/**
 * SQL Mode 2 — Parser
 *
 * Wraps node-sql-parser. Handles parameter binding (? and $N styles).
 * Splits multi-statement blocks for transactions.
 *
 * PERFORMANCE: node-sql-parser (2.5MB) is lazy-loaded on first parseSql() call.
 * Users who never call db.sql() pay zero import cost.
 */
import type { SqlMode2Dialect } from './types.js';
/**
 * Ensure the parser is loaded. Call once (e.g., from SqlEngine.execute)
 * before any synchronous parseSql() calls.
 */
export declare function ensureParser(): Promise<void>;
/**
 * Bind parameters into the SQL string before parsing.
 * Supports both ? (MySQL) and $N (PostgreSQL) styles.
 * All binding is quote-aware — placeholders inside string literals are ignored.
 */
export declare function bindParams(sql: string, params: unknown[] | undefined, dialect?: SqlMode2Dialect): string;
/**
 * Parse a SQL string into an AST.
 * Lazy-loads node-sql-parser on first call.
 */
export declare function parseSql(sql: string, dialect?: SqlMode2Dialect): unknown;
/**
 * Split a multi-statement SQL block into individual statements.
 * Quote-aware — semicolons inside string literals are preserved.
 */
export declare function splitStatements(sql: string): string[];
/**
 * Check if a SQL string is a transaction block.
 */
export declare function isTransactionBlock(sql: string): boolean;
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