define(['../internal/baseToString', '../internal/root'], function(baseToString, root) {

  /* Native method references for those with the same name as other `lodash` methods. */
  var nativeFloor = Math.floor,
      nativeIsFinite = root.isFinite;

  /**
   * Repeats the given string `n` times.
   *
   * @static
   * @memberOf _
   * @category String
   * @param {string} [string=''] The string to repeat.
   * @param {number} [n=0] The number of times to repeat the string.
   * @returns {string} Returns the repeated string.
   * @example
   *
   * _.repeat('*', 3);
   * // => '***'
   *
   * _.repeat('abc', 2);
   * // => 'abcabc'
   *
   * _.repeat('abc', 0);
   * // => ''
   */
  function repeat(string, n) {
    var result = '';
    string = baseToString(string);
    n = +n;
    if (n < 1 || !string || !nativeIsFinite(n)) {
      return result;
    }
    // Leverage the exponentiation by squaring algorithm for a faster repeat.
    // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
    do {
      if (n % 2) {
        result += string;
      }
      n = nativeFloor(n / 2);
      string += string;
    } while (n);

    return result;
  }

  return repeat;
});