minBy

/**
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The iteratee invoked per element.
 * @returns {*} Returns the minimum value.
 */
export default function minBy(array, iteratee) {
  if (array.length === 0) {
    return undefined;
  }

  let minItem;
  let minValue;

  for (const item of array) {
    const value = iteratee(item);

    // Skip undefined results
    if (value === undefined) {
      continue;
    }

    if (minItem === undefined || value < minValue) {
      minItem = item;
      minValue = value;
    }
  }

  return minItem;
}