/**
 * PHP class modifier flag for `abstract`.
 *
 * @category PHP AST
 */
export declare const PHP_CLASS_MODIFIER_ABSTRACT = 16;
/**
 * PHP class modifier flag for `final`.
 *
 * @category PHP AST
 */
export declare const PHP_CLASS_MODIFIER_FINAL = 32;
/**
 * PHP method modifier flag for `public`.
 *
 * @category PHP AST
 */
export declare const PHP_METHOD_MODIFIER_PUBLIC = 1;
/**
 * PHP method modifier flag for `protected`.
 *
 * @category PHP AST
 */
export declare const PHP_METHOD_MODIFIER_PROTECTED = 2;
/**
 * PHP method modifier flag for `private`.
 *
 * @category PHP AST
 */
export declare const PHP_METHOD_MODIFIER_PRIVATE = 4;
/**
 * PHP method modifier flag for `static`.
 *
 * @category PHP AST
 */
export declare const PHP_METHOD_MODIFIER_STATIC = 8;
/**
 * PHP method modifier flag for `abstract`.
 *
 * @category PHP AST
 */
export declare const PHP_METHOD_MODIFIER_ABSTRACT = 16;
/**
 * PHP method modifier flag for `final`.
 *
 * @category PHP AST
 */
export declare const PHP_METHOD_MODIFIER_FINAL = 32;
/**
 * Formats PHP class modifiers into an array of keywords.
 *
 * @category PHP AST
 * @param    flags - The bitmask of class modifier flags.
 * @returns An array of string keywords (e.g., ['abstract', 'final']).
 */
export declare function formatClassModifiers(flags: number): string[];