/**
   * Copyright (C) 2016 Michael Kourlas
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /**
   * Verifies that the specified string only contains characters permitted by the
   * XML specification.
   *
   * @param str The string to validate.
   *
   * @returns Whether the specified string only contains characters permitted by
   *          the XML specification.
   *
   * @private
   */
  export declare function validateChar(str: string): boolean;
  /**
   * Verifies that the specified string only contains a single character, and
   * that this character is permitted by the XML specification.
   *
   * @param str The string to validate.
   *
   * @returns Whether the specified string only contains a single character, and
   *          that this character is permitted by the XML specification.
   *
   * @private
   */
  export declare function validateSingleChar(str: string): boolean;
  /**
   * Verifies that the specified string only contains characters permitted by the
   * XML specification for names.
   *
   * @param str The string to validate.
   *
   * @returns Whether the specified string only contains characters permitted by
   *          the XML specification for names.
   *
   * @private
   */
  export declare function validateName(str: string): boolean;