import EventEmitter from "events";
import { Workflow } from "./workflow.js";
export type WorkflowStatus = "IDLE" | "RUNNING" | "COMPLETED" | "FAILED";
export type WorkflowEvents = {
    workflowCompleted: [];
    workflowException: [Error[]];
};
declare class WorkflowEngine extends EventEmitter<WorkflowEvents> {
    readonly workflow: Workflow;
    status: WorkflowStatus;
    private errors;
    constructor(workflow: Workflow);
    execute(): WorkflowEngine;
    private executeReadyTasks;
    private handleTaskSuccess;
    private handleTaskFailure;
    private updateWorkflowStatus;
    private allTasksSucceeded;
    private allTasksTerminated;
}
export { WorkflowEngine };
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