Convert each object key to uppercase.
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> Convert each object key to uppercase.
``bash`
npm install @stdlib/utils-uppercase-keys
`javascript`
var uppercaseKeys = require( '@stdlib/utils-uppercase-keys' );
#### uppercaseKeys( obj )
Converts each object key to uppercase, mapping the transformed keys to a new object having the same values.
`javascript
var obj1 = {
'a': 1,
'b': 2
};
var obj2 = uppercaseKeys( obj1 );
// returns { 'A': 1, 'B': 2 }
`
- The function only transforms own properties. Hence, the function does not transform inherited properties.
- The function shallow copies key values.
`javascript
var uppercaseKeys = require( '@stdlib/utils-uppercase-keys' );
var obj1 = {
'a': 'beep',
'b': 'boop',
'c': 'foo',
'd': 'bar'
};
var obj2 = uppercaseKeys( obj1 );
console.dir( obj2 );
// => { 'A': 'beep', 'B': 'boop', 'C': 'foo', 'D': 'bar' }
`
*
- [@stdlib/utils-capitalize-keys][@stdlib/utils/capitalize-keys]: convert the first letter of each object key to uppercase.
- [@stdlib/utils-lowercase-keys][@stdlib/utils/lowercase-keys]: convert each object key to lowercase.
*
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For more information on the project, filing bug reports and feature requests, and guidance on how to develop [stdlib][stdlib], see the main project [repository][stdlib].
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---
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[deno-url]: https://github.com/stdlib-js/utils-uppercase-keys/tree/deno
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[umd-url]: https://github.com/stdlib-js/utils-uppercase-keys/tree/umd
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[esm-url]: https://github.com/stdlib-js/utils-uppercase-keys/tree/esm
[esm-readme]: https://github.com/stdlib-js/utils-uppercase-keys/blob/esm/README.md
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[@stdlib/utils/capitalize-keys]: https://www.npmjs.com/package/@stdlib/utils-capitalize-keys
[@stdlib/utils/lowercase-keys]: https://www.npmjs.com/package/@stdlib/utils-lowercase-keys