import type { StoryState, Chapter } from "../../core/types/story";
export type StoryWithDefaults = StoryState & {
    chapters: Array<Chapter & {
        transitionTimeMs: number;
    }>;
};
export declare const normaliseStoryInput: (input: unknown) => {
    ok: boolean;
    story?: StoryWithDefaults;
    error?: string;
};
export declare const validateStoryViewer: (story: StoryWithDefaults) => {
    ok: boolean;
    errors: string[];
};