v151 · Permissions Policy · Security
Failure Mode Lab
10 failure-mode and edge-case tests: API detection, policy default state, focus() with no user gesture, focus() after user gesture, iframe policy inheritance, document.featurePolicy API, policy header parsing fallback, secure context, cross-origin iframe denial, and recovery patterns. All run without navigation or iframes.
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implementation reference
Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗