import type { IGrammar } from "../types.js";
export declare class TokenVocabParser {
    private outputDirectory;
    private libDirectory?;
    protected readonly g: IGrammar;
    constructor(g: IGrammar, outputDirectory: string, libDirectory?: string | undefined);
    /**
     * Loads a vocab file `<vocabName>.tokens` and return mapping.
     *
     * @returns A map of token names to token types.
     */
    load(): Map<string, number>;
    /**
     * Return the content of the vocab file. Look in library or in -o output path.  antlr -o foo T.g4 U.g4 where U
     * needs T.tokens won't work unless we look in foo too. If we do not find the file in the lib directory then must
     * assume that the .tokens file is going to be generated as part of this build and we have defined .tokens files
     * so that they ALWAYS are generated in the base output directory, which means the current directory for the
     * command line tool if there was no output directory specified.
     *
     * @returns The content of the vocab file.
     */
    getImportedVocabFile(): string;
}