import assert from 'assert';

export const mergeRegex = (...regexes: (string | RegExp)[]): RegExp => {
  assert(
    regexes.length,
    'mergeRegex: regular expression array should not be empty.',
  );
  const sources = regexes.map(regex =>
    regex instanceof RegExp ? regex.source : regex,
  );

  return new RegExp(sources.join('|'));
};