← back to v140 · serviceworkerautopreload-browser-mode
conformance · v140
v140 · serviceworkerautopreload-browser-mode — conformance probe
5 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.
0
pass
0
fail
0
blocked
5
total
| id | contract | kind | verdict | detail |
|---|---|---|---|---|
serviceworker-container-exists |
navigator.serviceWorker exposes the ServiceWorkerContainer that owns browser-mode preload decisions. spec ↗ | exists | … | |
serviceworker-register-is-function |
ServiceWorkerContainer.register is callable for installing the worker whose fetch path can use auto preload. spec ↗ | typeof | … | |
serviceworker-ready-is-promise |
navigator.serviceWorker.ready is a Promise for the active registration. spec ↗ | script | … | |
navigation-preload-manager-exists |
ServiceWorkerRegistration.navigationPreload exposes the established preload control surface adjacent to auto preload. spec ↗ | script | … | |
performance-workerstart-exists |
PerformanceResourceTiming.workerStart exists for observing service-worker startup work. spec ↗ | script | … |