Map vs Obj

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Map
const map = new Map();
for (let i = 0; i < 1000; i++) {
	map.set("_" + i.toString(), i);
}
for (let i = 0; i < 1000; i++) {
	if (map.get("_" + i.toString()) !== i) { throw new Error(); }
}
ready
Obj
const map = {};
for (let i = 0; i < 1000; i++) {
	map["_" + i.toString()] = i;
}
for (let i = 0; i < 1000; i++) {
	if (map["_" + i.toString()] !== i) { throw new Error(); }
}
ready

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