← back to v138 · serviceworker-support-for-speculation-rules-prefetch
conformance · v138
v138 · serviceworker-support-for-speculation-rules-prefetch — 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 |
|---|---|---|---|---|
service-worker-supported |
navigator.serviceWorker exists — required for SW-controlled prefetch to be observable. spec ↗ | exists | … | |
speculation-rules-supported |
HTMLScriptElement.supports('speculationrules') is true. spec ↗ | script | … | |
speculation-rules-script-injectable |
A speculation rules <script type=speculationrules> with a prefetch rule parses successfully. spec ↗ | script | … | |
service-worker-register-callable |
navigator.serviceWorker.register is a function — the registration surface that, when present, used to suppress prefetch and now permits it. | typeof | … | |
fetch-event-defined-in-sw-scope |
FetchEvent is defined (visible on window for type check); SW-intercepted prefetch flows through it. spec ↗ | script | … |