const { SiteClient } = require('datocms-client');
async function run() {
  const client = new SiteClient('YOUR-API-TOKEN');
  
  const itemTypeFilterId = '34';
  const itemTypeFilter = await client.itemTypeFilter.find(itemTypeFilterId);
  
  console.log(itemTypeFilter);
}
run();

> node example.js
{
  "id": "34",
  "name": "Draft posts",
  "filter": {
    "status": {
      "eq": "draft"
    }
  },
  "shared": true,
  "itemType": "44"
}