how to destruct a key pair object

Question

I'm trying to destruct a map object with one single [key, value] pair, as example:

var v = { foo: 'bar'};

function f({key, value}) {
   console.log('key is ' + key);
   console.log('value is ' + value);
}

f(v); 

This example should print:

key is foo
value is bar

but it's actually printing:

key is undefined
value is undefined

How can I achieve this? Note: key names can vary.

Answer 1

Not sure you can destructor key / values directly inside the parameters.

But you could do it inside the function..

eg.

const v = { foo: 'bar'};

function f(o) {
   const [key, value] = Object.entries(o)[0];
   console.log('key is ' + key);
   console.log('value is ' + value);
}

f(v);