/**
 * Token types that represent actual identifiers
 */
export declare const IDENTIFIER_TOKENS: Set<string>;
/**
 * Keywords that can be used as identifiers in the grammar.
 *
 * These are tokens that appear as alternatives in the parser's `identifier` rule.
 * When these appear in nextTokenTypes, it means an identifier/column is expected,
 * so we should suggest columns and tables, not these keywords.
 *
 * Derived from IDENTIFIER_KEYWORD_NAMES in tokens.ts — single source of truth.
 */
export declare const IDENTIFIER_KEYWORD_TOKENS: Set<string>;
/**
 * Expression-level operators and keywords (as opposed to clause-level keywords).
 */
export declare const EXPRESSION_OPERATORS: Set<string>;
/**
 * Punctuation tokens — worth suggesting in fallback (e.g., "(" after "VALUES (1), ")
 */
export declare const PUNCTUATION_TOKENS: Set<string>;
/**
 * Token types that should NOT be suggested (internal/structural tokens)
 */
export declare const SKIP_TOKENS: Set<string>;
/**
 * Operator map for converting token names to display strings
 */
export declare const OPERATOR_MAP: Record<string, string>;
/**
 * Convert a token type name to a keyword string for display
 * e.g., "Table" → "TABLE", "DataPageSize" → "DATA_PAGE_SIZE"
 */
export declare function tokenNameToKeyword(name: string): string;
/**
 * Check if a token represents an identifier context
 */
export declare function isIdentifierToken(tokenName: string): boolean;
/**
 * Check if a token should be skipped in suggestions
 */
export declare function shouldSkipToken(tokenName: string): boolean;