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conformance · v142

v142 · web-speech-api-contextual-biasing — 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://webaudio.github.io/web-speech-api/ chromestatus: #5225615177023488 generated 2026-06-01T08:13:10Z by conformance-author-v1-subagent
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id contract kind verdict detail
speech-recognition-exposed SpeechRecognition (or webkitSpeechRecognition) is exposed; the phrases attribute hangs off this interface. script
speech-recognition-phrase-constructor SpeechRecognitionPhrase is a constructor; new SpeechRecognitionPhrase('foo', 2.0) succeeds. spec ↗ script
phrase-default-boost-is-one The boost argument defaults to 1.0 when omitted. script
phrase-attribute-readonly SpeechRecognitionPhrase.phrase is readonly: writing to it is silently ignored (no setter). script
phrases-observable-array-on-recognition A SpeechRecognition instance exposes a phrases attribute that supports Array-style push() for adding biasing phrases. spec ↗ script
speech-recognition-start-still-function SpeechRecognition.prototype.start remains the entry point to actually run recognition; contextual biasing does not change this surface. script