text: /// <reference path="Validation.ts" />
  var Validation;
  (function (Validation) {
      var lettersRegexp = /^[A-Za-z]+$/;
      var LettersOnlyValidator = /** @class */ (function () {
          function LettersOnlyValidator() {
          }
          LettersOnlyValidator.prototype.isAcceptable = function (s) {
              return lettersRegexp.test(s);
          };
          return LettersOnlyValidator;
      }());
      Validation.LettersOnlyValidator = LettersOnlyValidator;
  })(Validation || (Validation = {}));
  