maintainability.js

/*

    starting code

Maintainability index: 103.291144930526
Physical LOC: 11
Logical LOC: 12
Aggregate cyclomatic complexity: 5
Functions:

 */

for (var i = 1; i <= 100; ++i) {
    if (i % 15 === 0) {
        console.log('FizzBuzz');
    } else if (i % 3 === 0) {
        console.log('Fizz');
    } else if (i % 5 === 0) {
        console.log('Buzz');
    } else {
        console.log(i);
    }
}

/*

    refactor for maintainability #1

Maintainability index: 128.21240123234207
Physical LOC: 3
Logical LOC: 3
Aggregate cyclomatic complexity: 5
Functions:

*/

for (var i = 1; i <= 100; ++i) {
    console.log(
        i % 15 === 0 ? 'FizzBuzz' :
            i % 3 === 0  ? 'Fizz' :
                i % 5 === 0  ? 'Buzz' :
                    i
    );
}

/*

    refactor for maintainability #2

Maintainability index: 151.16128063719958
Physical LOC: 9
Logical LOC: 5
Aggregate cyclomatic complexity: 5
Functions:
    translate
        Line No.: 1
        Physical LOC: 6
        Logical LOC: 1
        Cyclomatic complexity: 4
        Halstead difficulty: 3.5
        Halstead volume: 86.03910001730776
        Halstead effort: 301.13685006057716

*/

function translate(i) {
    return i % 15 === 0 ? 'FizzBuzz' :
        i % 3 === 0  ? 'Fizz' :
            i % 5 === 0  ? 'Buzz' :
                i;
}
for (var i = 1; i <= 100; ++i) {
    console.log(translate(i));
}

/*

    refactor for maintainability #3

 Maintainability index: 155.79165510215708
 Physical LOC: 15
 Logical LOC: 11
 Aggregate cyclomatic complexity: 5
 Functions:
     toFizzBuzz
         Line No.: 1
         Physical LOC: 3
         Logical LOC: 1
         Cyclomatic complexity: 1
         Halstead difficulty: 2.5
         Halstead volume: 27
         Halstead effort: 67.5
     toFizz
         Line No.: 4
         Physical LOC: 3
         Logical LOC: 1
         Cyclomatic complexity: 1
         Halstead difficulty: 2.5
         Halstead volume: 27
         Halstead effort: 67.5
     toBuzz
         Line No.: 7
         Physical LOC: 3
         Logical LOC: 1
         Cyclomatic complexity: 1
         Halstead difficulty: 2.5
         Halstead volume: 27
         Halstead effort: 67.5


*/

function toFizzBuzz(i) {
    return i % 15 === 0 && "FizzBuzz";
}
function toFizz(i) {
    return i % 3 === 0 && "Fizz";
}
function toBuzz(i) {
    return i % 5 === 0 && "Buzz";
}
for (var i = 1; i <= 100; ++i) {
    console.log(toFizzBuzz(i) || toFizz(i) || toBuzz(i) || i);
}

/*

 refactor for maintainability #4

 Maintainability index: 160.41393905287168
 Physical LOC: 14
 Logical LOC: 6
 Aggregate cyclomatic complexity: 5
 Functions:
     isFactor
         Line No.: 1
         Physical LOC: 5
         Logical LOC: 1
         Cyclomatic complexity: 1
         Halstead difficulty: 1
         Halstead volume: 8
         Halstead effort: 8
     <anonymous>
         Line No.: 2
         Physical LOC: 3
         Logical LOC: 1
         Cyclomatic complexity: 1
         Halstead difficulty: 2
         Halstead volume: 18.094737505048094
         Halstead effort: 36.18947501009619

*/

function isFactor(n) {
    return function (i) {
        return i % n === 0;
    };
}

for (var i = 1; i <= 100; ++i) {
    console.log(
        isFactor(15)(i) && "FizzBuzz" ||
        isFactor(3)(i) && "Fizz" ||
        isFactor(5)(i) && "Buzz" ||
        i
    );
}