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34 lines
1.1 KiB
JavaScript
34 lines
1.1 KiB
JavaScript
var arrayExtremum = require('./arrayExtremum'),
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baseCallback = require('./baseCallback'),
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baseExtremum = require('./baseExtremum'),
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isArray = require('../lang/isArray'),
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isIterateeCall = require('./isIterateeCall'),
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toIterable = require('./toIterable');
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/**
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* Creates a `_.max` or `_.min` function.
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*
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* @private
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* @param {Function} comparator The function used to compare values.
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* @param {*} exValue The initial extremum value.
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* @returns {Function} Returns the new extremum function.
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*/
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function createExtremum(comparator, exValue) {
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return function(collection, iteratee, thisArg) {
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if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
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iteratee = undefined;
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}
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iteratee = baseCallback(iteratee, thisArg, 3);
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if (iteratee.length == 1) {
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collection = isArray(collection) ? collection : toIterable(collection);
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var result = arrayExtremum(collection, iteratee, comparator, exValue);
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if (!(collection.length && result === exValue)) {
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return result;
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}
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}
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return baseExtremum(collection, iteratee, comparator, exValue);
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};
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}
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module.exports = createExtremum;
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