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'use strict';

try {
  const isValidUTF8 = require('utf-8-validate');

  exports.isValidUTF8 =
    typeof isValidUTF8 === 'object'
      ? isValidUTF8.Validation.isValidUTF8 // utf-8-validate@<3.0.0
      : isValidUTF8;
} catch (e) /* istanbul ignore next */ {
  exports.isValidUTF8 = () => true;
}

/**
 * Checks if a status code is allowed in a close frame.
 *
 * @param {Number} code The status code
 * @return {Boolean} `true` if the status code is valid, else `false`
 * @public
 */
exports.isValidStatusCode = (code) => {
  return (
    (code >= 1000 &&
      code <= 1013 &&
      code !== 1004 &&
      code !== 1005 &&
      code !== 1006) ||
    (code >= 3000 && code <= 4999)
  );
};