03.People - Fixed

function people() {

    class Employee {
        constructor(name, age) {
            if (new.target === Employee) {
                throw new Error("Cannot instatiate directly.");
            }
            this.name = name;
            this.age = age;
            this.salary = 0;
            this.tasks = [];
        }

        work() {
            let task = this.tasks.shift();

            console.log(`${this.name}${task}`);
            this.tasks.push(task);
        }

        collectSalary() {

            console.log(`${this.name} received ${this.getSalary()} this month.`);
        }

        getSalary() {
            return this.salary;
        }
    }

    class Junior extends Employee {
        constructor(name, age) {
            super(name, age);
            this.tasks.push(" is working on a simple task.");
        }
    }

    class Senior extends Employee {
        constructor(name, age) {
            super(name, age);
            this.tasks.push(" is working on a complicated task.");
            this.tasks.push(" is taking time off work.");
            this.tasks.push(" is supervising junior workers.");
        }
    }

    class Manager extends Employee {
        constructor(name, age) {
            super(name, age);
            this.tasks.push(" scheduled a meeting.");
            this.tasks.push(" is preparing a quarterly report.");
            this.dividend = 0;

        }

        getSalary() {
            return this.salary + this.dividend;
        }
    }

    return { Employee, Junior, Senior, Manager };
}