Object vs Set

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Object
const lookup = {};
const id = 12;
let found = false;
for (let i = 0; i < 100; i++) {
	lookup[i] = true;
}

if (lookup[id]) {
	found = true;
}
ready
Set
const lookup = new Set();
const id = 12;
let found = false;
for (let i = 0; i < 100; i++) {
	lookup.add(i)
}

if (lookup.has(id)) {
	found = true;
}
ready

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