export type Direction = '+' | '-';
export type ChangeHandler = (event: {
    matches: boolean;
}) => void;
export interface RegistryItem {
    mql: MediaQueryList;
    handlers: Set<ChangeHandler>;
}
export interface Subscription {
    matches: boolean;
    unsubscribe: () => void;
}
export type Registry = {
    items: Record<string, RegistryItem | undefined>;
    subscribe: (query: string, handler: ChangeHandler) => Subscription;
};