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import { Evt, UnpackEvt } from "../lib/index.ts";type UnpackPromise<T> = import("../tools/typeSafety/index.ts").UnpackPromise<T>;
import { assert } from "../tools/typeSafety/assert.ts";import { same } from "../tools/inDepth/index.ts";

{
    const evtText = new Evt<string>();    const evtAge = new Evt<number>();
    const pr = Promise.resolve(null);
    type T = UnpackPromise<typeof pr> | UnpackEvt<typeof evtText> | UnpackEvt<typeof evtAge>;
    const arr: [T | undefined, { isFirst: true } | { isFirst: false, data: T }, number][] = [];

    const ctx = Evt.newCtx();
    Evt.useEffect(        (...args) => arr.push(args),        Evt.merge(            ctx,            [                evtText,                evtAge,                Evt.from(pr)            ]        )    );
    (async () => {
        await pr;
        const text = "Hello world";
        evtText.post(text);
        const age = 99;
        evtAge.post(age);
        ctx.done();
        evtAge.post(4444);
        assert(same(            arr,            [                [undefined, { "isFirst": true }, 0],                [null, { "isFirst": false, "data": null }, 1],                [text, { "isFirst": false, "data": text }, 2],                [age, { "isFirst": false, "data": age }, 3]            ]        ));
    })();
}
{
    const evtText = new Evt<string>();    const evtAge = new Evt<number>();
    const pr = Promise.resolve(null);
    type T = UnpackPromise<typeof pr> | UnpackEvt<typeof evtText> | UnpackEvt<typeof evtAge>;
    const arr: [T, { isFirst: true } | { isFirst: false, data: T }, number][] = [];

    const ctx = Evt.newCtx();
    const initData = "foo bar";
    Evt.useEffect(        (...args) => arr.push(args),        Evt.merge(            ctx,            [                evtText,                evtAge,                Evt.from(pr)            ]        ),        [initData]    );
    (async () => {
        await pr;
        const text = "Hello world";
        evtText.post(text);
        const age = 99;
        evtAge.post(age);
        ctx.done();
        evtAge.post(4444);
        assert(same(            arr,            [                [initData, { "isFirst": true }, 0],                [null, { "isFirst": false, "data": null }, 1],                [text, { "isFirst": false, "data": text }, 2],                [age, { "isFirst": false, "data": age }, 3]            ]        ));
    })();
}
setTimeout(() => console.log("PASS"), 0);