What is the right way to return object created inside a function in JS,

Question

I can return object from function in two ways:

Way 1:

function f() {
  const obj = {
    a: 1,
    state: true
  }

  return obj 
}

Way 2:

function f() {
  const obj = {
    a: 1,
    state: true
  }

  return {...obj} 
}

What is the right way to do it from point of view memory consumption? What is the best practice?