import type { FunnelManifest } from '../config/funnel.manifest.types.js';
export type StepImagePreload = {
    src: string;
    width?: number;
    height?: number;
};
export declare const resolveNextStepImagePreloads: (manifest: FunnelManifest, currentStepId: string) => StepImagePreload[];
export declare const scheduleNextStepImagePreload: (manifest: FunnelManifest, currentStepId: string) => (() => void);