/**
 * Token Types for MEL Lexer
 * Based on MEL SPEC v0.3.3 Section 3
 */
import type { SourceLocation } from "./source-location.js";
/**
 * All token kinds in MEL
 */
export type TokenKind = "DOMAIN" | "STATE" | "COMPUTED" | "ACTION" | "EFFECT" | "WHEN" | "ONCE" | "PATCH" | "UNSET" | "MERGE" | "TRUE" | "FALSE" | "NULL" | "AS" | "AVAILABLE" | "DISPATCHABLE" | "FAIL" | "STOP" | "WITH" | "TYPE" | "IMPORT" | "FROM" | "EXPORT" | "PLUS" | "MINUS" | "STAR" | "SLASH" | "PERCENT" | "EQ_EQ" | "BANG_EQ" | "LT" | "LT_EQ" | "GT" | "GT_EQ" | "AMP_AMP" | "PIPE_PIPE" | "BANG" | "QUESTION_QUESTION" | "QUESTION" | "COLON" | "EQ" | "AT" | "LPAREN" | "RPAREN" | "LBRACE" | "RBRACE" | "LBRACKET" | "RBRACKET" | "COMMA" | "SEMICOLON" | "DOT" | "ELLIPSIS" | "PIPE" | "NUMBER" | "STRING" | "IDENTIFIER" | "SYSTEM_IDENT" | "ITEM" | "EOF" | "ERROR";
/**
 * A token produced by the lexer
 */
export interface Token {
    kind: TokenKind;
    /** The raw text of the token */
    lexeme: string;
    /** Parsed value for literals */
    value?: unknown;
    /** Location in source */
    location: SourceLocation;
}
/**
 * Keywords lookup table
 */
export declare const KEYWORDS: Record<string, TokenKind>;
/**
 * Reserved keywords (JS keywords that are forbidden in MEL)
 */
export declare const RESERVED_KEYWORDS: Set<string>;
/**
 * Check if a token is a keyword
 */
export declare function isKeyword(lexeme: string): boolean;
/**
 * Check if a token is a reserved word
 */
export declare function isReserved(lexeme: string): boolean;
/**
 * Get keyword token kind, or undefined if not a keyword
 * Note: Uses Object.hasOwn to avoid prototype pollution (e.g., "toString")
 */
export declare function getKeywordKind(lexeme: string): TokenKind | undefined;
/**
 * Create a token
 */
export declare function createToken(kind: TokenKind, lexeme: string, location: SourceLocation, value?: unknown): Token;