/**
 * @fileoverview Chunk Validation (SPEC Section 12.3)
 *
 * Validates chunk array invariants (D-INV-*).
 *
 * Per SPEC Section 11.11 (V-*):
 * - V-1: validateChunks() MUST NOT throw on validation failure
 * - V-2: validateChunks() MUST return {valid: false, error} for invalid input
 * - V-3: assertValidChunks() MAY throw ValidationException
 *
 * @module helpers/validate-chunks
 */
import type { Chunk } from "../core/types/chunk.js";
import type { ValidationResult } from "../core/types/validation.js";
/**
 * Validate chunk array invariants.
 *
 * Per SPEC Section 12.3:
 * Checks: D-INV-0, D-INV-1, D-INV-2, D-INV-2b, D-INV-3
 *
 * MUST NOT throw on validation failure.
 * Returns {valid: false, error} for invalid chunks.
 *
 * @param chunks - Chunk array to validate
 * @param input - Original input text
 * @returns ValidationResult
 */
export declare function validateChunks(chunks: readonly Chunk[], input: string): ValidationResult;
/**
 * Assert chunks are valid.
 *
 * Per SPEC Section 11.11 (V-3):
 * MAY throw ValidationException if validation fails.
 *
 * @param chunks - Chunk array to validate
 * @param input - Original input text
 * @throws ValidationException if validation fails
 */
export declare function assertValidChunks(chunks: readonly Chunk[], input: string): void;
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