const sortByLength = (strs) => {
    const compare = (a, b) => {
        return a.length < b.length ? -1 : 1
    }
    return strs.sort(compare)
}

/**
* Test Suite 
*/
describe('sortByLength()', () => {
    it('sorts the strings from shortest to longest', () => {
        // arrange
        const strs = ["abc", "", "aaa", "a", "zz"];
        
        // act
        const result = sortByLength(strs);

        // log
        console.log("result: ", result);
        
        // assert
        expect(result).toEqual(["", "a", "zz", "abc", "aaa"]);
    });
});