Chunk array with dynamic group length

chunkArray.js

let res = [];
let base = [1, 2, 3, 4];
let groupQuantity = 2;
for(let i = 0; i < base.length; i += groupQuantity) {
    let even = [];
    
    for(let gq = 0; gq < groupQuantity; gq++) {
        base[i + gq] ? even.push(base[i + gq]) : {};
    }
    res.push(even);
}