></a>
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</td>
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<td align="center">
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<a href="https://ci.appveyor.com/project/kaelzhang/node-ignore">
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<img
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src="https://ci.appveyor.com/api/projects/status/github/kaelzhang/node-ignore?branch=master&svg=true"
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alt="Windows Build Status" /></a>
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</td>
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<td align="center">
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<a href="https://codecov.io/gh/kaelzhang/node-ignore">
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<img
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src="https://codecov.io/gh/kaelzhang/node-ignore/branch/master/graph/badge.svg"
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alt="Coverage Status" /></a>
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</td>
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<td align="center">
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<a href="https://www.npmjs.org/package/ignore">
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<img
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src="http://img.shields.io/npm/dm/ignore.svg"
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alt="npm module downloads per month" /></a>
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</td>
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</tr></tbody></table>
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# ignore
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`ignore` is a manager, filter and parser which implemented in pure JavaScript according to the .gitignore [spec](http://git-scm.com/docs/gitignore).
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Pay attention that [`minimatch`](https://www.npmjs.org/package/minimatch) does not work in the gitignore way. To filter filenames according to .gitignore file, I recommend this module.
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##### Tested on
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- Linux + Node: `0.8` - `7.x`
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- Windows + Node: `0.10` - `7.x`, node < `0.10` is not tested due to the lack of support of appveyor.
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Actually, `ignore` does not rely on any versions of node specially.
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## Table Of Main Contents
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- [Usage](#usage)
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- [Guide for 2.x -> 3.x](#upgrade-2x---3x)
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- [Contributing](#contributing)
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- Related Packages
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- [`glob-gitignore`](https://www.npmjs.com/package/glob-gitignore) matches files using patterns and filters them according to gitignore rules.
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## Usage
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```js
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const ignore = require('ignore')
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const ig = ignore().add(['.abc/*', '!.abc/d/'])
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```
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### Filter the given paths
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```js
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const paths = [
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'.abc/a.js', // filtered out
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'.abc/d/e.js' // included
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]
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ig.filter(paths) // ['.abc/d/e.js']
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ig.ignores('.abc/a.js') // true
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```
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### As the filter function
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```js
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paths.filter(ig.createFilter()); // ['.abc/d/e.js']
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```
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### Win32 paths will be handled
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```js
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ig.filter(['.abc\\a.js', '.abc\\d\\e.js'])
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// if the code above runs on windows, the result will be
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// ['.abc\\d\\e.js']
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```
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## Why another ignore?
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- `ignore` is a standalone module, and is much simpler so that it could easy work with other programs, unlike [isaacs](https://npmjs.org/~isaacs)'s [fstream-ignore](https://npmjs.org/package/fstream-ignore) which must work with the modules of the fstream family.
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- `ignore` only contains utility methods to filter paths according to the specified ignore rules, so
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- `ignore` never try to find out ignore rules by traversing directories or fetching from git configurations.
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- `ignore` don't cares about sub-modules of git projects.
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- Exactly according to [gitignore man page](http://git-scm.com/docs/gitignore), fixes some known matching issues of fstream-ignore, such as:
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- '`/*.js`' should only match '`a.js`', but not '`abc/a.js`'.
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- '`**/foo`' should match '`foo`' anywhere.
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- Prevent re-including a file if a parent directory of that file is excluded.
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- Handle trailing whitespaces:
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- `'a '`(one space) should not match `'a '`(two spaces).
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- `'a \ '` matches `'a '`
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- All test cases are verified with the result of `git check-ignore`.
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## Methods
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### .add(pattern)
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### .add(patterns)
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- **pattern** `String|Ignore` An ignore pattern string, or the `Ignore` instance
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- **patterns** `Array.<pattern>` Array of ignore patterns.
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Adds a rule or several rules to the current manager.
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Returns `this`
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Notice that a line starting with `'#'`(hash) is treated as a comment. Put a backslash (`'\'`) in front of the first hash for patterns that begin with a hash, if you want to ignore a file with a hash at the beginning of the filename.
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```js
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ignore().add('#abc').ignores('#abc') // false
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ignore().add('\#abc').ignores('#abc') // true
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```
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`pattern` could either be a line of ignore pattern or a string of multiple ignore patterns, which means we could just `ignore().add()` the content of a ignore file:
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```js
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ignore()
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.add(fs.readFileSync(filenameOfGitignore).toString())
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.filter(filenames)
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```
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`pattern` could also be an `ignore` instance, so that we could easily inherit the rules of another `Ignore` instance.
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### <strike>.addIgnoreFile(path)</strike>
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REMOVED in `3.x` for now.
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To upgrade `ignore@2.x` up to `3.x`, use
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```js
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const fs = require('fs')
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if (fs.existsSync(filename)) {
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ignore().add(fs.readFileSync(filename).toString())
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}
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```
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instead.
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### .ignores(pathname)
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> new in 3.2.0
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Returns `Boolean` whether `pathname` should be ignored.
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```js
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ig.ignores('.abc/a.js') // true
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```
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### .filter(paths)
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Filters the given array of pathnames, and returns the filtered array.
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- **paths** `Array.<path>` The array of `pathname`s to be filtered.
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**NOTICE** that:
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- `pathname` should be a string that have been `path.join()`ed, or the return value of `path.relative()` to the current directory.
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```js
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// WRONG
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ig.ignores('./abc')
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// WRONG, for it will never happen.
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// If the gitignore rule locates at the root directory,
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// `'/abc'` should be changed to `'abc'`.
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// ```
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// path.relative('/', '/abc') -> 'abc'
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// ```
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ig.ignores('/abc')
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// Right
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ig.ignores('abc')
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// Right
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ig.ignores(path.join('./abc')) // path.join('./abc') -> 'abc'
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```
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- In other words, each `pathname` here should be a relative path to the directory of the git ignore rules.
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Suppose the dir structure is:
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```
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/path/to/your/repo
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|-- a
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| |-- a.js
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|-- .b
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|-- .c
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|-- .DS_store
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```
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Then the `paths` might be like this:
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```js
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[
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'a/a.js'
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'.b',
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'.c/.DS_store'
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]
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```
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Usually, you could use [`glob`](http://npmjs.org/package/glob) with `option.mark = true` to fetch the structure of the current directory:
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```js
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const glob = require('glob')
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glob('**', {
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// Adds a / character to directory matches.
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mark: true
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}, (err, files) => {
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if (err) {
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return console.error(err)
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}
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let filtered = ignore().add(patterns).filter(files)
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console.log(filtered)
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})
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```
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### .createFilter()
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Creates a filter function which could filter an array of paths with `Array.prototype.filter`.
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Returns `function(path)` the filter function.
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****
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## Upgrade 2.x -> 3.x
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- All `options` of 2.x are unnecessary and removed, so just remove them.
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- `ignore()` instance is no longer an [`EventEmitter`](nodejs.org/api/events.html), and all events are unnecessary and removed.
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- `.addIgnoreFile()` is removed, see the [.addIgnoreFile](#addignorefilepath) section for details.
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****
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## Contributing
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The code of `node-ignore` is based on es6 and babel, but babel and its preset is not included in the `dependencies` field of package.json, so that the installation process of test cases will not fail in older versions of node.
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So use `bash install.sh` to install dependencies and `bash test.sh` to run test cases in your local machine.
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#### Collaborators
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- [SamyPesse](https://github.com/SamyPesse) *Samy Pessé*
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- [azproduction](https://github.com/azproduction) *Mikhail Davydov*
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- [TrySound](https://github.com/TrySound) *Bogdan Chadkin*
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- [JanMattner](https://github.com/JanMattner) *Jan Mattner*
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