If you pass an iterable (such as an array) to a Set constructor, then all of its elements will be added to the new Set. For example:
// ES6+
const arr = [1, 2, 3, 3, 4];
const set = new Set(arr);
console.log(set); // Set(4) { 1, 2, 3, 4 }
In this way, you can easily convert a JavaScript array to a Set object.
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