ProtectedconstructorEvery registered descriptor, for UI and diagnostics.
StaticInstanceLooks a modality up by key, case- and whitespace-insensitively.
Returns undefined for an unregistered key rather than throwing: an unknown modality is
transportable-but-unreasoned-about by design, so callers fall back to the descriptor on the
track itself.
The Global Object Store is a place to store global objects that need to be shared across the application. Depending on the execution environment, this could be the window object in a browser, or the global object in a node environment, or something else in other contexts. The key here is that in some cases static variables are not truly shared because it is possible that a given class might have copies of its code in multiple paths in a deployed application. This approach ensures that no matter how many code copies might exist, there is only one instance of the object in question by using the Global Object Store.
Registers (or replaces) a modality descriptor.
Last registration wins, matching MJGlobal.ClassFactory's own convention, so a deployment can
refine a well-known modality — raising RequiresConsent on video for a stricter
jurisdiction, say — without a code change here.
Protected StaticgetReturns the singleton instance of the class. If the instance does not exist, it is created and stored in the Global Object Store. If className is provided it will be used as part of the key in the Global Object Store, otherwise the actual class name will be used. NOTE: the class name used by default is the lowest level of the object hierarchy, so if you have a class that extends another class, the lowest level class name will be used.
OptionalclassName: string
The modality registry — an open vocabulary with a known core.
A code registry rather than a database table, deliberately: the well-known keys plus every modality we can currently name are covered without one, and an unregistered key still transports. A table earns itself the day a customer must add a modality without shipping a release; at that point it is purely additive (see
plans/realtime/gemini-3-8-live.md§9.1).BaseSingletonrather than astatic _instanceso a bundler that loads this module twice does not produce two registries with divergent contents.