Type Alias: MediaSessionErrorCode

type MediaSessionErrorCode = "invalidArgument" | "alreadyInitialized" | "notInitialized";

Defined in: packages/media-session/src/errors.ts:9

Why a media-session call was rejected.

A closed union rather than free-form messages so callers can branch (and so tests assert on the code, not on prose). CLAUDE.md principle 6.