Adding google API key with the help of config - node.js

Question

Here using node js ill send request but they give me en error ,add key to the config. I have a key but dont know how to add it?
My code is:
var GoogleMapsAPI = require('googlemaps');
var config = require('config');
var gmAPI = new GoogleMapsAPI();
var params = {
center: '444 W Main St Lock Haven PA',
zoom: 15,
size: '500x400',
maptype: 'roadmap',
markers: [
{
location: '300 W Main St Lock Haven, PA',
label : 'A',
color : 'green',
shadow : true
},
{
location: '444 W Main St Lock Haven, PA',
icon: 'http://chart.apis.google.com/chart?chst=d_map_pin_icon&chld=cafe%7C996600'
}
],
style: [
{
feature: 'road',
element: 'all',
rules: {
hue: '0x00ff00'
}
}
],
path: [
{
color: '0x0000ff',
weight: '5',
points: [
'41.139817,-77.454439',
'41.138621,-77.451596'
]
}
]
};
gmAPI.staticMap(params); // return static map URL
gmAPI.staticMap(params, function(err, binaryImage) {
// fetch asynchronously the binary image
});
and they give me an error:
WARNING: No configurations found in configuration directory:/home/okayg/webstorm_projects/Google_map_API/config
WARNING: To disable this warning set SUPPRESS_NO_CONFIG_WARNING in the environment.
/home/okayg/webstorm_projects/Google_map_API/node_modules/googlemaps/lib/staticMap.js:28
throw error;
^
Error: The staticMap API requires a key. You can add it to the config.
at module.exports [as staticMap] (/home/okayg/webstorm_projects/Google_map_API/node_modules/googlemaps/lib/staticMap.js:40:36)
at Object.<anonymous>
So, how can i add key as they say "using config"?
Thank you.

Answer 1

You can find the answer in the documentation:
https://www.npmjs.com/package/googlemaps
It should be something like:
var publicConfig = {
key: '<YOUR-KEY>',
stagger_time: 1000, // for elevationPath
encode_polylines: false,
secure: true, // use https
proxy: 'http://127.0.0.1:9999' // optional, set a proxy for HTTP requests
};
var gmAPI = new GoogleMapsAPI(publicConfig);
Hope this helps!