/**
 * Extended language provider interface for engine integration
 *
 * The base LanguageProvider interface (from if-domain) defines text and pattern
 * retrieval. This interface extends it with optional methods the engine can use
 * when available, following the same type-guard pattern as parser-interface.ts.
 */
import type { LanguageProvider } from '@sharpee/if-domain';
import type { NarrativeSettings } from './narrative';
/**
 * Extended language provider interface for engine integration.
 *
 * Language providers can optionally implement these methods to enable
 * perspective-aware narrative (setNarrativeSettings).
 */
export interface IEngineAwareLanguageProvider extends LanguageProvider {
    /**
     * Configure narrative perspective settings.
     * Called when the player entity changes or on game start.
     *
     * @param settings Narrative context including perspective and pronouns
     */
    setNarrativeSettings?(settings: NarrativeSettings): void;
}
/**
 * Type guard for language provider with narrative settings support.
 */
export declare function hasNarrativeSettings(provider: LanguageProvider): provider is IEngineAwareLanguageProvider & {
    setNarrativeSettings: NonNullable<IEngineAwareLanguageProvider['setNarrativeSettings']>;
};
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