/**
 * Check if flags are aligned in any direction (horizontal, vertical, or diagonal)
 * @param matrix Two-dimensional array of cells containing flags
 * @returns True if flags are aligned in any direction, false otherwise
 * @example checkFlagAlignment([
 *  [{ value: 1, flag: true }, { value: 2, flag: false }, { value: 3, flag: true }],
 *  [{ value: 4, flag: false }, { value: 5, flag: true }, { value: 6, flag: false }],
 *  [{ value: 7, flag: false }, { value: 8, flag: true }, { value: 9, flag: true }],
 * ]); // true
 */
export declare const checkFlagAlignment: <T extends {
    flag: boolean;
}>(matrix: T[][]) => boolean;