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"use strict";
/**
* Copyright (c) 2013-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
*/
/**
* Allows extraction of a minified key. Let's the build system minify keys
* without losing the ability to dynamically use key strings as values
* themselves. Pass in an object with a single key/val pair and it will return
* you the string key of that single record. Suppose you want to grab the
* value for a key 'className' inside of an object. Key/val minification may
* have aliased that key to be 'xa12'. keyOf({className: null}) will return
* 'xa12' in that case. Resolve keys you want to use once at startup time, then
* reuse those resolutions.
*/
var keyOf = function keyOf(oneKeyObj) {
var key;
for (key in oneKeyObj) {
if (!oneKeyObj.hasOwnProperty(key)) {
continue;
}
return key;
}
return null;
};
module.exports = keyOf;
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