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