const { FedaPay, Customer } = require('fedapay');
/* Replace YOUR_SECRETE_API_KEY with your real API key */
FedaPay.setApiKey("YOUR_SECRETE_API_KEY");
/* Specify whether you want to run your query in test or live mode */
FedaPay.setEnvironment('sandbox'); //or setEnvironment('live');
/* Afficher le client */
const customer = await Customer.retrieve( ID, params = {}, headers = {} );

{
  "id": 123,
  "firstname": "<string>",
  "lastname": "<string>",
  "full_name": "<string>",
  "email": "jsmith@example.com",
  "account_id": 123,
  "phone_number_id": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "deleted_at": "2023-11-07T05:31:56Z"
}