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conformance · v139
v139 · chrome-removes-support-for-macos-11 — 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 |
|---|---|---|---|---|
navigator-user-agent-exposed |
navigator.userAgent is exposed; on supported (macOS 12+) systems the UA string still parses and includes a version >= 10_15_7 / 12+ for Mac. | typeof | … | |
navigator-platform-still-readable |
navigator.platform still resolves to a string on the supported platforms the visitor is running. | typeof | … | |
user-agent-data-when-present |
When navigator.userAgentData is present, it surfaces a getHighEntropyValues() method that can report platformVersion (used by sites to handle OS deprecations gracefully). | script | … | |
no-macos-11-build-flag |
Chrome no longer ships a macOS 11 build; the runtime has no client hint promising support for that OS family. The visitor's UA mac-version, if present, should be parseable as a major version. | script | … | |
chrome-major-version-at-least-139 |
If the visitor reports a Chrome major version, it should be at or above 139 (the first release without macOS 11 support). | script | … |