challenge-algorithms-v2.0-andresa-combat/09-mostRepeatedChar/index.js

export function mostUsedChar(text) {
  var getMax = function (str) {
    var max = 0,
      maxChar = "";
    str.split("").forEach(function (char) {
      if (str.split(char).length > max) {
        max = str.split(char).length;
        maxChar = char;
      }
    });
    return maxChar;
  };

  return getMax(text);
}