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conformance · v147

v147 · js-profiling-in-dedicated-workers — conformance probe

6 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://wicg.github.io/js-self-profiling/ chromestatus: #5159559872249856 generated 2026-06-05T14:41:42Z by codex-auto-research
0
pass
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fail
0
blocked
6
total
id contract kind verdict detail
profiler-exists-on-window Profiler is exposed on the main thread window object. exists
profiler-typeof Profiler is a constructor function on the main thread. typeof
profiler-constructs-and-stops-on-main-thread A main-thread Profiler can be constructed under the page Document-Policy and stop() resolves to the JS Self-Profiling trace shape. script
profiler-supported-in-dedicated-worker A Blob Dedicated Worker checks the worker global scope for the Profiler constructor added by the feature. script
profiler-policy-header-present The demo and conformance routes are served with a Document-Policy header that enables JS self-profiling. script
profiler-rejects-negative-sample-interval The Profiler constructor rejects an invalid negative sampleInterval value. script