Using the node.js google maps client library

I think this has to do with my limited experience with javascript. I am using the node.js client library by Google , found here - https://github.com/googlemaps/google-maps-services-js The example shows how to create a client object

var googleMapsClient = require('@google/maps').createClient({
  key: 'your API key here'
});  

And then how to run a gecode request and print out the results :

// Geocode an address.
googleMapsClient.geocode({
  address: '1600 Amphitheatre Parkway, Mountain View, CA'
}, function(err, response) {
  if (!err) {
    console.log(response.json.results);
  }
}); 

What I need to do is read a list of addresses from a file and build an array of objects for all of them .

I want my code to do something along the lines of :

create address-objects array 
create a client object 
open the text files 
for each line in text files
 geocode the line(address)
 add the address and the results into an object and add it to the  address-objects

I don't understand whether the googleMapsClient.geocode returns something , if yes how do I access it ? should I set it to some variable along the lines of :

var gc_results = googleMapsClient.geocode(param , ...)

Hope I was clear , thanks in advance Jonathan.

You can access the response inside the callback function.

So, if you want to have this function to be called for each address, you can first define an empty array:

var gc_results = [];

Then you shall call the function for each address you get out of the file, something similar to this:

addresses.forEach(function(){
   googleMapsClient.geocode({
      address: 
    }, function(err, res) {
      gc_results.push(res.json.results);
  })
})

after this, you will have the gc_results array full with the information you need