lodash/lodash.findlast/index.js

/**
 * lodash 4.2.1 (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 baseEachRight = require('lodash._baseeachright'),
    baseFind = require('lodash._basefind'),
    baseFindIndex = require('lodash._basefindindex'),
    baseIteratee = require('lodash._baseiteratee');

/**
 * This method is like `_.find` except that it iterates over elements of
 * `collection` from right to left.
 *
 * @static
 * @memberOf _
 * @category Collection
 * @param {Array|Object} collection The collection to search.
 * @param {Function|Object|string} [predicate=_.identity] The function invoked per iteration.
 * @returns {*} Returns the matched element, else `undefined`.
 * @example
 *
 * _.findLast([1, 2, 3, 4], function(n) {
 *   return n % 2 == 1;
 * });
 * // => 3
 */
function findLast(collection, predicate) {
  predicate = baseIteratee(predicate, 3);
  if (isArray(collection)) {
    var index = baseFindIndex(collection, predicate, true);
    return index > -1 ? collection[index] : undefined;
  }
  return baseFind(collection, predicate, baseEachRight);
}

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @type {Function}
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(document.body.children);
 * // => false
 *
 * _.isArray('abc');
 * // => false
 *
 * _.isArray(_.noop);
 * // => false
 */
var isArray = Array.isArray;

module.exports = findLast;