reject.js

var arrayFilter = require('../internal/arrayFilter'),
    baseCallback = require('../internal/baseCallback'),
    baseFilter = require('../internal/baseFilter'),
    isArray = require('../lang/isArray');

/**
 * The opposite of `_.filter`; this method returns the elements of `collection`
 * that `predicate` does **not** return truthy for.
 *
 * @static
 * @memberOf _
 * @category Collection
 * @param {Array|Object|string} collection The collection to iterate over.
 * @param {Function|Object|string} [predicate=_.identity] The function invoked
 *  per iteration.
 * @param {*} [thisArg] The `this` binding of `predicate`.
 * @returns {Array} Returns the new filtered array.
 * @example
 *
 * _.reject([1, 2, 3, 4], function(n) {
 *   return n % 2 == 0;
 * });
 * // => [1, 3]
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36, 'active': false },
 *   { 'user': 'fred',   'age': 40, 'active': true }
 * ];
 *
 * // using the `_.matches` callback shorthand
 * _.pluck(_.reject(users, { 'age': 40, 'active': true }), 'user');
 * // => ['barney']
 *
 * // using the `_.matchesProperty` callback shorthand
 * _.pluck(_.reject(users, 'active', false), 'user');
 * // => ['fred']
 *
 * // using the `_.property` callback shorthand
 * _.pluck(_.reject(users, 'active'), 'user');
 * // => ['barney']
 */
function reject(collection, predicate, thisArg) {
  var func = isArray(collection) ? arrayFilter : baseFilter;
  predicate = baseCallback(predicate, thisArg, 3);
  return func(collection, function(value, index, collection) {
    return !predicate(value, index, collection);
  });
}

module.exports = reject;