quick n dirty generator of 2^6 combinations

combos.js

const ATTRIBUTES = ['A', 'B', 'C', 'D', 'E', 'F'];

// type attribute = 'A' | 'B' | 'C' | 'D' | 'E' | 'F'
// type value = "x" | ""
// type combo = [value]

function combos() {
    return combosFrom(ATTRIBUTES, 0);
}

// ([attribute], index) -> [combo]
function combosFrom(attributes, from) {
    // attribute
    let attribute = attributes[from];

    if (from === attributes.length - 1) {
        return ['x', ''];
    }

    // [combo]
    let rest = combosFrom(attributes, from + 1);

    // [combo]
    let withAttributeOn = rest.map(combo => ['x'].concat(combo));

    // [combo]
    let withAttributeOff = rest.map(combo => [''].concat(combo));

    // [combo]
    return withAttributeOn.concat(withAttributeOff);
}

// ([combo]) -> [string]
function asCSV(combos) {
    return combos.map(combo => combo.join(','));
}

module.exports = function() {
    asCSV(combos()).map(row => { console.log(row) });
}