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133 lines
4.4 KiB
Markdown
133 lines
4.4 KiB
Markdown
# regex-not [](https://www.npmjs.com/package/regex-not) [](https://npmjs.org/package/regex-not) [](https://npmjs.org/package/regex-not) [](https://travis-ci.org/jonschlinkert/regex-not)
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> Create a javascript regular expression for matching everything except for the given string.
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Please consider following this project's author, [Jon Schlinkert](https://github.com/jonschlinkert), and consider starring the project to show your :heart: and support.
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## Install
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Install with [npm](https://www.npmjs.com/):
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```sh
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$ npm install --save regex-not
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```
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## Usage
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```js
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var not = require('regex-not');
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```
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The main export is a function that takes a string an options object.
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```js
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not(string[, options]);
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```
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**Example**
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```js
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var not = require('regex-not');
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console.log(not('foo'));
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//=> /^(?:(?!^(?:foo)$).)+$/
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```
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**Strict matching**
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By default, the returned regex is for strictly (not) matching the exact given pattern (in other words, "match this string if it does NOT _exactly equal_ `foo`"):
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```js
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var re = not('foo');
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console.log(re.test('foo')); //=> false
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console.log(re.test('bar')); //=> true
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console.log(re.test('foobar')); //=> true
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console.log(re.test('barfoo')); //=> true
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```
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### .create
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Returns a string to allow you to create your own regex:
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```js
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console.log(not.create('foo'));
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//=> '(?:(?!^(?:foo)$).)+'
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```
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### Options
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**options.contains**
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You can relax strict matching by setting `options.contains` to true (in other words, "match this string if it does NOT _contain_ `foo`"):
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```js
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var re = not('foo');
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console.log(re.test('foo', {contains: true})); //=> false
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console.log(re.test('bar', {contains: true})); //=> true
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console.log(re.test('foobar', {contains: true})); //=> false
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console.log(re.test('barfoo', {contains: true})); //=> false
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```
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## About
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<details>
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<summary><strong>Contributing</strong></summary>
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Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
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</details>
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<details>
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<summary><strong>Running Tests</strong></summary>
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Running and reviewing unit tests is a great way to get familiarized with a library and its API. You can install dependencies and run tests with the following command:
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```sh
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$ npm install && npm test
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```
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</details>
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<details>
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<summary><strong>Building docs</strong></summary>
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_(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.)_
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To generate the readme, run the following command:
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```sh
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$ npm install -g verbose/verb#dev verb-generate-readme && verb
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```
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</details>
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### Related projects
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You might also be interested in these projects:
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* [regex-cache](https://www.npmjs.com/package/regex-cache): Memoize the results of a call to the RegExp constructor, avoiding repetitious runtime compilation of… [more](https://github.com/jonschlinkert/regex-cache) | [homepage](https://github.com/jonschlinkert/regex-cache "Memoize the results of a call to the RegExp constructor, avoiding repetitious runtime compilation of the same string and options, resulting in surprising performance improvements.")
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* [to-regex](https://www.npmjs.com/package/to-regex): Generate a regex from a string or array of strings. | [homepage](https://github.com/jonschlinkert/to-regex "Generate a regex from a string or array of strings.")
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### Contributors
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| **Commits** | **Contributor** |
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| --- | --- |
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| 9 | [jonschlinkert](https://github.com/jonschlinkert) |
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| 1 | [doowb](https://github.com/doowb) |
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| 1 | [EdwardBetts](https://github.com/EdwardBetts) |
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### Author
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**Jon Schlinkert**
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* [linkedin/in/jonschlinkert](https://linkedin.com/in/jonschlinkert)
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* [github/jonschlinkert](https://github.com/jonschlinkert)
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* [twitter/jonschlinkert](https://twitter.com/jonschlinkert)
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### License
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Copyright © 2018, [Jon Schlinkert](https://github.com/jonschlinkert).
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Released under the [MIT License](LICENSE).
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***
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_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.6.0, on February 19, 2018._ |