Constructing an object without passing at least empty curly brackets produces "(destructured pa-CodePudding

I'm trying to write a class with optional named arguments.

class MyClass {
      constructor({a=2, b=4, c=3}){
          console.log(b);
      }
    }

If I create the object like this

let obj = new MyClass({});

then all is good.

However, if I create the object like this

let obj = new MyClass();

I get an error. Is it possible to make it accept empty parentheses?

CodePudding user response：

Have the whole argument also default to the empty object (in addition to the destructured properties defaulting to particular values).

class MyClass {
  constructor({ a=2, b=4, c=3 } = {}){
      console.log(b);
  }
}
let obj = new MyClass();