Set.prototype.delete()

const set1 = new Set();
set1.add({ x: 10, y: 20 }).add({ x: 20, y: 30 });

// Delete any point with `x > 10`.
set1.forEach((point) => {
  if (point.x > 10) {
    set1.delete(point);
  }
});

console.log(set1.size);
// Expected output: 1

var mySet = new Set();
mySet.add("foo");

mySet.delete("bar"); //  false.   "bar"  .
mySet.delete("foo"); //  true.   .

mySet.has("foo"); //  false.  "foo"   .

var setObj = new Set(); //   Set.

setObj.add({ x: 10, y: 20 }); //    .

setObj.add({ x: 20, y: 30 }); //    .

//   point  `x > 10`.
setObj.forEach(function (point) {
  if (point.x > 10) {
    setObj.delete(point);
  }
});