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# Merge-Class-Names
A function that merges given class names, no matter their format. Filters out invalid class names as well.
## tl;dr
* Install by executing `npm install merge-class-names` or `yarn add merge-class-names`.
* Import by adding `import mergeClassNames from 'merge-class-names'`.
* Use it in `className` like so: ``
## Accepted formats
* Strings with one or multiple class names: `a`, `a b`
* Array of strings with one or multiple class names: `['a', 'b']`, `['a b', 'c d']`.
## Examples
```js
> mergeClassNames('a', 'b', 'c');
< 'a b c'
> mergeClassNames('a b', 'c d', 'e f');
< 'a b c d e f'
> mergeClassNames(['a', 'b'], ['c', 'd']);
< 'a b c d'
> mergeClassNames(['a b', 'c d'], ['e f', 'g h']);
< 'a b c d e f g h'
> mergeClassNames('a', 'b', falsyCondition && 'c');
< 'a b'
> mergeClassNames('a', 'b', 'c', null, ['d', null], () => {}, 'e', undefined);
< 'a b c d e'
```
## License
The MIT License.
## Author
