| tst.js:1:1:1:8 | x == NaN | Useless comparison with NaN. |
| tst.js:2:1:2:8 | x != NaN | Useless comparison with NaN. |
| tst.js:3:1:3:9 | x === NaN | Useless comparison with NaN. |
| tst.js:4:1:4:9 | NaN !== x | Useless comparison with NaN. |
| tst.js:5:1:5:7 | x < NaN | Useless comparison with NaN. |
| tst.js:6:1:6:11 | NaN === NaN | Useless comparison with NaN. |