import { LeviarObject } from '../LeviarObject.js';
import { BaseTransition } from './BaseTransition.js';
import type { EasingType } from '../types.js';
export declare class FadeTransition extends BaseTransition<LeviarObject> {
    constructor(target: LeviarObject);
    start(durationMs: number, easing: EasingType | undefined, type: 'in' | 'out'): this;
}