{
    declare class $ReadOnlyArray {}
    declare class $ReadOnlyMap {}
    declare class $ReadOnlySet {}
    declare class ReadonlyArray {}
    declare class ReadonlyMap {}
    declare class ReadonlySet {}
}

{
    class $ReadOnlyArray {}
    class $ReadOnlyMap {}
    class $ReadOnlySet {}
    class ReadonlyArray {}
    class ReadonlyMap {}
    class ReadonlySet {}
}
