Swiftpack.co -  lightyear/Request as Swift Package
Swiftpack.co is a collection of thousands of indexed Swift packages. Search packages.
A Combine-based wrapper around URLSession.
.package(url: "https://github.com/lightyear/Request.git", from: "0.5.0")


Request is a simple Combine-based wrapper around URLSession.

  • An endpoint is defined in its own Request-conforming type.
  • These types define how to talk to that endpoint, falling back to sensible defaults.
  • Each type declares the model type it returns and optionally a context type.
  • A context can be provided when you start a request and it will be given back to parse the response.


Add Request to your project using Swift Package Manager in Xcode or to your dependencies in Package.swift:

.package(url: "https://github.com/lightyear/Request", from: "0.1.0")


These examples use the models at JSONPlaceholder. For example, the /users endpoint returns data like this:

        "id": 1,
        "name": "Leanne Graham",
        "username": "Bret",
        "email": "Sincere@april.biz",
        "address": {
            "street": "Kulas Light",
            "suite": "Apt. 556",
            "city": "Gwenborough",
            "zipcode": "92998-3874",
            "geo": {
                "lat": "-37.3159",
                "lng": "81.1496"
        "phone": "1-770-736-8031 x56442",
        "website": "hildegard.org",
        "company": {
            "name": "Romaguera-Crona",
            "catchPhrase": "Multi-layered client-server neural-net",
            "bs": "harness real-time e-markets"

This could be modeled in a Codable type:

struct User: Codable {
    var id: Int
    var name: String
    var username: String
    var email: String
    // etc...

Here is a Request-conforming type to fetch the list of users:

struct GetUsersRequest: Request {
    typealias ModelType = [User]
    typealias ContextType = Void

    let method = HTTPMethod.get
    let host = "jsonplaceholder.typicode.com"
    let path = "/users"

    func parseResponse(context: Void?, data: Data) throws -> [User] {
        try decode([User].self, from: data)

To make the request and do something with the returned list of users:

    .catch {
        // handle errors
    }.sink {
        // $0 is an array of User instances


Declaring a base URL

Your types don't have to be structs. If you wished, you could have a base type that defined sensible defaults for a hierarchy of requests, such as a base URL:

class BaseAPI {
    let baseURL = URL(string: "https://jsonplaceholder.typicode.com/"

class GetUsersRequest: BaseAPI, Request {
    let path = "users"

    func parseResponse(context: Void?, data: Data) throws -> [User] {
        try decode([User].self, from: data)

Or you could introduce your own small protocol to provide a default:

protocol JSONPlaceholderRequest: Request {}

extension JSONPlaceholderRequest {
    var baseURL = URL(string: "https://jsonplaceholder.typicode.com/" }

struct GetUsersRequest: JSONPlaceholderRequest {
    let path = "users"

    func parseResponse(context: Void?, data: Data) throws -> [User] {
        try decode([User].self, from: data)


The Request protocol declares two functions that are used for reporting some basic diagnostics: logDebug() and logError(). The former is used for request lifecycle events and the latter for non-transient network errors. Transient errors are ones that are expected to occur on real-world networks, like user cancellations, time outs, connection errors and network unavailability. These errors still fail the request, but the logError() function gives you a single place to log non-transient errors so you don't have to put those log statements everywhere in your app.

The protocol extension implements these functions by print()-ing them to the debug console, but you can override them to provide different behavior:

extension Request {
    func logDebug(_ message: String) {
    func logError(_ message: String, data: [String: Any]) {
        // data includes additional details about the request that failed and
        // the error


The library includes a TestSession type that can be assigned to the shared RequestTaskManager.shared.session property. This provides a way to set up mocks and expectations on network requests without generating real network activity. An example is in RequestTests.swift.


This library is maintained by @sjmadsen. Bug reports, feature requests and PRs are appreciated!


Stars: 1
Last commit: 3 weeks ago

Ad: Job Offers

iOS Software Engineer @ Perry Street Software
Perry Street Software is Jack’d and SCRUFF. We are two of the world’s largest gay, bi, trans and queer social dating apps on iOS and Android. Our brands reach more than 20 million members worldwide so members can connect, meet and express themselves on a platform that prioritizes privacy and security. We invest heavily into SwiftUI and using Swift Packages to modularize the codebase.

Release Notes

8 weeks ago

Initial release

Swiftpack is being maintained by Petr Pavlik | @ptrpavlik | @swiftpackco | API