function domainType(domains) {
    //  write code here.
    const result = []
    
    for( domain of domains) {
        const lastIndex = domain.lastIndexOf('.')
        const domainArray = []
        
        for(let i = lastIndex; i<domain.length; i++ ){
            domainArray.push(domain[i])
        }
    
        switch (domainArray.join("")){
            case '.org':
                result.push('organization')
                break;
            case '.com':
                result.push('commercial')
                break;
            case '.net':
                result.push('network')
                break;
            case '.info':
                result.push('information')
                break;
            defult: break;
            
        }
    }
    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"]);
    });
});