validate.io-undefined

undefined
===
[![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 undefined.

Installation

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

For use in the browser, use browserify.

Usage

` javascript
var isUndefined = require( 'validate.io-undefined' );
`

#### isUndefined( value )

Validates if a value is undefined.

` javascript
var value;

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

Examples

` javascript
var isUndefined = require( 'validate.io-undefined' );

console.log( isUndefined( undefined ) );
// returns true

console.log( isUndefined( null ) );
// returns false
`


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

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

Tests

$3

Unit tests use the Mocha test framework with Chai 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.

$3

This repository uses 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.

Copyright

Copyright © 2014. Athan Reines.

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

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

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

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

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

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