feat: sync fetch

[mikesoylu]

Vibe coded fetch implementation:

// GET request
var response = fetch(url);

// With options
var response = fetch(url, {
    method: "POST",           // GET, POST, PUT, DELETE, etc.
    headers: {
        "Content-Type": "application/json",
        "Authorization": "Bearer token",
        "Accept": "application/json"
    },
    body: JSON.stringify(data)
});

// Response object
response.status      // HTTP status code (200, 404, etc.)
response.ok          // true if status is 200-299
response.statusText  // status as string
response.headers     // object with lowercase header names
response.body        // response body as string

Example Usage

// Fetch JSON API
var response = fetch("https://api.example.com/data");
if (response.ok) {
    var data = JSON.parse(response.body);
    console.log(data);
}

// POST with JSON
var response = fetch("https://api.example.com/submit", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ name: "test" })
});

[bellard]

mquickjs is intended to stay small so it is not possible to add a large standard library. Maybe doing that in another repository or as an example would be better.