API version has been deprecated

[AlexandrLebedenko]

Hello, I found a small error in "Country Quiz" challenge at "Front-end Libraries Roadmap" curriculum. API that is specified in the assignment is already has been deprecated.

Although, understanding the problem and finding a solution yourself is also a good experience :)

[farfromexact]

Yes, the challenge reference is stale now. The curriculum points at REST Countries v3.1, but the provider's current documentation says v1 through v4 are deprecated and the stable API is v5:

https://restcountries.com/docs/countries/api-versions

The migration is not just a path replacement. The current base URL is:

https://api.restcountries.com/countries/v5

The v5 API uses an Authorization header and returns a JSON:API-style envelope rather than the old bare array. For a front-end challenge, do not commit a real API key in browser code. Use a small server-side proxy/serverless function, or use a checked-in snapshot during development if the assignment is meant to stay static.

A minimal request shape is:

const response = await fetch(
  "https://api.restcountries.com/countries/v5?limit=10",
  { headers: { Authorization: "Bearer YOUR_API_KEY" } }
);
const payload = await response.json();
const countries = payload.data.objects;

The exact field names also changed to nested names such as names.common and codes.alpha_2, so the quiz should normalize the response before generating questions. The current list and response-shape options are documented here:

https://restcountries.com/docs/countries

I would update the challenge text to say that v3.1 is deprecated, show the v5 endpoint and auth requirement, and explicitly warn learners not to expose a production key in a public React bundle.