import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: 'My API Key',
});

const simCardGroups = await client.simCardGroups.list();

console.log(simCardGroups.data);

{
  "data": [
    {
      "id": "6a09cdc3-8948-47f0-aa62-74ac943d6c58",
      "record_type": "sim_card_group",
      "default": true,
      "name": "My Test Group",
      "data_limit": {
        "amount": "2048.1",
        "unit": "MB"
      },
      "consumed_data": {
        "unit": "MB",
        "amount": "2048.1"
      },
      "sim_card_count": 10,
      "private_wireless_gateway_id": "6a09cdc3-8948-47f0-aa62-74ac943d6c58",
      "wireless_blocklist_id": "5aa584f6-14b1-41b2-8e01-1c04d1ee77c1",
      "created_at": "2018-02-02T22:25:27.521Z",
      "updated_at": "2018-02-02T22:25:27.521Z"
    }
  ],
  "meta": {
    "page_number": 2,
    "page_size": 25,
    "total_pages": 3,
    "total_results": 55
  }
}