import type { LintError } from '../lint.types.js';
/**
 * @purpose Detects #region START / #endregion END at class body level.
 *         Regions are allowed only inside method bodies (brace depth >= 2 inside a class)
 *         and at top-level (no enclosing class). Regions at class body level (between
 *         member declarations) are forbidden.
 * @param content Source text to validate.
 * @param filePath File path for error messages.
 * @returns List of lint errors, empty when all regions are correctly placed.
 */
export declare function check(content: string, filePath: string): LintError[];