| Leo Repp | 58b9f11 | 2021-11-22 11:57:47 +0100 | [diff] [blame^] | 1 | var isSymbol = require('./isSymbol'); |
| 2 | |
| 3 | /** |
| 4 | * The base implementation of methods like `_.max` and `_.min` which accepts a |
| 5 | * `comparator` to determine the extremum value. |
| 6 | * |
| 7 | * @private |
| 8 | * @param {Array} array The array to iterate over. |
| 9 | * @param {Function} iteratee The iteratee invoked per iteration. |
| 10 | * @param {Function} comparator The comparator used to compare values. |
| 11 | * @returns {*} Returns the extremum value. |
| 12 | */ |
| 13 | function baseExtremum(array, iteratee, comparator) { |
| 14 | var index = -1, |
| 15 | length = array.length; |
| 16 | |
| 17 | while (++index < length) { |
| 18 | var value = array[index], |
| 19 | current = iteratee(value); |
| 20 | |
| 21 | if (current != null && (computed === undefined |
| 22 | ? (current === current && !isSymbol(current)) |
| 23 | : comparator(current, computed) |
| 24 | )) { |
| 25 | var computed = current, |
| 26 | result = value; |
| 27 | } |
| 28 | } |
| 29 | return result; |
| 30 | } |
| 31 | |
| 32 | module.exports = baseExtremum; |