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import { Evt } from "../lib/index.ts";import { assert } from "https://deno.land/x/tsafe@v1.6.6/assert.ts";
const evtAge = new Evt<number>();

let p_: number;
evtAge.$attach(    [(...[, prev]) => [prev + 1], 0],    Evt.newCtx(),    p => p_ = p);
evtAge.post(1);evtAge.post(1);evtAge.post(1);

assert(p_! === 3);
console.log("PASS");