Answer: All APIs of Node.js library are aynchronous that is non-blocking. It essentially means a Node.js based server never waits for a API to return data. Server moves to next API after calling it and a notification mechanism of Events of Node.js helps server to get response from the previous API call.
Source: tutorialspoint.com
| // Lists of countries with ISO 3166 codes, presented in various formats. | |
| // Last Updated: July 30, 2020 | |
| // If you're using PHP, I suggest checking out: | |
| // https://github.com/thephpleague/iso3166 | |
| // or Laravel: https://github.com/squirephp/squire | |
| // | |
| // JS developers can check out: | |
| // https://www.npmjs.com/package/iso3166-2-db | |
| // |