import type { BoxSliderOptions, Effect, ProgressiveTransitionState, TransitionSettings } from '../types';
export interface FadeSliderOptions {
    timingFunction?: string;
}
export default class FadeSlider implements Effect {
    readonly options: FadeSliderOptions;
    constructor(options?: FadeSliderOptions);
    initialize(el: HTMLElement, slides: HTMLElement[], options: BoxSliderOptions): void;
    destroy(_: HTMLElement, slides: HTMLElement[]): void;
    prepareTransition({ currentIndex, nextIndex, slides, speed, }: TransitionSettings): ProgressiveTransitionState;
}