Simple type checks

This is a minimal helper library for type checking in JavaScript. In most
cases you will NOT need it. The only case where this comes handy when
you have to do a lot of type checking in your code. In these cases writing
multiple typeof myvalue === 'whatever' can become quite noisy.

API

| function | Check if |
|---|---|
| isUndef| ...value is undefined |
| isNull| ...value is null |
| isNullOrUndef| ...value is undefined or null |
| isString| ...value is a string |
| isNumber| ...value is a number, excluding NaN |
| isBool| ...value is a boolean |
| isDate| ...value is a Date-object |
| isFormatDate| ...value has the format YYYY-MM-DD |
| isFormatDateTime| ...value has the format YYYY-MM-DD hh:mm:ss |
| isFormatDateUTC| ...value has the format YYYY-MM-DDThh:mm:ssZ |
| isObject| ...value is an Object (_Note:_ Arrays are objects too) |
| isEmpty| ...value is "", {}, [], undefined or null |

LICENSE

See LICENSE.md