# validate.io-function

> Validates if a value is a function.

Latest version **1.0.2** (published 2015-02-20) · 0 weekly downloads

## Install

```sh
npm install validate.io-function
pnpm add validate.io-function
yarn add validate.io-function
bun add validate.io-function
```

## Health

**Score 15/100 (F)** — status: abandoned.

Positive: no vulnerabilities.

Warnings: low downloads; no types; no esm support.

Negative: abandoned; low maintenance score.

## Facts

| | |
|---|---|
| Version | 1.0.2 |
| Published | 2015-02-20 |
| First published | 2014-08-31 |
| Weekly downloads | 0 |
| TypeScript types | none |
| Module format | CommonJS |
| Dependencies | 0 |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 3 |
| Author | Athan Reines |
| Maintainers | kgryte |
| Keywords | validate.io, validate, validation, validator, valid, function, is, isfunction |

## Links

- npm: https://www.npmjs.com/package/validate.io-function
- Repository: https://github.com/validate-io/function
- Issues: https://github.com/validate-io/function/issues
- npm.io page: https://npm.io/package/validate.io-function

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## Recent versions

- 1.0.2 (latest) — 2015-02-20
- 1.0.1 — 2015-02-19
- 1.0.0 — 2014-09-01
- 0.0.2 — 2014-08-31
- 0.0.1 — 2014-08-31
- 0.0.0 — 2014-08-31

## README

Function
===
[![NPM version][npm-image]][npm-url] [![Build Status][travis-image]][travis-url] [![Coverage Status][coveralls-image]][coveralls-url] [![Dependencies][dependencies-image]][dependencies-url]

> Validates if a value is a function.


## Installation

``` bash
$ npm install validate.io-function
```

For use in the browser, use [browserify](https://github.com/substack/node-browserify).


## Usage

``` javascript
var isFunction = require( 'validate.io-function' );
```

#### isFunction( value )

Validates if a `value` is a `function`.

``` javascript
var value = function beep(){};

var bool = isFunction( value );
// returns true
```


## Examples

``` javascript
console.log( isFunction( function foo(){} ) );
// returns true

console.log( isFunction( {} ) );
// returns false
```

To run the example code from the top-level application directory,

``` bash
$ node ./examples/index.js
```


## Tests

### Unit

Unit tests use the [Mocha](http://mochajs.org) test framework with [Chai](http://chaijs.com) assertions. To run the tests, execute the following command in the top-level application directory:

``` bash
$ make test
```

All new feature development should have corresponding unit tests to validate correct functionality.


### Test Coverage

This repository uses [Istanbul](https://github.com/gotwarlost/istanbul) as its code coverage tool. To generate a test coverage report, execute the following command in the top-level application directory:

``` bash
$ make test-cov
```

Istanbul creates a `./reports/coverage` directory. To access an HTML version of the report,

``` bash
$ make view-cov
```


---
## License

[MIT license](http://opensource.org/licenses/MIT). 


## Copyright

Copyright © 2014. Athan Reines.


[npm-image]: http://img.shields.io/npm/v/validate.io-function.svg
[npm-url]: https://npmjs.org/package/validate.io-function

[travis-image]: http://img.shields.io/travis/validate-io/function/master.svg
[travis-url]: https://travis-ci.org/validate-io/function

[coveralls-image]: https://img.shields.io/coveralls/validate-io/function/master.svg
[coveralls-url]: https://coveralls.io/r/validate-io/function?branch=master

[dependencies-image]: http://img.shields.io/david/validate-io/function.svg
[dependencies-url]: https://david-dm.org/validate-io/function

[dev-dependencies-image]: http://img.shields.io/david/dev/validate-io/function.svg
[dev-dependencies-url]: https://david-dm.org/dev/validate-io/function

[github-issues-image]: http://img.shields.io/github/issues/validate-io/function.svg
[github-issues-url]: https://github.com/validate-io/function/issues

---
_Source: https://npm.io/package/validate.io-function · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._