Assignment: Using eval()

Your user has entered a new business rule on how to calculate this year's bonuses. He entered a formula through a web form and it is available through the string variable bonusFormula. The formula refers to the employee as employee like in employee.bonus = employee.revenue * 0.2

Provide a function (or lambda expression) named bonusCalculation that calculates an employee's bonus by using the user-provided bonusFormula.

Do NOT use the "Function" class.

const bonusCalculation = employee => eval(bonusFormula);

Your solution will be tested against:

const e = {revenue: 10000, bonus: null};
bonusCalculation(e);
e.bonus === e.revenue * factor_;