import { AttributeDict } from "./tool/AttributeDict.js";
/**
 * Various constant value that were scattered all over the place. Collect them here to minimize circular dependencies.
 */
export declare class Constants {
    static readonly GrammarExtension = ".g4";
    static readonly LegacyGrammarExtension = ".g";
    static readonly AllGrammarExtensions: string[];
    static readonly DefaultNodeName = "DEFAULT_MODE";
    static readonly PrecedenceOptionName = "p";
    static readonly TokenIndexOptionName = "tokenIndex";
    static readonly VocabFileExtension = ".tokens";
    static readonly GrammarFromStringName = "<string>";
    static readonly EorTokenType = 1;
    static readonly Down = 2;
    static readonly Up = 3;
    /**
     * Rule refs have a predefined set of attributes as well as the return values and args.
     *
     * These must be consistent with ActionTranslator.rulePropToModelMap, ...
     */
    static readonly predefinedRulePropertiesDict: AttributeDict;
    /**
     * All {@link Token} scopes (token labels) share the same fixed scope of of predefined attributes. I keep this
     * out of the {@link Token} interface to avoid a runtime type leakage.
     */
    static readonly predefinedTokenDict: AttributeDict;
    /**
     * Provides a map of names of predefined constants which are likely to appear as the argument for lexer commands.
     * These names are required during code generation for creating {@link LexerAction} instances that are usable
     * by a lexer interpreter.
     */
    static readonly COMMON_CONSTANTS: Map<string, number>;
}