const cool = {1: 1, 2: 2, 3: 3, 4: 4};

const shit = {5: 5, 6: 6, 7: 7, 8: 8};

​

const garbage = () => ({cool, shit});

​

let why;

​

for (var i = 0; i<10000; i++){

  why = {1: cool[1], 2: cool[2], 3: cool[3], 4: cool[4], 5: shit[5], 6: shit[6], 7: shit[7], 8: shit[8]};

}

const cool = {1: 1, 2: 2, 3: 3, 4: 4};

const shit = {5: 5, 6: 6, 7: 7, 8: 8};

​

const garbage = () => ({cool, shit});

​

let why;

​

for (var i = 0; i<10000; i++){

  why = garbage();

}