/**
 * DAG Executor
 *
 * Executes workflow DAGs with proper dependency ordering and parallel execution.
 *
 * @module ai/workflow/executor/dag
 */
import type { WorkflowNode, WorkflowRun } from "../../types.js";
import type { CheckpointOwnership } from "../checkpoint-manager.js";
export type { DAGExecutionResult, DAGExecutorConfig, NodeExecutionResult } from "./types.js";
import type { DAGExecutionResult, DAGExecutorConfig } from "./types.js";
export declare class DAGExecutor {
    private config;
    constructor(config: DAGExecutorConfig);
    execute(nodes: WorkflowNode[], run: WorkflowRun, startFromNode?: string, abortSignal?: AbortSignal, ownership?: CheckpointOwnership): Promise<DAGExecutionResult>;
    private executeUnwrapped;
    private publishNodeStates;
    private executeNode;
    /** Executes a node's type-specific strategy. Always runs inside its `workflow.node` span. */
    private dispatchNode;
    private executeStepNode;
    private executeParallelNode;
    private executeBranchNode;
    private executeWaitNode;
    private executeSubWorkflowNode;
    private checkpoint;
    private executeChildGraph;
}
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