let globalNotificationProgressCallBack : (() => void) | null = () => { } let globalNotificationProgressFinishCallBack : (() => void) | null = () => { } export function setGlobalNotificationProgressCallBack(callBack : (() => void) | null) : void { globalNotificationProgressCallBack = callBack } export function getGlobalNotificationProgressCallBack() : (() => void) | null { return globalNotificationProgressCallBack } export function setGlobalNotificationProgressFinishCallBack(callBack : (() => void) | null) : void { globalNotificationProgressFinishCallBack = callBack } export function getGlobalNotificationProgressFinishCallBack() : (() => void) | null { return globalNotificationProgressFinishCallBack }