import type { $ZodType } from 'zod/v4/core';
import type { NativeRules } from '../types.js';
/**
 * Extract native RHF rules from a Zod schema's constraint bag.
 *
 * Uses _zod.bag exclusively (Constitution Principle I) — the same substrate
 * API as the existing processors (string.ts, number.ts).
 *
 * Returns NativeRules if all constraints can be mapped to native rules,
 * or null if the schema has effects (refine/transform) that prevent
 * native conversion (strict equivalence — FR-017).
 */
export declare function extractNativeRules(schema: $ZodType): NativeRules | null;
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