for vs spread

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Testing in
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for
const x = new Set();
const arr = new Array(1000).fill(0);
const l = arr.length;
for (var i = 0; i < l; i++) {
	x.add(arr);
}
ready
constructor
const arr = new Array(1000).fill(0);
const x = new Set(arr);
ready
spread
const arr = new Array(1000).fill(0);
const x = new Set([...arr]);
ready

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