# capitalizeKeys
> Convert the first letter of each object key to uppercase.
## Usage
```javascript
var capitalizeKeys = require( '@stdlib/utils/capitalize-keys' );
```
#### capitalizeKeys( obj )
Converts the first letter of each `object` key to uppercase, mapping the transformed keys to a new `object` having the same values.
```javascript
var obj1 = {
'beepBoop': 1,
'fooBar': 2
};
var obj2 = capitalizeKeys( obj1 );
// returns { 'BeepBoop': 1, 'FooBar': 2 }
```
## Notes
- The function only transforms **own** properties. Hence, the function does **not** transform inherited properties.
- The function **shallow** copies key values.
## Examples
```javascript
var capitalizeKeys = require( '@stdlib/utils/capitalize-keys' );
var obj1 = {
'aa': 'beep',
'bb': 'boop',
'cc': 'foo',
'dd': 'bar'
};
var obj2 = capitalizeKeys( obj1 );
console.dir( obj2 );
// => { 'Aa': 'beep', 'Bb': 'boop', 'Cc': 'foo', 'Dd': 'bar' }
```