/**
 * @fileoverview Graph Validation (SPEC Section 12.2)
 *
 * Validates Intent Graph structure invariants (G-INV-*, R-INV-*).
 *
 * Per SPEC Section 11.11 (V-*):
 * - V-1: validateGraph() MUST NOT throw on validation failure
 * - V-2: validateGraph() MUST return {valid: false, error} for invalid input
 * - V-3: assertValidGraph() MAY throw ValidationException
 *
 * @module helpers/validate-graph
 */
import type { IntentGraph } from "../core/types/intent-graph.js";
import type { ValidationResult } from "../core/types/validation.js";
export interface ValidateGraphOptions {
    readonly strictIntentIR?: boolean;
    readonly strictMissingRoles?: boolean;
}
/**
 * Validate Intent Graph structure.
 *
 * Per SPEC Section 12.2:
 * Checks: G-INV-1, G-INV-2, G-INV-3, G-INV-4, R-INV-1, R-INV-2
 *
 * MUST NOT throw on validation failure.
 * Returns {valid: false, error} for invalid graphs.
 *
 * @param graph - The Intent Graph to validate
 * @returns ValidationResult
 */
export declare function validateGraph(graph: IntentGraph, options?: ValidateGraphOptions): ValidationResult;
/**
 * Assert graph is valid.
 *
 * Per SPEC Section 11.11 (V-3):
 * MAY throw ValidationException if validation fails.
 *
 * @param graph - The Intent Graph to validate
 * @throws ValidationException if validation fails
 */
export declare function assertValidGraph(graph: IntentGraph, options?: ValidateGraphOptions): void;
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