123456789101112131415161718192021222324252627282930

import { Evt } from "../lib/index.ts";
let evt = new Evt<number | string>();
evt.enableTrace({    "id": "myEvent",     "formatter": n => n.toString(),     "log": str => console.assert(str === "(myEvent) 1 handler, 666" )});
evt.postAsyncOnceHandled(666);
evt.attachOnce(    evtData => typeof evtData === "string",    ()=> { throw new Error(); });
evt.attachOnce(    evtData=> {
        console.assert(evtData === 666);
        console.log("PASS");
    });