export function mostFrequentChar(text: string): string {
  const conteo: Record<string, number> = {};

  for(const caracter of text) {
    if (caracter in conteo)
      conteo[caracter] += 1;
    else
      conteo[caracter] = 1;
  }

  return Object.entries(conteo).reduce((max, actual) => actual[1] > max[1] ? actual: max)[0];
}