react-bootstrap
Version:
Bootstrap 3 components build with React
41 lines (38 loc) • 1.57 kB
JavaScript
define(function (require, exports, module) {/**
* Copyright 2013-2014, Facebook, Inc.
* All rights reserved.
*
* This file contains an unmodified version of:
* https://github.com/facebook/react/blob/v0.12.0/src/vendor/stubs/cx.js
*
* This source code is licensed under the BSD-style license found here:
* https://github.com/facebook/react/blob/v0.12.0/LICENSE
* An additional grant of patent rights can be found here:
* https://github.com/facebook/react/blob/v0.12.0/PATENTS
*/
/**
* This function is used to mark string literals representing CSS class names
* so that they can be transformed statically. This allows for modularization
* and minification of CSS class names.
*
* In static_upstream, this function is actually implemented, but it should
* eventually be replaced with something more descriptive, and the transform
* that is used in the main stack should be ported for use elsewhere.
*
* @param string|object className to modularize, or an object of key/values.
* In the object case, the values are conditions that
* determine if the className keys should be included.
* @param [string ...] Variable list of classNames in the string case.
* @return string Renderable space-separated CSS className.
*/
function cx(classNames) {
if (typeof classNames == 'object') {
return Object.keys(classNames).filter(function(className) {
return classNames[className];
}).join(' ');
} else {
return Array.prototype.join.call(arguments, ' ');
}
}
module.exports = cx;
});