ut2/lib/internals/createExtremum.js

一个现代 JavaScript 实用工具库。[点击查看在线文档]。

'use strict';

var isArray = require('../isArray.js');
var isSymbol = require('../isSymbol.js');
var createIteratee = require('./createIteratee.js');
var native = require('./native.js');

function createExtremum(array, comparator, iteratee) {
    if (!isArray(array)) {
        return;
    }
    var result, computed;
    var internalIteratee = createIteratee(iteratee);
    array.forEach(function (value, index) {
        var current = internalIteratee(value, index, array);
        if (current != null && (computed === native.nativeUndefined ? current === current && !isSymbol(current) : comparator(current, computed))) {
            computed = current;
            result = value;
        }
    });
    return result;
}

module.exports = createExtremum;