import { ComputePositionConfig } from '@floating-ui/dom';
import { ReactiveControllerHost } from 'lit';
/**
 * A reactive controller that provides a directive that calls `autoUpdate` and `computePosition` of Floating UI library.
 * This provides a declarative way to update floating position automatically.
 *
 * 1. Create an instance of `FloatingUIAutoUpdateController` in the constructor or in a class field.
 * 2. Attach `instance.refFloating()` and `instance.refReference()` to appropriate elements.
 * 3. Call `instance.directive()` inside a html template.
 */
export declare class FloatingUIAutoUpdateController<T extends ReactiveControllerHost & HTMLElement> {
    private readonly _host;
    private readonly _isOptionsUpdated?;
    private _floatingElement;
    private _referenceElement;
    /**
     * Context information to be passed with floating-ready event
     */
    private _triggerContext;
    constructor(_host: T, _isOptionsUpdated?: ((current: Partial<ComputePositionConfig>, previous: Partial<ComputePositionConfig>) => boolean) | undefined);
    /**
     * Set context information that will be included in the floating-ready event
     */
    setTriggerContext(context: Record<string, unknown>): void;
    /**
     * Clear the trigger context
     */
    clearTriggerContext(): void;
    private readonly _refCallbackFloating;
    private readonly _refCallbackReference;
    get floatingElement(): HTMLElement | undefined;
    get referenceElement(): Element | undefined;
    refFloating(): import('lit-html/directive.js').DirectiveResult<typeof import('lit-html/directives/ref.js').RefDirective>;
    refReference(): import('lit-html/directive.js').DirectiveResult<typeof import('lit-html/directives/ref.js').RefDirective>;
    directive(options: Partial<ComputePositionConfig>, enabled?: boolean): import('lit-html/directive.js').DirectiveResult<import('lit-html/directive.js').DirectiveClass>;
}