# micromatch [](http://badge.fury.io/js/micromatch) [](https://travis-ci.org/jonschlinkert/micromatch)
> Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. Just use `micromatch.isMatch()` instead of `minimatch()`, or use `micromatch()` instead of `multimatch()`.
## Install
Install with [npm](https://www.npmjs.com/)
```sh
$ npm i micromatch --save
```
## Table of contents
* [Features](#features)
* [Usage](#usage)
* [Switch from minimatch](#switch-from-minimatch)
* [Methods](#methods)
- [.isMatch](#ismatch)
- [.contains](#contains)
- [.matcher](#matcher)
- [.filter](#filter)
- [.any](#any)
- [.expand](#expand)
- [.makeRe](#makere)
* [Options](#options)
- [options.unixify](#optionsunixify)
- [options.dot](#optionsdot)
- [options.unescape](#optionsunescape)
- [options.nodupes](#optionsnodupes)
- [options.matchBase](#optionsmatchbase)
- [options.nobraces](#optionsnobraces)
- [options.nobrackets](#optionsnobrackets)
- [options.noextglob](#optionsnoextglob)
- [options.nocase](#optionsnocase)
- [options.nonull](#optionsnonull)
- [options.cache](#optionscache)
* [Other features](#other-features)
- [Extended globbing](#extended-globbing)
+ [extglobs](#extglobs)
+ [brace expansion](#brace-expansion)
+ [regex character classes](#regex-character-classes)
+ [regex groups](#regex-groups)
+ [POSIX bracket expressions](#posix-bracket-expressions)
* [Notes](#notes)
* [Benchmarks](#benchmarks)
* [Run tests](#run-tests)
* [Contributing](#contributing)
* [Related](#related)
* [Author](#author)
* [License](#license)
_(Table of contents generated by [verb](https://github.com/verbose/verb))_
## Features
Micromatch is [10-55x faster](#benchmarks) than [minimatch](https://github.com/isaacs/minimatch), resulting from a combination of caching, tokenization, parsing, runtime compilation and regex optimization strategies.
* [Drop-in replacement](#switch-from-minimatch) for [minimatch](https://github.com/isaacs/minimatch) and [multimatch](https://github.com/sindresorhus/multimatch)
* Built-in support for multiple glob patterns, like `['foo/*.js', '!bar.js']`
* Better support for the Bash 4.3 specification, and less buggy
* Extensive [unit tests](./test) (approx. 1,300 tests). Minimatch fails many of the tests.
**Mainstream glob features:**
* [Brace Expansion](https://github.com/jonschlinkert/braces) (`foo/bar-{1..5}.md`, `one/{two,three}/four.md`)
* Typical glob patterns, like `**/*`, `a/b/*.js`, or `['foo/*.js', '!bar.js']`
**Extended globbing features:**
* Logical `OR` (`foo/bar/(abc|xyz).js`)
* Regex character classes (`foo/bar/baz-[1-5].js`)
* POSIX [bracket expressions](https://github.com/jonschlinkert/expand-brackets) (`**/[[:alpha:][:digit:]]/`)
* [extglobs](https://github.com/jonschlinkert/extglob) (`**/+(x|y)`, `!(a|b)`, etc)
You can combine these to create whatever matching patterns you need.
## Usage
```js
var mm = require('micromatch');
mm(array, patterns);
```
**Examples**
```js
mm(['a.js', 'b.md', 'c.txt'], '*.{js,txt}');
//=> ['a.js', 'c.txt']
```
**Multiple patterns**
Multiple patterns can also be passed:
```js
mm(['a.md', 'b.js', 'c.txt', 'd.json'], ['*.md', '*.txt']);
//=> ['a.md', 'c.txt']
```
**Negation patterns:**
Behavior;
* when the pattern is a string, [minimatch](https://github.com/isaacs/minimatch) behavior is used, so patterns are **inclusive by default**.
* when an array of patterns is passed, [multimatch](https://github.com/sindresorhus/multimatch) behavior is used, so patterns are **exclusive by default**
```js
mm(['a.js', 'b.md', 'c.txt'], '!*.{js,txt}');
//=> ['b.md']
mm(['a.md', 'b.js', 'c.txt', 'd.json'], ['*.*', '!*.{js,txt}']);
//=> ['a.md', 'd.json']
```
## Switch from minimatch
> Use `micromatch.isMatch()` instead of `minimatch()`
**Minimatch**
The main `minimatch()` function returns true/false for a single file path and pattern:
```js
var minimatch = require('minimatch');
minimatch('foo.js', '*.js');
//=> 'true'
```
**Micromatch**
With micromatch, `.isMatch()` to get the same result:
```js
var mm = require('micromatch');
mm.isMatch('foo.js', '*.js');
//=> 'true'
```
This implementation difference is necessary since the main `micromatch()` method supports matching on multiple globs, with behavior similar to [multimatch](https://github.com/sindresorhus/multimatch).
## Methods
```js
var mm = require('micromatch');
```
### .isMatch
```js
mm.isMatch(filepath, globPattern);
```
Returns true if a file path matches the given glob pattern.
**Example**
```js
mm.isMatch('.verb.md', '*.md');
//=> false
mm.isMatch('.verb.md', '*.md', {dot: true});
//=> true
```
### .contains
Returns true if any part of a file path matches the given glob pattern. Think of this is "has path" versus "is path".
**Example**
`.isMatch()` would return false for both of the following:
```js
mm.contains('a/b/c', 'a/b');
//=> true
mm.contains('a/b/c', 'a/*');
//=> true
```
### .matcher
Returns a function for matching using the supplied pattern. e.g. create your own "matcher". The advantage of this method is that the pattern can be compiled outside of a loop.
**Pattern**
Can be any of the following:
* `glob/string`
* `regex`
* `function`
**Example**
```js
var isMatch = mm.matcher('*.md');
var files = [];
['a.md', 'b.txt', 'c.md'].forEach(function(fp) {
if (isMatch(fp)) {
files.push(fp);
}
});
```
### .filter
Returns a function that can be passed to `Array#filter()`.
**Params**
* `patterns` **{String|Array}**:
**Examples**
Single glob:
```js
var fn = mm.filter('*.md');
['a.js', 'b.txt', 'c.md'].filter(fn);
//=> ['c.md']
var fn = mm.filter('[a-c]');
['a', 'b', 'c', 'd', 'e'].filter(fn);
//=> ['a', 'b', 'c']
```
Array of glob patterns:
```js
var arr = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15];
var fn = mm.filter(['{1..10}', '![7-9]', '!{3..4}']);
arr.filter(fn);
//=> [1, 2, 5, 6, 10]
```
_(Internally this function generates the matching function by using the [matcher](#matcher) method. You can use the [matcher](#matcher) method directly to create your own filter function)_
### .any
Returns true if a file path matches any of the given patterns.
```js
mm.any(filepath, patterns, options);
```
**Params**
* filepath `{String}`: The file path to test.
* patterns `{String|Array}`: One or more glob patterns
* options: `{Object}`: options to pass to the `.matcher()` method.
**Example**
```js
mm.any('abc', ['!*z']);
//=> true
mm.any('abc', ['a*', 'z*']);
//=> true
mm.any('abc', 'a*');
//=> true
mm.any('abc', ['z*']);
//=> false
```
### .expand
Returns an object with a regex-compatible string and tokens.
```js
mm.expand('*.js');
// when `track` is enabled (for debugging), the `history` array is used
// to record each mutation to the glob pattern as it's converted to regex
{ options: { track: false, dot: undefined, makeRe: true, negated: false },
pattern: '(.*\\/|^)bar\\/(?:(?!(?:^|\\/)\\.).)*?',
history: [],
tokens:
{ path:
{ whole: '**/bar/**',
dirname: '**/bar/',
filename: '**',
basename: '**',
extname: '',
ext: '' },
is:
{ glob: true,
negated: false,
globstar: true,
dotfile: false,
dotdir: false },
match: {},
original: '**/bar/**',
pattern: '**/bar/**',
base: '' } }
```
### .makeRe
Create a regular expression for matching file paths based on the given pattern:
```js
mm.makeRe('*.js');
//=> /^(?:(?!\.)(?=.)[^/]*?\.js)$/
```
## Options
### options.unixify
Normalize slashes in file paths and glob patterns to forward slashes.
Type: `{Boolean}`
Default: `undefined` on non-windows, `true` on windows.
### options.dot
Match dotfiles. Same behavior as [minimatch](https://github.com/isaacs/minimatch).
Type: `{Boolean}`
Default: `false`
### options.unescape
Unescape slashes in glob patterns. Use cautiously, especially on windows.
Type: `{Boolean}`
Default: `undefined`
**Example**
```js
mm.isMatch('abc', '\\a\\b\\c', {unescape: true});
//=> true
```
### options.nodupes
Remove duplicate elements from the result array.
Type: `{Boolean}`
Default: `undefined`
**Example**
Example of using the `unescape` and `nodupes` options together:
```js
mm.match(['abc', '\\a\\b\\c'], '\\a\\b\\c', {unescape: true});
//=> ['abc', 'abc']
mm.match(['abc', '\\a\\b\\c'], '\\a\\b\\c', {unescape: true, nodupes: true});
//=> ['abc']
```
### options.matchBase
Allow glob patterns without slashes to match a file path based on its basename. . Same behavior as [minimatch](https://github.com/isaacs/minimatch).
Type: `{Boolean}`
Default: `false`
**Example**
```js
mm(['a/b.js', 'a/c.md'], '*.js');
//=> []
mm(['a/b.js', 'a/c.md'], '*.js', {matchBase: true});
//=> ['a/b.js']
```
### options.nobraces
Don't expand braces in glob patterns. Same behavior as [minimatch](https://github.com/isaacs/minimatch) `nobrace`.
Type: `{Boolean}`
Default: `undefined`
See [braces](https://github.com/jonschlinkert/braces) for more information about extended brace expansion.
### options.nobrackets
Don't expand POSIX bracket expressions.
Type: `{Boolean}`
Default: `undefined`
See [expand-brackets](https://github.com/jonschlinkert/expand-brackets) for more information about extended bracket expressions.
### options.noextglob
Don't expand extended globs.
Type: `{Boolean}`
Default: `undefined`
See [extglob](https://github.com/jonschlinkert/extglob) for more information about extended globs.
### options.nocase
Use a case-insensitive regex for matching files. Same behavior as [minimatch](https://github.com/isaacs/minimatch).
Type: `{Boolean}`
Default: `false`
### options.nonull
If `true`, when no matches are found the actual (array-ified) glob pattern is returned instead of an empty array. Same behavior as [minimatch](https://github.com/isaacs/minimatch).
Type: `{Boolean}`
Default: `false`
### options.cache
Cache the platform (e.g. `win32`) to prevent this from being looked up for every filepath.
Type: `{Boolean}`
Default: `true`
## Other features
Micromatch also supports the following.
### Extended globbing
#### extglobs
Extended globbing, as described by the bash man page:
| **pattern** | **regex equivalent** | **description** |
| --- | --- | --- |
| `?(pattern-list)` | `(...|...)?` | Matches zero or one occurrence of the given patterns |
| `*(pattern-list)` | `(...|...)*` | Matches zero or more occurrences of the given patterns |
| `+(pattern-list)` | `(...|...)+` | Matches one or more occurrences of the given patterns |
| `@(pattern-list)` | `(...|...)` * | Matches one of the given patterns |
| `!(pattern-list)` | N/A | Matches anything except one of the given patterns |
* `@` isn't a RegEx character.
Powered by [extglob](https://github.com/jonschlinkert/extglob). Visit that library for the full range of options or to report extglob related issues.
See [extglob](https://github.com/jonschlinkert/extglob) for more information about extended globs.
#### brace expansion
In simple cases, brace expansion appears to work the same way as the logical `OR` operator. For example, `(a|b)` will achieve the same result as `{a,b}`.
Here are some powerful features unique to brace expansion (versus character classes):
* range expansion: `a{1..3}b/*.js` expands to: `['a1b/*.js', 'a2b/*.js', 'a3b/*.js']`
* nesting: `a{c,{d,e}}b/*.js` expands to: `['acb/*.js', 'adb/*.js', 'aeb/*.js']`
Visit [braces](https://github.com/jonschlinkert/braces) to ask questions and create an issue related to brace-expansion, or to see the full range of features and options related to brace expansion.
#### regex character classes
With the exception of brace expansion (`{a,b}`, `{1..5}`, etc), most of the special characters convert directly to regex, so you can expect them to follow the same rules and produce the same results as regex.
For example, given the list: `['a.js', 'b.js', 'c.js', 'd.js', 'E.js']`:
* `[ac].js`: matches both `a` and `c`, returning `['a.js', 'c.js']`
* `[b-d].js`: matches from `b` to `d`, returning `['b.js', 'c.js', 'd.js']`
* `[b-d].js`: matches from `b` to `d`, returning `['b.js', 'c.js', 'd.js']`
* `a/[A-Z].js`: matches and uppercase letter, returning `['a/E.md']`
Learn about [regex character classes](http://www.regular-expressions.info/charclass.html).
#### regex groups
Given `['a.js', 'b.js', 'c.js', 'd.js', 'E.js']`:
* `(a|c).js`: would match either `a` or `c`, returning `['a.js', 'c.js']`
* `(b|d).js`: would match either `b` or `d`, returning `['b.js', 'd.js']`
* `(b|[A-Z]).js`: would match either `b` or an uppercase letter, returning `['b.js', 'E.js']`
As with regex, parenthese can be nested, so patterns like `((a|b)|c)/b` will work. But it might be easier to achieve your goal using brace expansion.
#### POSIX bracket expressions
**Example**
```js
mm.isMatch('a1', '[[:alpha:][:digit:]]');
//=> true
```
See [expand-brackets](https://github.com/jonschlinkert/expand-brackets) for more information about extended bracket expressions.
## Notes
Whenever possible parsing behavior for patterns is based on globbing specifications in Bash 4.3. Patterns that aren't described by Bash follow wildmatch spec (used by git).
## Benchmarks
Run the [benchmarks](./benchmark):
```bash
node benchmark
```
As of October 03, 2015:
```bash
#1: basename-braces
micromatch x 26,420 ops/sec ±0.89% (91 runs sampled)
minimatch x 3,507 ops/sec ±0.64% (97 runs sampled)
#2: basename
micromatch x 25,315 ops/sec ±0.82% (93 runs sampled)
minimatch x 4,398 ops/sec ±0.86% (94 runs sampled)
#3: braces-no-glob
micromatch x 341,254 ops/sec ±0.78% (93 runs sampled)
minimatch x 30,197 ops/sec ±1.12% (91 runs sampled)
#4: braces
micromatch x 54,649 ops/sec ±0.74% (94 runs sampled)
minimatch x 3,095 ops/sec ±0.82% (95 runs sampled)
#5: immediate
micromatch x 16,719 ops/sec ±0.79% (95 runs sampled)
minimatch x 4,348 ops/sec ±0.86% (96 runs sampled)
#6: large
micromatch x 721 ops/sec ±0.77% (94 runs sampled)
minimatch x 17.73 ops/sec ±1.08% (50 runs sampled)
#7: long
micromatch x 5,051 ops/sec ±0.87% (97 runs sampled)
minimatch x 628 ops/sec ±0.83% (94 runs sampled)
#8: mid
micromatch x 51,280 ops/sec ±0.80% (95 runs sampled)
minimatch x 1,923 ops/sec ±0.84% (95 runs sampled)
#9: multi-patterns
micromatch x 22,440 ops/sec ±0.97% (94 runs sampled)
minimatch x 2,481 ops/sec ±1.10% (94 runs sampled)
#10: no-glob
micromatch x 722,823 ops/sec ±1.30% (87 runs sampled)
minimatch x 52,967 ops/sec ±1.09% (94 runs sampled)
#11: range
micromatch x 243,471 ops/sec ±0.79% (94 runs sampled)
minimatch x 11,736 ops/sec ±0.82% (96 runs sampled)
#12: shallow
micromatch x 190,874 ops/sec ±0.98% (95 runs sampled)
minimatch x 21,699 ops/sec ±0.81% (97 runs sampled)
#13: short
micromatch x 496,393 ops/sec ±3.86% (90 runs sampled)
minimatch x 53,765 ops/sec ±0.75% (95 runs sampled)
```
## Run tests
Install dev dependencies:
```sh
$ npm i -d && npm test
```
## Contributing
Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/micromatch/issues/new).
Please be sure to run the benchmarks before/after any code changes to judge the impact before you do a PR. thanks!
## Related
* [braces](https://www.npmjs.com/package/braces): Fastest brace expansion for node.js, with the most complete… [more](https://www.npmjs.com/package/braces) | [homepage](https://github.com/jonschlinkert/braces)
* [expand-brackets](https://www.npmjs.com/package/expand-brackets): Expand POSIX bracket expressions (character classes) in glob patterns. | [homepage](https://github.com/jonschlinkert/expand-brackets)
* [expand-range](https://www.npmjs.com/package/expand-range): Fast, bash-like range expansion. Expand a range of numbers… [more](https://www.npmjs.com/package/expand-range) | [homepage](https://github.com/jonschlinkert/expand-range)
* [extglob](https://www.npmjs.com/package/extglob): Convert extended globs to regex-compatible strings. Add (almost) the… [more](https://www.npmjs.com/package/extglob) | [homepage](https://github.com/jonschlinkert/extglob)
* [fill-range](https://www.npmjs.com/package/fill-range): Fill in a range of numbers or letters, optionally… [more](https://www.npmjs.com/package/fill-range) | [homepage](https://github.com/jonschlinkert/fill-range)
* [gulp-micromatch](https://www.npmjs.com/package/gulp-micromatch): Filter vinyl files with glob patterns, string, regexp, array,… [more](https://www.npmjs.com/package/gulp-micromatch) | [homepage](https://github.com/tunnckocore/gulp-micromatch)
* [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a… [more](https://www.npmjs.com/package/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob)
* [parse-glob](https://www.npmjs.com/package/parse-glob): Parse a glob pattern into an object of tokens. | [homepage](https://github.com/jonschlinkert/parse-glob)
## Author
**Jon Schlinkert**
+ [github/jonschlinkert](https://github.com/jonschlinkert)
+ [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
## License
Copyright © 2014-2015 [Jon Schlinkert](https://github.com/jonschlinkert)
Released under the MIT license.
***
_This file was generated by [verb-cli](https://github.com/assemble/verb-cli) on October 03, 2015._