lodash/lodash.forinright/index.js

/**
 * lodash 4.1.1 (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="npm" -o ./`
 * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 * Available under MIT license <https://lodash.com/license>
 */
var baseForRight = require('lodash._baseforright'),
    keysIn = require('lodash.keysin');

/**
 * Casts `value` to `identity` if it's not a function.
 *
 * @private
 * @param {*} value The value to inspect.
 * @returns {Array} Returns the array-like object.
 */
function baseCastFunction(value) {
  return typeof value == 'function' ? value : identity;
}

/**
 * This method is like `_.forIn` except that it iterates over properties of
 * `object` in the opposite order.
 *
 * @static
 * @memberOf _
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns `object`.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.forInRight(new Foo, function(value, key) {
 *   console.log(key);
 * });
 * // => logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'
 */
function forInRight(object, iteratee) {
  return object == null
    ? object
    : baseForRight(object, baseCastFunction(iteratee), keysIn);
}

/**
 * This method returns the first argument given to it.
 *
 * @static
 * @memberOf _
 * @category Util
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'user': 'fred' };
 *
 * _.identity(object) === object;
 * // => true
 */
function identity(value) {
  return value;
}

module.exports = forInRight;