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//NOTE: This test do not perform any actual check at runtime.
import { Evt } from "../lib/index.ts";import { getHandlerPr } from "./getHandlerPr.ts";
type Circle = {    type: "CIRCLE";    radius: number;};
type Square = {    type: "SQUARE";    sideLength: number;};
type Shape = Circle | Square;
const matchCircle = (shape: Shape): shape is Circle =>    shape.type === "CIRCLE";
const id = <T>(x: T) => x;
type Resolve<T> = (value: T) => void;
export class Deferred<T> {
    public readonly pr: Promise<T>;
    /** NOTE: Does not need to be called bound to instance*/    public readonly resolve: Resolve<T>;
    constructor() {
        let resolve!: Resolve<T>;
        this.pr = new Promise<T>(            resolve_ => resolve = value => {
                this._hasResolved = true;
                resolve_(value);
            }        );
        this.resolve = resolve;
    }
    public _hasResolved = false;

}
{
    const methodName = "$attach";
    const evtShape = new Evt<Shape>();
    const dCircle = new Deferred<Circle>();    const prCircle = evtShape[methodName](        shape => matchCircle(shape) ? [shape] : null,        circle => dCircle.resolve(circle)    );
    const dRadius = new Deferred<number>();    const prRadius = evtShape[methodName](        shape => shape.type === "CIRCLE" ? [shape.radius] : null,        radius => dRadius.resolve(radius)    );
    const dBigCircle = new Deferred<Circle>();    const prBigCircle = evtShape[methodName](        shape => shape.type === "CIRCLE" && shape.radius > 100 ? [shape] : null,        bigCircle => dBigCircle.resolve(bigCircle)    );
    const dBigShape = new Deferred<Shape>();    const prBigShape = evtShape[methodName](        shape => {            switch (shape.type) {                //NOTE: We have to give a hint to typescript on what we will return.                case "SQUARE": return (shape.sideLength > 100) ? [id<Shape>(shape)] : null;                case "CIRCLE": return (shape.radius > 100) ? [shape] : null;            }        },        shape => dBigShape.resolve(shape)    );

    prCircle; prRadius; prBigCircle; prBigShape;
}
{
    const methodName = "attach";
    const evtShape = new Evt<Shape>();
    const dCircle = new Deferred<Circle>();    const prCircle = evtShape[methodName](        matchCircle,        circle => dCircle.resolve(circle)    );
    const dRadius = new Deferred<number>();    const prRadius = getHandlerPr(        evtShape,        () => evtShape[methodName](            matchCircle,            circle => dRadius.resolve(circle.radius)        )).then(({ radius }) => radius);
    const dBigCircle = new Deferred<Circle>();    const prBigCircle = getHandlerPr(        evtShape,        () => evtShape[methodName](            shape => shape.type === "CIRCLE" && shape.radius > 100,            bigCircle => {                //Here big circle is a shape with ts 3.3.4 but it is not usable.                dBigCircle.resolve(bigCircle as Circle);            }        )).then(bigCircle => id<Shape>(bigCircle) as Circle);
    const dBigShape = new Deferred<Shape>();    const prBigShape = evtShape[methodName](        shape => {            switch (shape.type) {                case "SQUARE": return (shape.sideLength > 100);                case "CIRCLE": return (shape.radius > 100);            }        },        bigShape => {            //Here big shape is a shape with ts 3.3.4 but it is not usable.            dBigShape.resolve(bigShape as Shape)        }    );
    prCircle; prRadius; prBigCircle; prBigShape;
}
console.log("PASS");