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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;