//plik: employee.ts

export class Employee {
    private name: string
    private payment: number

    constructor(name: string, payment: number) {
        this.name = name
        this.payment = payment
    }

    public toString(): string {
        return this.name + ' ' + this.payment
    }
}

//plik: company.ts

import { Employee } from "./employee";

export class Company {

    private employees: Employee[] = []

    public addEmployee(employee: Employee) {
        this.employees.push(employee)
    }

    public toString(): string {
        return this.employees.map(item => item.toString()).join('\n')
    }
}

//plik: app.ts

import { Company } from "./company"
import { Employee } from "./employee"


const company = new Company()

company.addEmployee(new Employee('Kowalski', 5000))
company.addEmployee(new Employee('Nowak', 4500))
company.addEmployee(new Employee('Wisniewska', 4800))
company.addEmployee(new Employee('Baran', 6000))

console.log(company.toString())