1:  console.log(10n < 20n);       // Output: true (BigInt comparison)

   2:  console.log(10n < 20);        // Output: true (20 coerced to BigInt)

   3:  console.log(10n < "20");      // Output: true ("20" coerced to BigInt)

   4:  console.log(10n > 10n);    // Output: false

   5:  // If one BigInt can't be converted to the other type: numeric coercion

   6:  console.log(10n < { valueOf() { return 20 } }); //true,  valueOf() called, then numeric coercion