/** HyDE generation modes. */
export declare const HYDE_FRAME_GENERATION_VERSION: "frame-v1";
export type HydeGenerationMode = 'legacy' | typeof HYDE_FRAME_GENERATION_VERSION;
/**
 * Resolve the HyDE generation mode from the feature flag.
 * Only the exact literal `true` enables frame-constrained generation.
 */
export declare function getHydeGenerationMode(value?: string | undefined): HydeGenerationMode;