function domainType(domains) {
    //  write code here.
    const domainsLabels = {
        info: 'information',
        org: 'organization',
        net: 'network',
        com: 'commercial'
    }
    
    return domains.map(domain => {
        return domainsLabels[ domain.substr(domain.lastIndexOf('.') + 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"]);
    });
});