import { BaseDirective } from './directive';
interface IntersectionOptions {
    threshold?: number | number[];
    root?: Element | null;
    rootMargin?: string;
}
export declare class IntersectionDirective extends BaseDirective {
    private observer;
    private callback;
    private options;
    constructor(element: Element);
    mount(element: Element): void;
    update(callback: (isVisible: boolean) => void): void;
    unmount(): void;
    setOptions(options: Partial<IntersectionOptions>): void;
}
export {};
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