/**
 * Lo-Dash 2.4.1 (Custom Build) <http://lodash.com/>
 * Build: `lodash modularize underscore exports="node" -o ./underscore/`
 * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <http://lodash.com/license>
 */
var keys = require('./keys');

/**
 * Creates an object composed of the inverted keys and values of the given object.
 *
 * @static
 * @memberOf _
 * @category Objects
 * @param {Object} object The object to invert.
 * @returns {Object} Returns the created inverted object.
 * @example
 *
 * _.invert({ 'first': 'fred', 'second': 'barney' });
 * // => { 'fred': 'first', 'barney': 'second' }
 */
function invert(object) {
  var index = -1,
      props = keys(object),
      length = props.length,
      result = {};

  while (++index < length) {
    var key = props[index];
    result[object[key]] = key;
  }
  return result;
}

module.exports = invert;