function domainType(domains) {
    //  write code here.
    let result = domains.map(domain=>{
        domainSingle = domain.split('.')
        if (domainSingle[(domainSingle.length-1)] === "org") return 'organization'
        else if (domainSingle[(domainSingle.length-1)] === "net") return 'network'
        else if (domainSingle[(domainSingle.length-1)] === "info") return 'information'
        else if (domainSingle[(domainSingle.length-1)] === "com") return 'commercial'
    })
    return result
}



/**
* 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"]);
    });
});