// Using an Object literal:
function getTLD (tld) {
  const tlds = {
    'org': () => 'organization',
    'com': () => 'commercial',
    'net': () => 'network',
    'info': () => 'information',
    'default': () => 'unrecognised',
  };
  return (tlds[tld] || tlds['default'])();
}

// Using a plain Object:
// const tlds = {
//     org: 'organization',
//     com: 'commercial',
//     net: 'network',
//     info: 'information'
// }
// const domainType = ds => ds.map(d => tlds[d.split('.')[d.split('.').length - 1]])

const domainType = ds => ds.map(d => getTLD(d.split('.')[d.split('.').length - 1]))




/**
* Test Suite 
*/
describe('domainType()', () => {
    it('returns list of domain types', () => {
        // arrange
        const domains = ["en.wiki.org", "codefights.com", "happy.net", "code.info"];
        
        // act
        const result = domainType(domains);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toEqual(["organization", "commercial", "network", "information"]);
    });
});