Why Does This Typescript Output “[Class] is not a constructor.”?

Question

I\'m working in typescript 1.5 in visual studio. I have a main class called app.ts, and another called FizzBuzzManager.ts. I can\'t figure out what is wrong with this code,

Answer 1

When migrating from plain ES6 / Node.js using module.exports/require() it often happens to me that I forget to remove the old module.exports = which also causes this error.