algorithms/node_modules/regex-not

regex-not

Create a javascript regular expression for matching everything except for the given string.

Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your :heart: and support.

Install

Install with npm:

$ npm install --save regex-not

Usage

var not = require('regex-not');

The main export is a function that takes a string an options object.

not(string[, options]);

Example

var not = require('regex-not');
console.log(not('foo'));
//=> /^(?:(?!^(?:foo)$).)+$/

Strict matching

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"):

var re = not('foo');
console.log(re.test('foo'));     //=> false
console.log(re.test('bar'));     //=> true
console.log(re.test('foobar'));  //=> true
console.log(re.test('barfoo'));  //=> true

.create

Returns a string to allow you to create your own regex:

console.log(not.create('foo'));
//=> '(?:(?!^(?:foo)$).)+'

Options

options.contains

You can relax strict matching by setting options.contains to true (in other words, "match this string if it does NOT contain foo"):

var re = not('foo');
console.log(re.test('foo', {contains: true}));     //=> false
console.log(re.test('bar', {contains: true}));     //=> true
console.log(re.test('foobar', {contains: true}));  //=> false
console.log(re.test('barfoo', {contains: true}));  //=> false

About

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).

Running Tests

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: ```sh $ npm install && npm test ```

Building docs

_(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.)_ To generate the readme, run the following command: ```sh $ npm install -g verbose/verb#dev verb-generate-readme && verb ```

Related projects

You might also be interested in these projects:

• regex-cache: Memoize the results of a call to the RegExp constructor, avoiding repetitious runtime compilation of… more | homepage
• to-regex: Generate a regex from a string or array of strings. | homepage

Contributors

| Commits | Contributor | | --- | --- | | 9 | jonschlinkert | | 1 | doowb | | 1 | EdwardBetts |

Author

Jon Schlinkert

• linkedin/in/jonschlinkert
• github/jonschlinkert
• twitter/jonschlinkert

License

Copyright © 2018, Jon Schlinkert. Released under the MIT License.

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This file was generated by verb-generate-readme, v0.6.0, on February 19, 2018.