33 lines
897 B
JavaScript
33 lines
897 B
JavaScript
|
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;
|