| PASS postMessage to a ServiceWorker (and back via MessagePort) | |
| PASS postMessage a transferable ArrayBuffer between ServiceWorker and Client | |
| PASS postMessage a transferable ArrayBuffer between ServiceWorker and Client over MessagePort | |
| FAIL postMessage with dictionary a transferable ArrayBuffer between ServiceWorker and Client promise_test: Unhandled rejection with value: object "TypeError: Type error" | |
| PASS postMessage to a redundant worker | |