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Getting Started with Async

The Async module is provided as a part of Vapor Core (vapor/core). It is a collection of convenience APIs (mostly extensions) built on top of SwiftNIO.


You can read more about SwiftNIO's async types (Future, Promise, EventLoop, and more) in its GitHub README or its API Docs.


This package is included with Vapor and exported by default. You will have access to all Async APIs when you import Vapor.

import Vapor // implies `import Async`


The Async module, part of the larger Vapor Core package, can also be used on its own with any Swift project.

To include it in your package, add the following to your Package.swift file.

// swift-tools-version:4.0
import PackageDescription

let package = Package(
    name: "Project",
    dependencies: [
        .package(url: "", from: "3.0.0"),
    targets: [
      .target(name: "Project", dependencies: ["Async", ... ])

Use import Async to access the APIs.


Continue to Async → Overview for an overview of Async's features.