App.ts

import { Salesman, SalesLeader, SalesManager, SalesOfficer, SaleHandler } from "./Chain"

export default class ChainExample {

    salesDept: SaleHandler

    constructor(){

        this.salesDept = this.configure()
        this.run()
    }

    configure(): SaleHandler {
        
        let salesman = new Salesman()
        let leader = new SalesLeader()
        let manager = new SalesManager()
        let officer = new SalesOfficer()

        salesman.setNext(leader)
        leader.setNext(manager)
        manager.setNext(officer)

        return salesman
    }

    run(): void {

        this.salesDept.handle(500)
        this.salesDept.handle(5000)
        this.salesDept.handle(20000)
        this.salesDept.handle(500000)
    }
}