export declare class WorkflowNotFoundError extends Error {
    readonly availableWorkflows: string[];
    constructor(workflowName: string, availableWorkflows: string[]);
}
export declare class TaskNotFoundError extends Error {
    constructor(taskName: string, workflowName: string, availableTasks: string[]);
}
export declare class WorkflowInstanceNotAvailableError extends Error {
    constructor(workflowName: string);
}
export declare class InvalidWorkflowNameError extends Error {
    constructor(name: string, reason: string);
}
export declare class InvalidTaskNameError extends Error {
    constructor(name: string, reason: string);
}
export declare class TaskTimeoutError extends Error {
    constructor(taskName: string, timeoutMs: number);
}
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