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1# is-glob [![NPM version](https://img.shields.io/npm/v/is-glob.svg?style=flat)](https://www.npmjs.com/package/is-glob) [![NPM monthly downloads](https://img.shields.io/npm/dm/is-glob.svg?style=flat)](https://npmjs.org/package/is-glob) [![NPM total downloads](https://img.shields.io/npm/dt/is-glob.svg?style=flat)](https://npmjs.org/package/is-glob) [![Build Status](https://img.shields.io/github/workflow/status/micromatch/is-glob/dev)](https://github.com/micromatch/is-glob/actions)
2
3> Returns `true` if the given string looks like a glob pattern or an extglob pattern. This makes it easy to create code that only uses external modules like node-glob when necessary, resulting in much faster code execution and initialization time, and a better user experience.
4
5Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
6
7## Install
8
9Install with [npm](https://www.npmjs.com/):
10
11```sh
12$ npm install --save is-glob
13```
14
15You might also be interested in [is-valid-glob](https://github.com/jonschlinkert/is-valid-glob) and [has-glob](https://github.com/jonschlinkert/has-glob).
16
17## Usage
18
19```js
20var isGlob = require('is-glob');
21```
22
23### Default behavior
24
25**True**
26
27Patterns that have glob characters or regex patterns will return `true`:
28
29```js
30isGlob('!foo.js');
31isGlob('*.js');
32isGlob('**/abc.js');
33isGlob('abc/*.js');
34isGlob('abc/(aaa|bbb).js');
35isGlob('abc/[a-z].js');
36isGlob('abc/{a,b}.js');
37//=> true
38```
39
40Extglobs
41
42```js
43isGlob('abc/@(a).js');
44isGlob('abc/!(a).js');
45isGlob('abc/+(a).js');
46isGlob('abc/*(a).js');
47isGlob('abc/?(a).js');
48//=> true
49```
50
51**False**
52
53Escaped globs or extglobs return `false`:
54
55```js
56isGlob('abc/\\@(a).js');
57isGlob('abc/\\!(a).js');
58isGlob('abc/\\+(a).js');
59isGlob('abc/\\*(a).js');
60isGlob('abc/\\?(a).js');
61isGlob('\\!foo.js');
62isGlob('\\*.js');
63isGlob('\\*\\*/abc.js');
64isGlob('abc/\\*.js');
65isGlob('abc/\\(aaa|bbb).js');
66isGlob('abc/\\[a-z].js');
67isGlob('abc/\\{a,b}.js');
68//=> false
69```
70
71Patterns that do not have glob patterns return `false`:
72
73```js
74isGlob('abc.js');
75isGlob('abc/def/ghi.js');
76isGlob('foo.js');
77isGlob('abc/@.js');
78isGlob('abc/+.js');
79isGlob('abc/?.js');
80isGlob();
81isGlob(null);
82//=> false
83```
84
85Arrays are also `false` (If you want to check if an array has a glob pattern, use [has-glob](https://github.com/jonschlinkert/has-glob)):
86
87```js
88isGlob(['**/*.js']);
89isGlob(['foo.js']);
90//=> false
91```
92
93### Option strict
94
95When `options.strict === false` the behavior is less strict in determining if a pattern is a glob. Meaning that
96some patterns that would return `false` may return `true`. This is done so that matching libraries like [micromatch](https://github.com/micromatch/micromatch) have a chance at determining if the pattern is a glob or not.
97
98**True**
99
100Patterns that have glob characters or regex patterns will return `true`:
101
102```js
103isGlob('!foo.js', {strict: false});
104isGlob('*.js', {strict: false});
105isGlob('**/abc.js', {strict: false});
106isGlob('abc/*.js', {strict: false});
107isGlob('abc/(aaa|bbb).js', {strict: false});
108isGlob('abc/[a-z].js', {strict: false});
109isGlob('abc/{a,b}.js', {strict: false});
110//=> true
111```
112
113Extglobs
114
115```js
116isGlob('abc/@(a).js', {strict: false});
117isGlob('abc/!(a).js', {strict: false});
118isGlob('abc/+(a).js', {strict: false});
119isGlob('abc/*(a).js', {strict: false});
120isGlob('abc/?(a).js', {strict: false});
121//=> true
122```
123
124**False**
125
126Escaped globs or extglobs return `false`:
127
128```js
129isGlob('\\!foo.js', {strict: false});
130isGlob('\\*.js', {strict: false});
131isGlob('\\*\\*/abc.js', {strict: false});
132isGlob('abc/\\*.js', {strict: false});
133isGlob('abc/\\(aaa|bbb).js', {strict: false});
134isGlob('abc/\\[a-z].js', {strict: false});
135isGlob('abc/\\{a,b}.js', {strict: false});
136//=> false
137```
138
139## About
140
141<details>
142<summary><strong>Contributing</strong></summary>
143
144Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
145
146</details>
147
148<details>
149<summary><strong>Running Tests</strong></summary>
150
151Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
152
153```sh
154$ npm install && npm test
155```
156
157</details>
158
159<details>
160<summary><strong>Building docs</strong></summary>
161
162_(This project's readme.md is generated by [verb](https://github.com/verbose/verb-generate-readme), please don't edit the readme directly. Any changes to the readme must be made in the [.verb.md](.verb.md) readme template.)_
163
164To generate the readme, run the following command:
165
166```sh
167$ npm install -g verbose/verb#dev verb-generate-readme && verb
168```
169
170</details>
171
172### Related projects
173
174You might also be interested in these projects:
175
176* [assemble](https://www.npmjs.com/package/assemble): Get the rocks out of your socks! Assemble makes you fast at creating web projects… [more](https://github.com/assemble/assemble) | [homepage](https://github.com/assemble/assemble "Get the rocks out of your socks! Assemble makes you fast at creating web projects. Assemble is used by thousands of projects for rapid prototyping, creating themes, scaffolds, boilerplates, e-books, UI components, API documentation, blogs, building websit")
177* [base](https://www.npmjs.com/package/base): Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks | [homepage](https://github.com/node-base/base "Framework for rapidly creating high quality, server-side node.js applications, using plugins like building blocks")
178* [update](https://www.npmjs.com/package/update): Be scalable! Update is a new, open source developer framework and CLI for automating updates… [more](https://github.com/update/update) | [homepage](https://github.com/update/update "Be scalable! Update is a new, open source developer framework and CLI for automating updates of any kind in code projects.")
179* [verb](https://www.npmjs.com/package/verb): Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used… [more](https://github.com/verbose/verb) | [homepage](https://github.com/verbose/verb "Documentation generator for GitHub projects. Verb is extremely powerful, easy to use, and is used on hundreds of projects of all sizes to generate everything from API docs to readmes.")
180
181### Contributors
182
183| **Commits** | **Contributor** |
184| --- | --- |
185| 47 | [jonschlinkert](https://github.com/jonschlinkert) |
186| 5 | [doowb](https://github.com/doowb) |
187| 1 | [phated](https://github.com/phated) |
188| 1 | [danhper](https://github.com/danhper) |
189| 1 | [paulmillr](https://github.com/paulmillr) |
190
191### Author
192
193**Jon Schlinkert**
194
195* [GitHub Profile](https://github.com/jonschlinkert)
196* [Twitter Profile](https://twitter.com/jonschlinkert)
197* [LinkedIn Profile](https://linkedin.com/in/jonschlinkert)
198
199### License
200
201Copyright © 2019, [Jon Schlinkert](https://github.com/jonschlinkert).
202Released under the [MIT License](LICENSE).
203
204***
205
206_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.8.0, on March 27, 2019._
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