|  | var baseExtremum = require('./_baseExtremum'), | 
|  | baseIteratee = require('./_baseIteratee'), | 
|  | baseLt = require('./_baseLt'); | 
|  |  | 
|  | /** | 
|  | * This method is like `_.min` except that it accepts `iteratee` which is | 
|  | * invoked for each element in `array` to generate the criterion by which | 
|  | * the value is ranked. The iteratee is invoked with one argument: (value). | 
|  | * | 
|  | * @static | 
|  | * @memberOf _ | 
|  | * @since 4.0.0 | 
|  | * @category Math | 
|  | * @param {Array} array The array to iterate over. | 
|  | * @param {Function} [iteratee=_.identity] The iteratee invoked per element. | 
|  | * @returns {*} Returns the minimum value. | 
|  | * @example | 
|  | * | 
|  | * var objects = [{ 'n': 1 }, { 'n': 2 }]; | 
|  | * | 
|  | * _.minBy(objects, function(o) { return o.n; }); | 
|  | * // => { 'n': 1 } | 
|  | * | 
|  | * // The `_.property` iteratee shorthand. | 
|  | * _.minBy(objects, 'n'); | 
|  | * // => { 'n': 1 } | 
|  | */ | 
|  | function minBy(array, iteratee) { | 
|  | return (array && array.length) | 
|  | ? baseExtremum(array, baseIteratee(iteratee, 2), baseLt) | 
|  | : undefined; | 
|  | } | 
|  |  | 
|  | module.exports = minBy; |