import type { PreviewRecovery, TranscriptMetadata } from "./types.js";
export declare function isBlank(value: string | null | undefined): boolean;
export declare function cleanText(value: string): string;
export declare function isSyntheticContextText(value: string | null | undefined): boolean;
export declare function hasUsableDisplayTitle(value: string | null | undefined): boolean;
export declare function hasUsableDisplayPreview(value: string | null | undefined): boolean;
export declare function truncateText(value: string, maxLength: number): string;
export declare function normalizePreview(value: string): string;
export declare function normalizeTitle(value: string): string;
export declare function recoverPreview(firstUserMessage: string | null | undefined, transcript: TranscriptMetadata | null | undefined): PreviewRecovery | null;