const { SiteClient } = require('datocms-client');
async function run() {
  const client = new SiteClient('YOUR-API-TOKEN');
  
  const environmentId = 'main';
  const environment = await client.environment.find(environmentId);
  
  console.log(environment);
}
run();

> 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,
    "forked_from": "main"
  }
}