Evt.create(initalState?)

Static method to instanciate an Evt or a StatefulEvt.

Evt.create() is the prefered method for instantiating an Evt as this single method allow to instantiate Evt, StatefulEvt and VoidEvt.

The constructors are still useful however to avoid repeating the type of variable that are already typed e.g: const evt: Evt<string | number> = new Evt()

Usage

import { Evt, VoidEvt, StatefulEvt } from "evt";

Evt.create<string>()     ⇔     new Evt<string>()
Evt.create()             ⇔     /* An object that implement VoidEvt */
Evt.create(false)        ⇔     new StatefulEvt<boolean>(false)

Why VoidEvt and not Evt<void> ?

When you instantiate an Evt with a void argument ( new Evt<void>() ), TypeScript forces you to pass undefined to the post method ( it does not allows to call evt.post() ). VoidEvt ( and respectively VoidCtx ) is a workaround for this annoyance.

VoidEvt object are instances of Evt<void> that you can post without passing argument.

import { Evt } from "evt";

const evtSocketConnect = Evt.create();

evtSocketConnect.attach(() => console.log("SOCKET CONNECTED"));

evtSocketConnect.post();
//"SOCKET CONNECTED" have been printed on the console.