How to implement imitation of getting data via API?

Question

API

Good afternoon,
How to simulate receiving data via API, if only a json file is given in the test task. I don't quite understand what they want from me.

spoiler

{
"response": [
{
"id": 1,
"attributes": {
"title": "Flat",
"rooms": 3,
}
}
]
}

Answer 1

simulate get request to json

export default class GetService{
    _apiBase = 'http://localhost:3000';

    async getResource(url) {
        const res = await fetch(`${this._apiBase}${url}`);
        if (!res.ok) {
            throw new Error(`Could not fetch ${url}` + 
                `, received ${res.status}`);
        }
        return await res.json();
    }

and how url feed him the path to json'y;)