SwiftyESBuild is a Swift Package that wraps ESBuild to ease bringing bundling capabilities to Swift on Server apps.

First, you need to add SwiftyESBuild as a dependency in your project's Package.swift:

.package(url: "https://github.com/tuist/SwiftyESBuild.git", .upToNextMinor(from: "0.2.0"))

Once added, you'll create an instance of SwiftyESBuild specifying the version you'd like to use and where you'd like it to be downloaded.

let esbuild = SwiftyESBuild(version: .latest, directory: "./cache")

If you don't pass any argument, it defaults to the latest version in the system's default temporary directory. If you work in a team, we recommend fixing the version to minimize non-determinism across environments.

To run ESBuild you need to invoke the run function:

import TSCBasic // AbsolutePath

let entryPointPath = AbsolutePath(validating: "/project/index.js")
let outputBundlePath = AbsolutePath(validating: "/projects/build/index.js")
try await esbuild.run(entryPoint: entryPointPath, options: .bundle, .outfile(outputBundlePath))