1 | # is-callable <sup>[![Version Badge][2]][1]</sup>
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2 |
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3 | [![Build Status][3]][4]
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4 | [![dependency status][5]][6]
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5 | [![dev dependency status][7]][8]
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6 | [![License][license-image]][license-url]
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7 | [![Downloads][downloads-image]][downloads-url]
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8 |
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9 | [![npm badge][11]][1]
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10 |
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11 | [![browser support][9]][10]
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12 |
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13 | Is this JS value callable? Works with Functions and GeneratorFunctions, despite ES6 @@toStringTag.
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14 |
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15 | ## Example
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16 |
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17 | ```js
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18 | var isCallable = require('is-callable');
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19 | var assert = require('assert');
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20 |
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21 | assert.notOk(isCallable(undefined));
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22 | assert.notOk(isCallable(null));
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23 | assert.notOk(isCallable(false));
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24 | assert.notOk(isCallable(true));
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25 | assert.notOk(isCallable([]));
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26 | assert.notOk(isCallable({}));
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27 | assert.notOk(isCallable(/a/g));
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28 | assert.notOk(isCallable(new RegExp('a', 'g')));
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29 | assert.notOk(isCallable(new Date()));
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30 | assert.notOk(isCallable(42));
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31 | assert.notOk(isCallable(NaN));
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32 | assert.notOk(isCallable(Infinity));
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33 | assert.notOk(isCallable(new Number(42)));
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34 | assert.notOk(isCallable('foo'));
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35 | assert.notOk(isCallable(Object('foo')));
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36 |
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37 | assert.ok(isCallable(function () {}));
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38 | assert.ok(isCallable(function* () {}));
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39 | assert.ok(isCallable(x => x * x));
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40 | ```
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41 |
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42 | ## Tests
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43 | Simply clone the repo, `npm install`, and run `npm test`
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44 |
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45 | [1]: https://npmjs.org/package/is-callable
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46 | [2]: http://versionbadg.es/ljharb/is-callable.svg
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47 | [3]: https://travis-ci.org/ljharb/is-callable.svg
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48 | [4]: https://travis-ci.org/ljharb/is-callable
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49 | [5]: https://david-dm.org/ljharb/is-callable.svg
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50 | [6]: https://david-dm.org/ljharb/is-callable
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51 | [7]: https://david-dm.org/ljharb/is-callable/dev-status.svg
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52 | [8]: https://david-dm.org/ljharb/is-callable#info=devDependencies
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53 | [9]: https://ci.testling.com/ljharb/is-callable.png
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54 | [10]: https://ci.testling.com/ljharb/is-callable
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55 | [11]: https://nodei.co/npm/is-callable.png?downloads=true&stars=true
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56 | [license-image]: http://img.shields.io/npm/l/is-callable.svg
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57 | [license-url]: LICENSE
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58 | [downloads-image]: http://img.shields.io/npm/dm/is-callable.svg
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59 | [downloads-url]: http://npm-stat.com/charts.html?package=is-callable
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