import { ReactiveController, ReactiveControllerHost } from 'lit';
/**
 * Base controller class that all reactive controllers extend from.
 * Provides common functionality for registering with a host element.
 */
export declare abstract class BaseController implements ReactiveController {
    protected host: ReactiveControllerHost;
    constructor(host: ReactiveControllerHost);
    hostConnected?(): void;
    hostDisconnected?(): void;
    hostUpdate?(): void;
    hostUpdated?(): void;
}
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