An extension that provides async support for URLSession data function on Linux. See: https://medium.com/hoursofoperation/use-async-urlsession-with-server-side-swift-67821a64fa91?sk=bc142f8d3b6a444253eea660646aa822

URLSession+async.swift

import Foundation
#if canImport(FoundationNetworking)
import FoundationNetworking
#endif

/// Defines the possible errors
public enum URLSessionAsyncErrors: Error {
    case invalidUrlResponse, missingResponseData
}

/// An extension that provides async support for fetching a URL
///
/// Needed because the Linux version of Swift does not support async URLSession yet.
public extension URLSession {
 
    /// A reimplementation of `URLSession.shared.data(from: url)` required for Linux
    ///
    /// - Parameter url: The URL for which to load data.
    /// - Returns: Data and response.
    ///
    /// - Usage:
    ///
    ///     let (data, response) = try await URLSession.shared.asyncData(from: url)
    func asyncData(from url: URL) async throws -> (Data, URLResponse) {
        return try await withCheckedThrowingContinuation { continuation in
            let task = self.dataTask(with: url) { data, response, error in
                if let error = error {
                    continuation.resume(throwing: error)
                    return
                }
                guard let response = response as? HTTPURLResponse else {
                    continuation.resume(throwing: URLSessionAsyncErrors.invalidUrlResponse)
                    return
                }
                guard let data = data else {
                    continuation.resume(throwing: URLSessionAsyncErrors.missingResponseData)
                    return
                }
                continuation.resume(returning: (data, response))
            }
            task.resume()
        }
    }
}

One small error, I believe. You shouldn't use URLSession.shared as this is an extension on URLSession itself and you may have different ones for different configurations (e.g. headers, auth, etc.)

One small error, I believe. You shouldn't use URLSession.shared as this is an extension on URLSession itself and you may have different ones for different configurations (e.g. headers, auth, etc.)

Very good point, fixed!