@jauntywunderkind/tc39-temporal/lib/compat.mjs

TC39 Proposal: Temporal

export function assign(target, source) {
  for (var name in source) {
    if (Object.prototype.hasOwnProperty.call(source, name)) target[name] = source[name];
  }
  return target;
}
export function unique(arr) {
  const obj = Object.create(null);
  for (var i = 0; i < arr.length; i++) {
    var v = arr[i];
    obj[v] = v;
  }
  var res = [];
  for (var p in obj) {
    res.push(obj[p]);
  }
  return res;
}