Sets causing tons of GC

set-gc.js

const map = new Map();
const set = new Set();
const MAX_KEYS = 10 * 1024 * 1024;
const SET_KEYS = 10 * 1024 * 1024;

console.log("Call map.set() a LOT");
for (let i = 0; i < MAX_KEYS; i++) {
    map.set(i, i);
}

for (let i = 0; i < SET_KEYS; i++) {
    set.add(Math.floor(Math.random() * SET_KEYS));
}

for (let n of map) {
    set.has(n);
}

console.log("DONE");