How to add a function that validates the card that the customer is typing?

Hello! I would like to know how I add a function that validates the card that the customer is typing? Our store's card registration framework makes use of the useEffect hook to execute an asynchronous function that uses the Axios library to make an HTTP POST request to a specific route ("/ccstorex/custom/v1/gerarjwk") and send a JSON object containing a contentType field.

The result of the request is stored in the res variable, which contains an HTTP response, including the data received from the server in the data property. From this data, the code defines a variable captureContext with the value of the keyId field of the data object.