type ObserverConstructor<T extends object> = abstract new (...args: any[]) => T;
/**
 * Get message handler names from an observer instance.
 * Assumes private method names start with underscore (`_`).
 */
export declare function getMessageHandlerNames<T extends object>(observerInstance: T): Extract<keyof T, string>[];
/**
 * Get message handler names from an observer class constructor.
 * Assumes private method names start with underscore (`_`).
 */
export declare function getMessageHandlerNames<T extends object>(observerClass: ObserverConstructor<T>): Extract<keyof T, string>[];
export {};