const SiteClient = require('datocms-client').SiteClient;
const client = new SiteClient('YOUR-API-TOKEN');
const environmentId = 'main';
client.environment.find(environmentId)
.then((environment) => {
  console.log(environment);
})
.catch((error) => {
  console.error(error);
});

> node example.js
{
  "id": "main",
  "meta": {
    "status": "ready",
    "created_at": "2020-04-21T07:57:11.124Z",
    "last_data_change_at": "2020-04-21T07:57:11.124Z",
    "primary": true
  }
}