IPermissions

Query a permission's state (granted/denied/prompt) before prompting.

• Wraps: Permissions API
• MDN: Permissions API
• Home: Rask.Core.Browser (all hosts)
• Shape: one-shot
• Availability: Web/Server ✅ · PWA/WASM ✅

Support is patchy across engines

navigator.permissions.query answers for different names in different engines. WebKit (Safari) answers only for camera and microphone; geolocation and notifications throw NotSupportedError, and the clipboard/persistent-storage names throw TypeError. An unrecognised name faults the awaited task with a JSException, so gate accordingly — or catch and treat a fault as "unknown".

See also

• Source: IPermissions.cs
• Capability matrix
• Browser APIs — the narrative map