import type { FlowDefinition } from "./types.js";
/** Result of validating fields at a producer's consumed-output boundary. */
export interface NodeOutputValidationResult {
    /** Whether the fields may be exposed to downstream consumers. */
    valid: boolean;
    /** Stable, path-bearing failures. Empty when validation is not required. */
    issues: string[];
}
/**
 * Return a producer's declared fields schema only when another node reads it.
 *
 * Consumption is deliberately limited to preconditions, named bindings, and
 * router conditions. Status reads and unreferenced declarations remain prose-only.
 */
export declare function getConsumedOutputSchema(flow: FlowDefinition, producerId: string): Record<string, unknown> | undefined;
/** Validate proposed fields only when a downstream deterministic consumer requires them. */
export declare function validateConsumedNodeOutput(flow: FlowDefinition, producerId: string, fields: Record<string, unknown> | undefined): NodeOutputValidationResult;
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