import type { $ZodIssue } from 'zod/v4/core';
export declare class WorkflowError extends Error {
    constructor(message: string);
}
export declare class StepInputValidationError extends WorkflowError {
    readonly stepName: string;
    readonly issues: readonly $ZodIssue[];
    constructor(stepName: string, issues: readonly $ZodIssue[]);
}
export declare class UnknownStepError extends WorkflowError {
    readonly stepName: string;
    constructor(stepName: string);
}
export declare class DisallowedTransitionError extends WorkflowError {
    readonly stepName: string;
    readonly directiveKind: string;
    readonly target?: string;
    constructor(stepName: string, directiveKind: string, target?: string);
}