export declare const workflowExpressionEvaluationErrorCode = "workflow-expression-evaluation-failed";
export type WorkflowExpressionEvaluationFailureReason = 'missing-path' | 'evaluation-error';
export type WorkflowExpressionEvaluationDetail = {
    kind: 'missing-path';
    path?: string | undefined;
} | {
    kind: 'index-out-of-bounds';
    index: number;
    size?: number | undefined;
} | {
    kind: 'evaluation-error';
    classification?: string | undefined;
};
export declare class WorkflowExpressionEvaluationError extends Error {
    readonly code = "workflow-expression-evaluation-failed";
    readonly reason: WorkflowExpressionEvaluationFailureReason;
    /** A bounded diagnostic with runtime values removed before persistence. */
    readonly summary: string;
    /** Structured, bounded diagnostic fields safe to persist and render. */
    readonly detail: WorkflowExpressionEvaluationDetail;
    constructor(cause: unknown);
}
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