call value objects from other files into an object value

Question

i have message object that contain :

const message = {
        headers: {
            i need to call another object to here
        }
};

and i have config object in another file :

exports.custom_headers{

    'x-my-key': 'header value',
    'x-another-key': 'another value'

}

i need to replace whole name and value of headers: with the object from config file

how to reference that ? I tried calling objects directly but it didn't work

normaly the object work like this

const message = {
    from: random_message.fromname+'<'+random_message.fromemail+'>',
    to: email,
    subject: random_message.subject,
    text: random_message.text,
    html: random_message.html,
    headers: {
            'x-my-key': 'header value',
            'x-another-key': 'another value'
    }
};

but i need to export headers to another file

Answer 1

If this is what you want. You can use ... (spread operator) to spread the keys of the object.

const custom_headers =  {
    'x-my-key': 'header value',
    'x-another-key': 'another value'
};

const message = {
   from: 'random_message.fromname'+'<'+'random_message.fromemail'+'>',
   to: 'email',
   subject: 'random_message.subject',
   text: 'random_message.text',
   html: 'random_message.html',
  headers:{
    ...custom_headers
  }
};

console.log(message);