import type * as acorn from 'acorn';
import type { TransformConfig } from './interfaces';
/**
 * Transform AST by prefixing identifiers based on mode
 *
 * **Blacklist Mode (default):**
 * Transforms only identifiers specified in the list:
 *   console.log('hello');  →  __safe_console.log('hello');
 *   obj['eval']();         →  obj['__safe_eval']();
 *
 * **Whitelist Mode:**
 * Transforms ALL identifiers except those in the whitelist:
 *   const data = users.filter(u => u.active);
 *   →  const __safe_data = __safe_users.filter(__safe_u => __safe_u.active);
 *   (assuming 'users' is whitelisted, but 'data', 'u', 'filter' are not)
 *
 * @param ast The AST to transform (will be mutated in place)
 * @param config Transformation configuration
 */
export declare function transformAst(ast: acorn.Node, config: TransformConfig): void;
/**
 * Generate JavaScript code from an AST
 *
 * @param ast The AST to generate code from
 * @returns Generated JavaScript code
 */
export declare function generateCode(ast: acorn.Node): string;
/**
 * Transform JavaScript code by prefixing identifiers
 *
 * This is a convenience function that combines parsing, transforming, and code generation.
 * For better performance when you already have an AST, use transformAst() directly.
 *
 * @param code JavaScript code to transform
 * @param config Transformation configuration
 * @param ast Optional pre-parsed AST (if not provided, code will be parsed)
 * @returns Transformed JavaScript code
 */
export declare function transformCode(code: string, config: TransformConfig, ast?: acorn.Node): string;