import { SeededRandom } from '../utils/random';
export interface Fragment {
    text: string;
    type: 'opening' | 'middle' | 'closing' | 'standalone';
    requiresSubject?: boolean;
    requiresObject?: boolean;
    eventTypes?: string[];
}
export interface FragmentLibrary {
    [eventType: string]: {
        openings: Fragment[];
        middles: Fragment[];
        closings: Fragment[];
        standalones: Fragment[];
    };
}
export declare class DescriptionFragmentLibrary {
    private library;
    private rng;
    constructor(rng?: SeededRandom);
    /**
     * Initialize the fragment library with pre-written fragments
     */
    private initializeLibrary;
    /**
     * Get a random fragment of a specific type for an event type
     */
    getFragment(eventType: string, fragmentType: 'opening' | 'middle' | 'closing' | 'standalone'): Fragment | null;
    /**
     * Combine fragments into a complete description
     */
    combineFragments(subject: string, adjective: string, eventType: string, options?: {
        useOpening?: boolean;
        useMiddle?: boolean;
        useClosing?: boolean;
    }): string;
    /**
     * Get article for a word
     */
    private getArticle;
    /**
     * Add custom fragments
     */
    addFragments(eventType: string, fragments: {
        openings?: Fragment[];
        middles?: Fragment[];
        closings?: Fragment[];
        standalones?: Fragment[];
    }): void;
}
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