| <!DOCTYPE html> | |
| <script src="/resources/testharness.js"></script> | |
| <script src="/resources/testharnessreport.js"></script> | |
| <script> | |
| test(() => { | |
| assert_true(Object.isFrozen(new IntersectionObserver(() => {}).thresholds)); | |
| }, "Check thresholds is FrozenArray."); | |
| </script> |