/**
 * Workflow executor - runs workflows and tracks data flow.
 */
import type { MCPClient } from '../transport/mcp-client.js';
import type { MCPTool } from '../transport/types.js';
import type { LLMClient } from '../llm/client.js';
import type { Workflow, WorkflowResult, WorkflowExecutorOptions } from './types.js';
/**
 * Executes workflows against an MCP server.
 */
export declare class WorkflowExecutor {
    private client;
    private llm;
    private tools;
    private options;
    private stepResults;
    private onProgress?;
    private logger;
    private stateTracker?;
    private timeouts;
    constructor(client: MCPClient, llm: LLMClient | null, tools: MCPTool[], options?: WorkflowExecutorOptions);
    /**
     * Emit progress event if callback is registered.
     */
    private emitProgress;
    /**
     * Execute a workflow.
     *
     * @param workflow - The workflow to execute
     * @throws AbortError if the operation is aborted via signal
     */
    execute(workflow: Workflow): Promise<WorkflowResult>;
    /**
     * Execute a single workflow step.
     */
    private executeStep;
    /**
     * Resolve arguments for a step, applying mappings from previous step outputs.
     */
    private resolveArguments;
    /**
     * Resolve a JSONPath-like expression against previous step results.
     * Supports: $steps[n].result.path.to.value
     */
    private resolvePath;
    /**
     * Navigate a dot-separated path in an object.
     */
    private navigatePath;
    /**
     * Run assertions against a step response.
     */
    private runAssertions;
    /**
     * Run a single assertion.
     */
    private runAssertion;
    /**
     * Extract error message from a tool response.
     */
    private extractErrorMessage;
    /**
     * Get indices of dependency steps that have failed.
     * Dependencies are steps referenced in argMapping.
     */
    private getFailedDependencies;
    /**
     * Build a data flow graph showing how data moves between steps.
     */
    private buildDataFlowGraph;
    /**
     * Generate LLM analysis for a step.
     * Returns a fallback message if LLM is not available (check mode).
     */
    private analyzeStep;
    /**
     * Generate a summary of the workflow execution.
     * Returns a fallback message if LLM is not available (check mode).
     */
    private generateWorkflowSummary;
}
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