has-values    

> Returns true if any values exist, false if empty. Works for booleans, functions, numbers, strings, nulls, objects and arrays.

Please consider following this project's author, Jon Schlinkert, and consider starring the project to show your :heart: and support.

Install

Install with npm:

``sh
$ npm install --save has-values
`

Usage

`js
const has = require('has-values');
`

Create an isEmpty function by returning the inverse of the result from has-values:

`js
const isEmpty = val => !has(val);
`

Supported types

$3

`js
console.log(has(['a'])); //=> true
console.log(has([0])); //=> true
console.log(has([[[]]])); //=> false
console.log(has([[], []])); //=> false
console.log(has([])); //=> false
`

$3

`js
console.log(has(true)); //=> true
console.log(has(false)); //=> true
`

$3

`js
console.log(has(new Buffer())); //=> false
console.log(has(new Buffer('foo'))); //=> true
`

$3

Dates are always true.

`js
console.log(has(new Date())); //=> true
`

$3

Returns false if err.message is an empty string.

`js
console.log(has(new Error())); //=> false
console.log(has(new Error('foo'))); //=> true
`

$3

Functions are always true.

`js
console.log(has(function(foo) {})); //=> true
console.log(has(function() {})); //=> true
`

$3

`js
console.log(has(new Map())); //=> false
console.log(has(new Map([['foo', 'bar']]))); //=> true
`

$3

null is always true, as it's assumed that this is a user-defined value, versus undefined which is not.

`js
console.log(has(null)); //=> true
`

$3

`js
console.log(has({})); //=> false
console.log(has({ a: 'a' }})); //=> true
console.log(has({ foo: undefined })); //=> false
console.log(has({ foo: null })); //=> true
`

$3

`js
console.log(has(1)); //=> true
console.log(has(0)); //=> true
`

$3

`js
console.log(has(new RegExp())); //=> false
console.log(has(new RegExp('foo'))); //=> true
`

$3

`js
console.log(has(new Set())); //=> false
console.log(has(new Set(['foo', 'bar']))); //=> true
`

$3

`js
console.log(has('a')); //=> true
console.log(has('')); //=> false
`

Undefined

`js
console.log(has()); //=> false
console.log(has(void 0)); //=> false
console.log(has(undefined)); //=> false
`

Release history

$3

* no longer supports numbers as a string
* optimizations
* adds support for regex and buffer

$3

* adds support for Map and Set
* zero always returns true
* array now recurses, so that an array of empty arrays will return false
* null now returns true

About

$3

You might also be interested in these projects:

* has-value: Returns true if a value exists, false if empty. Works with deeply nested values using… more | homepage
* is-number: Returns true if the value is a number. comprehensive tests. | homepage
* is-plain-object: Returns true if an object was created by the Object constructor. | Object` constructor."" class="text-primary hover:underline" target="_blank" rel="noopener noreferrer">homepage
* isobject: Returns true if the value is an object and not an array or null. | homepage
* kind-of: Get the native type of a value. | homepage

$3

Jon Schlinkert

* linkedin/in/jonschlinkert
* github/jonschlinkert
* twitter/jonschlinkert

$3

Copyright © 2018, Jon Schlinkert.
Released under the MIT License.

*

_This file was generated by verb-generate-readme, v0.6.0, on January 30, 2018._