const s = "JavaScript";
const str = new String(s);
console.log(str === s, str == s, typeof str, str.at(-1), s.at(-1));

const a = [] + [];
const b = [] + {};
const c = {} + [];
const d = 1 + "1" - 1;
const e = "5" - "2" + "3";
const f = [1, 2] == "1,2";
console.log(a, b, c, d, e, f);

const base = { greet() { return 'hi'; } };
const obj = Object.create(base, {
  x: { value: 1, enumerable: true },
  y: { value: 2, enumerable: false }
});
const spread = { ...obj };
const assigned = Object.assign({}, obj);
console.log(
  spread.x,
  spread.y,
  spread.greet,
  assigned.y,
  Object.keys(spread).length
);