export declare class SemaphoreMessageType {
    static SEMAPHORE_INIT: number;
    static SEMAPHORE_ACQUIRE: number;
    static SEMAPHORE_AVAILABLEPERMITS: number;
    static SEMAPHORE_DRAINPERMITS: number;
    static SEMAPHORE_REDUCEPERMITS: number;
    static SEMAPHORE_RELEASE: number;
    static SEMAPHORE_TRYACQUIRE: number;
}