export type CachedRendererSlot<T = unknown> = {
    component: T;
    wrapped: unknown;
};
export declare class MountRegistry {
    private entries;
    private nextId;
    readonly cellRendererCache: Map<string, CachedRendererSlot<unknown>>;
    readonly headerRendererCache: Map<string, CachedRendererSlot<unknown>>;
    register(container: HTMLElement, dispose: () => void): void;
    /** True when `container` is a live registered mount host (not yet disposed). */
    isRegistered(container: HTMLElement): boolean;
    disposeHost: (host: HTMLElement) => void;
    clear(): void;
    pruneRendererCaches(liveAccessors: ReadonlySet<string>): void;
    get size(): number;
}