type CheckDisjunction = Array<string | string[] | { and: string[] }>;
const bla: CheckDisjunction = [{ and: ['adefag', 'daefag'] }, 'bla', ['sdgdrs', 'aefawg'], { and: [''] }];

const blubb: CheckDisjunction = [
  {
    and: ['coachingsamtherz', 'coachingsamtherz\\.de', '<title>[^<]*(coaching\\s*samt\\s*herz)[^<]*</title>']
  },
  {
    and: ['Maintenance', 'Login']
  },
  {
    and: ['Down', 'NSA hacked this site']
  }
];