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conformance · v139

v139 · extended-lifetime-shared-workers — 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.

browser: spec: https://github.com/whatwg/html/commit/9c009049e4fa9dba638ef68ca502b781082bbb68 chromestatus: #5138641357373440 generated 2026-06-01T08:13:31Z by conformance-author-v1-subagent
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id contract kind verdict detail
shared-worker-exposed SharedWorker is exposed in window context — the constructor the extendedLifetime option attaches to. typeof
shared-worker-port A SharedWorker instance exposes a .port MessagePort for client communication. script
extended-lifetime-option-accepted The SharedWorker constructor accepts the extendedLifetime: true option without throwing. spec ↗ script
shared-worker-name-option-still-works The pre-existing name option for SharedWorker still works — the new extendedLifetime option is additive. script
shared-worker-module-type-still-works SharedWorker still accepts {type: 'module'} for ES module workers — the option dictionary remains extensible. script