/**
 * Sanitizes session ID to prevent shell injection attacks
 * Only allows alphanumeric characters, underscores, and hyphens
 */
export declare function sanitizeSessionId({ sessionId }: {
    sessionId: string;
}): string;
/**
 * Safely finds a session JSONL file using filesystem APIs instead of shell commands
 * Sanitizes input to prevent injection attacks
 */
export declare function findSessionJsonl({ sessionId }: {
    sessionId: string;
}): Promise<string | undefined>;
export interface JsonlMessage {
    id: string;
    timestamp: number;
    usage?: {
        input_tokens?: number;
        output_tokens?: number;
        cache_creation_input_tokens?: number;
        cache_read_input_tokens?: number;
        cache_creation?: {
            ephemeral_5m_input_tokens?: number;
            ephemeral_1h_input_tokens?: number;
        };
    };
    content?: any;
    isSidechain?: boolean;
}
export interface TranscriptMessage {
    type?: string;
    usage?: JsonlMessage['usage'];
    message?: {
        usage?: JsonlMessage['usage'];
        id?: string;
    };
    id?: string;
    uuid?: string;
    timestamp?: string;
    isSidechain?: boolean;
}
export declare class JsonlReader {
    /**
     * Reads all messages from JSONL file synchronously (for smaller files)
     */
    static parseJsonl(filePath: string): JsonlMessage[];
    /**
     * Streams through JSONL file and processes each message (for larger files)
     */
    static streamMessages<T>(filePath: string, processor: (msg: TranscriptMessage, lineNumber: number) => T | null): Promise<T[]>;
    /**
     * Reads the last message from JSONL file that matches criteria
     */
    static readLastMessage(filePath: string, filter?: (msg: TranscriptMessage) => boolean): Promise<TranscriptMessage | null>;
    /**
     * Helper to parse a single JSONL line consistently
     */
    private static parseJsonlLine;
}
export declare function parseJsonl(filePath: string): JsonlMessage[];
export declare function findJsonlPath(sessionId: string): string | null;
/**
 * Securely scan Claude projects directory for JSONL files
 * Returns file information with sanitized paths
 */
export interface JsonlFileInfo {
    sessionId: string;
    projectDir: string;
    filePath: string;
    lastModified: Date;
}
export declare function scanClaudeProjects(): JsonlFileInfo[];
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