| var isSymbol = require('./isSymbol'); | |
| 
 | |
| /** | |
|  * The base implementation of methods like `_.max` and `_.min` which accepts a | |
|  * `comparator` to determine the extremum value. | |
|  * | |
|  * @private | |
|  * @param {Array} array The array to iterate over. | |
|  * @param {Function} iteratee The iteratee invoked per iteration. | |
|  * @param {Function} comparator The comparator used to compare values. | |
|  * @returns {*} Returns the extremum value. | |
|  */ | |
| function baseExtremum(array, iteratee, comparator) { | |
|   var index = -1, | |
|       length = array.length; | |
| 
 | |
|   while (++index < length) { | |
|     var value = array[index], | |
|         current = iteratee(value); | |
| 
 | |
|     if (current != null && (computed === undefined | |
|           ? (current === current && !isSymbol(current)) | |
|           : comparator(current, computed) | |
|         )) { | |
|       var computed = current, | |
|           result = value; | |
|     } | |
|   } | |
|   return result; | |
| } | |
| 
 | |
| module.exports = baseExtremum;
 |