JavaScript pattern for multiple constructors

Question

I need different constructors for my instances. What is a common pattern for that?

Answer 1

Answering because this question is returned first in google but the answers are now outdated.

You can use Destructuring objects as constructor parameters in ES6

Here's the pattern:

You can't have multiple constructors, but you can use destructuring and default values to do what you want.

export class myClass {

  constructor({ myArray = [1, 2, 3], myString = 'Hello World' }) {

    // ..
  }
}

And you can do this if you want to support a 'parameterless' constructor.

export class myClass {

      constructor({myArray = [1, 2, 3], myString = 'Hello World'} = {}) {

        // ..
      }
}