Semantics of Asynchronous JavaScript

TheNode.jsruntimehasbecomeamajorplatformforde-velopersbuildingcloud,mobile,orIoTapplicationsusingJavaScript.SincetheJavaScriptlanguageissinglethreaded,Node.jsprogramsmustmakeuseofasynchronouscallbacksandeventloopsmanagedbytheruntimetoensureappli-cationsremainresponsive.Whileconceptuall