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

For future readers, the problem could also be if the constructor expects parameters and you are giving no parameters or a different number of parameters. This is because for Javascript a function with a different number of parameters is a different function.

A simple solution could be to add default parameters in the constructor.

My example was like this:

SegmentsQueryBuilder.ts

class SegmentsQueryBuilder {
  //...
  constructor(scoping) {
    //...
  }
//...
}

segments.query.builder.test.ts

describe('Segment base query', () => {
  test('should create segment select with default fields', () => {
    const segmentQueryBuilder = new SegmentQueryBuilder() //ERROR HERE
//...

The solution here was either to use default parameter in the constructor or to pass the scoping object in the usage of the constructor