/**
 * JSON Schema to GBNF Grammar Converter
 *
 * This is a TypeScript port of llama.cpp's json-schema-to-grammar.mjs
 * which was originally ported from json_schema_to_grammar.py
 *
 * Converts JSON Schema to GBNF (GGML BNF) grammar for constraining LLM outputs.
 */
import type { JSONSchema7 } from "@ai-sdk/provider";
export interface SchemaConverterOptions {
    /** Property order for object properties */
    propOrder?: Record<string, number>;
    /** Whether to allow fetching remote schemas (not supported in this port) */
    allowFetch?: boolean;
    /** Whether dot in regex patterns matches newlines */
    dotall?: boolean;
}
/**
 * SchemaConverter converts JSON Schema to GBNF grammar
 */
export declare class SchemaConverter {
    private _propOrder;
    private _dotall;
    private _rules;
    private _refs;
    private _refsBeingResolved;
    constructor(options?: SchemaConverterOptions);
    private _formatLiteral;
    private _addRule;
    /**
     * Resolve $ref references in the schema
     */
    resolveRefs(schema: JSONSchema7, url?: string): void;
    private _generateUnionRule;
    private _visitPattern;
    private _notStrings;
    private _resolveRef;
    private _generateConstantRule;
    visit(schema: JSONSchema7, name?: string): string;
    private _addPrimitive;
    private _buildObjectRule;
    /**
     * Format the grammar rules as a GBNF grammar string
     */
    formatGrammar(): string;
}
/**
 * Convert a JSON Schema to a GBNF grammar string
 */
export declare function convertJsonSchemaToGrammar(schema: JSONSchema7, options?: SchemaConverterOptions): string;
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