Object destructuring with Short-Circuit Evaluation

Question

Is it possible to do achieve something like this?

const obj1 = { name: 'tom' }
const obj2 = { age: 20 }

let { name, age } = obj1 || obj2

Getting as a result -> name = 'tom' and age=20

The code above doesn't work, as it evaluates the condition one time and not on each variable assignment, which of course makes sense. It evaluates to name='tom', age=undefined

Is there any way to make that logic work?

Thanks!

Answer 1

You can merge the objects and then try to destructure like:

 const obj1 = { name: 'tom' } const obj2 = { age: 20 } let { name, age } = {...obj1, ...obj2}; console.log( name, age )

Answer 2

You can do this by

  let { name, age } = Object.assign({}, obj1, obj2)

This first create an object that has all the attributes of obj1 and the attributes of obj2.

Note this does not deeply copy attributes.