/**
 * Parse LangGraph streaming chunks for display
 *
 * LangGraph/DeepAgents streams chunks in various formats:
 * - AIMessage updates with content deltas
 * - Tool calls
 * - Tool results
 * - State updates
 *
 * This parser extracts displayable text for CLI output.
 */
export interface ParsedChunk {
    text?: string;
    messageId?: string;
    isDelta?: boolean;
    toolCall?: {
        id: string;
        name: string;
        args?: any;
    };
    toolResult?: {
        id: string;
        output: any;
        error?: string;
    };
    type: "text" | "tool" | "tool-result" | "state" | "unknown";
    timestamp: number;
}
/**
 * Parse a raw LangGraph stream chunk
 * Returns an array of parsed chunks to handle multiple messages/events in a single chunk
 */
export declare function parseStreamChunk(chunk: any): ParsedChunk[];
/**
 * Format parsed chunk for CLI display
 */
export declare function formatParsedChunk(parsed: ParsedChunk): string | null;
/**
 * Process a stream chunk and return displayable text
 * Returns null if nothing should be displayed
 */
export declare function processStreamChunk(chunk: any): string | null;