const coordinates = require('capitals-coordinates').rawData;

coordinates is array of GeoJSON objects sorted by country name in English. Example GeoJSON object:

{
     "type": "Feature",
     "geometry": {
      "type": "Point",
      "coordinates": [
       31.05,
       -17.83
      ]
     },
     "properties": {
      "capital": "Harare",
      "country": "Zimbabwe",
      "continent": "africa"
     }
    }

Possible values for continent: ['north-america', 'oceania', 'south-america', 'europe', 'asia', 'africa'].

const countries = require('capitals-coordinates')
    .findByCountryMatch(/and/i); // array of GeoJSON with `properties`

const africanCountries = require('capitals-coordinates')
    .findByContinent('africa');

Method .eu28() return list of EU countries (updated: December 2016).

We use this module to discover countries supported by various API - eg. we are working application working with AwesomeHotelBookings . They claim to provide hotel booking "Europe-wide", though they lie - they don't provide such services in Norway, so we won't advertise app in Norway.