var-clean 

Simple JavaScript library that clean variable

``bash
npm install var-clean
`

Usage:
----

`JavaScript
var clean = require('var-clean').clean;
clean.cleanInteger(2); //return 2
clean.cleanInteger('2'); //return 2
clean.cleanInteger('asdf'); //return undefined

var cleanOrThrow = require('var-clean').cleanOrThrow;
cleanOrThrow.cleanInteger(2); //return 2
cleanOrThrow.cleanInteger('2'); //return 2
cleanOrThrow.cleanInteger('asdf'); //throw Error 'Not a Number'
`

Based on the spec:
-----

$3

value | cleanBoolean | cleanTruthy | cleanInteger | cleanPositiveInteger | cleanString | cleanOnlyString
---|---|---|---|---|---|---
true | true | true | undefined | undefined | 'true' | undefined
'true' | true | true | undefined | undefined | 'true' | 'true'
false | false | false | undefined | undefined | 'false' | undefined
'false' | false | false | undefined | undefined | 'false' | 'false'
{} | undefined | true | undefined | undefined | undefined | undefined
{ipsum: 'lorem'} | undefined | true | undefined | undefined | undefined | undefined
'lorem' | undefined | true | undefined | undefined | 'lorem' | 'lorem'
'' | undefined | false | undefined | undefined | '' | ''
1 | undefined | true | 1 | 1 | '1' | undefined
0 | undefined | false | 0 | 0 | '0' | undefined
153 | undefined | true | 153 | 153 | '153' | undefined
'153' | undefined | true | 153 | 153 | '153' | '153'
-153 | undefined | true | -153 | undefined | '-153' | undefined
'-153' | undefined | true | -153 | undefined | -'153' | -'153'
undefined | undefined | false | undefined | undefined | 'undefined' | undefined
null | undefined | false | undefined | undefined | 'null' | undefined

$3

value | cleanBoolean | cleanTruthy | cleanInteger | cleanPositiveInteger | cleanString | cleanOnlyString
---|---|---|---|---|---|---
true | true | true | Not a Number | Not a Number | 'true' | Not a String
'true' | true | true | Not a Number | Not a Number | 'true' | 'true'
false | false | false | undefined | Not a Number | 'false' | Not a String
'false' | false | false | Not a Number | Not a Number | 'false' | 'false'
{} | Not a Boolean | true | Not a Number | Not a Number | Not a String | Not a String
{ipsum: 'lorem'} | Not a Boolean | true | Not a Number | Not a Number | Not a String | Not a String
'lorem' | Not a Boolean | true | Not a Number | Not a Number | 'lorem' | 'lorem'
'' | Not a Boolean | false | Not a Number | Not a Number | '' | ''
1 | Not a Boolean | true | 1 | 1 | '1' | Not a String
0 | Not a Boolean | false | 0 | 0 | '0' | Not a String
153 | Not a Boolean | true | 153 | 153 | '153' | Not a String
'153' | Not a Boolean | true | 153 | 153 | '153' | '153'
-153 | Not a Boolean | true | -153 | Negative number | '-153' | Not a String
'-153' | Not a Boolean | true | -153 | Negative number | -'153' | -'153'
undefined | Not a Boolean | false | Not a Number | Not a Number | 'undefined' | Not a String
null | Not a Boolean | false | Not a Number | Not a Number | 'null' | Not a String`