export declare const MAX_GRAMMAR_BYTES: number;
export declare function utf8ByteLength(value: string): number;
export declare function gbnfStringLiteral(source: string): string;
export declare function literalAlternation(values: readonly string[]): string;
export declare function compileBracketCueGrammar(options: {
    cueRuleName: string;
    labelRuleName: string;
    labels: readonly string[];
}): string;
export declare function compileBracketProseGrammar(): string;
export declare function assertGrammarByteSize(grammar: string | undefined, options?: {
    readonly label?: string;
    readonly maxBytes?: number;
    readonly createError?: (message: string) => Error;
}): void;