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54 lines
1.6 KiB
54 lines
1.6 KiB
#is-regex <sup>[![Version Badge][2]][1]</sup> |
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[![Build Status][3]][4] |
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[![dependency status][5]][6] |
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[![dev dependency status][7]][8] |
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[![License][license-image]][license-url] |
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[![Downloads][downloads-image]][downloads-url] |
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[![npm badge][11]][1] |
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[![browser support][9]][10] |
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Is this value a JS regex? |
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This module works cross-realm/iframe, and despite ES6 @@toStringTag. |
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## Example |
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```js |
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var isRegex = require('is-regex'); |
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var assert = require('assert'); |
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assert.notOk(isRegex(undefined)); |
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assert.notOk(isRegex(null)); |
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assert.notOk(isRegex(false)); |
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assert.notOk(isRegex(true)); |
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assert.notOk(isRegex(42)); |
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assert.notOk(isRegex('foo')); |
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assert.notOk(isRegex(function () {})); |
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assert.notOk(isRegex([])); |
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assert.notOk(isRegex({})); |
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assert.ok(isRegex(/a/g)); |
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assert.ok(isRegex(new RegExp('a', 'g'))); |
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``` |
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## Tests |
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Simply clone the repo, `npm install`, and run `npm test` |
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[1]: https://npmjs.org/package/is-regex |
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[2]: http://versionbadg.es/ljharb/is-regex.svg |
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[3]: https://travis-ci.org/ljharb/is-regex.svg |
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[4]: https://travis-ci.org/ljharb/is-regex |
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[5]: https://david-dm.org/ljharb/is-regex.svg |
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[6]: https://david-dm.org/ljharb/is-regex |
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[7]: https://david-dm.org/ljharb/is-regex/dev-status.svg |
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[8]: https://david-dm.org/ljharb/is-regex#info=devDependencies |
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[9]: https://ci.testling.com/ljharb/is-regex.png |
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[10]: https://ci.testling.com/ljharb/is-regex |
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[11]: https://nodei.co/npm/is-regex.png?downloads=true&stars=true |
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[license-image]: http://img.shields.io/npm/l/is-regex.svg |
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[license-url]: LICENSE |
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[downloads-image]: http://img.shields.io/npm/dm/is-regex.svg |
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[downloads-url]: http://npm-stat.com/charts.html?package=is-regex |
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