@anyhowstep/ts-route-server/src/Route.ts

import {Definition} from "@anyhowstep/ts-route-shared";
import {Handler, VoidHandler} from "./Handler";
import {HandlerMiddleware} from "./HandlerMiddleware";

export type HandlerArray<P, B, Q, D, M> = (Handler<P, B, Q, D, M, any, any>|VoidHandler<P, B, Q, D, M, any>)[];

export class Route<P, B, Q, D, M, L={_dummy:undefined}> {
    private definition : Definition<P, B, Q, D, M>;
    private handlerArr : HandlerArray<P, B, Q, D, M>;

    public constructor (
        definition : Definition<P, B, Q, D, M>,
        handlerArr : HandlerArray<P, B, Q, D, M> = []
    ) {
        this.definition = definition;
        this.handlerArr = handlerArr;
    }
    public add<N extends {}> (handler : Handler<P, B, Q, D, M, L, N>) : Route<P, B, Q, D, M, L & N> {
        const newHandlerArr = this.handlerArr.slice();
        newHandlerArr.push(HandlerMiddleware.Create(handler));

        return new Route(this.definition, newHandlerArr);
    }
    public addVoid (handler : VoidHandler<P, B, Q, D, M, L>) : Route<P, B, Q, D, M, L> {
        const newHandlerArr = this.handlerArr.slice();
        newHandlerArr.push(handler);

        return new Route(this.definition, newHandlerArr);
    }

    public getDefinition () {
        return this.definition;
    }
    public getHandlerArr () {
        return this.handlerArr;
    }
}