how to handle: Assigned expression type number | undefined is not assignable to type number

Question

I have this class:

  id: number;
  name: string;
  description: string;
  productsSet: Set<Products>;

constructor(
id?: number,
name?: string,
description?: string,
productsSet?: Set<Products>
  )    {
   this.id = id;
    this.name = name;
     this.description = description;
    this.productsSet = productsSet;
    }

I've read about 3 different solutions to this problem, i can either allow undefined, use the null operator or set a default value, but what is the best practice in this case?

Answer 1

the best approach i found is to just give default values to the parameters:

 constructor(
  id: number = 0,
  name: string = '',
  description: string = '',
  productsSet: Set<Products> = new Set()
 ) {
  this.id = id;
  this.name = name;
  this.description = description;
  this.productsSet = productsSet;
 }