This integration contains extensions for the Node.js hosting package for Aspire, including support for frontend monorepos (Nx, Turborepo).

Getting Started

Install the package

In your AppHost project, install the package using the following command:

dotnet add package CommunityToolkit.Aspire.Hosting.JavaScript.Extensions

Example usage

For Nx and Turborepo monorepos, use the dedicated monorepo methods to avoid package installation race conditions:

// Nx workspace
var nx = builder.AddNxApp("nx", workingDirectory: "../frontend")
    .WithYarn()
    .WithPackageManagerLaunch(); // Automatically uses yarn from installer

var app1 = nx.AddApp("app1");
var app2 = nx.AddApp("app2", appName: "my-app-2");

// Turborepo workspace
var turbo = builder.AddTurborepoApp("turbo", workingDirectory: "../frontend")
    .WithPackageManagerLaunch("pnpm"); // Explicitly specify pnpm

var turboApp1 = turbo.AddApp("app1");
var turboApp2 = turbo.AddApp("app2", filter: "custom-filter");

See MONOREPO.md for detailed documentation on monorepo support.

Configuring Package Manager for Monorepos

The WithPackageManagerLaunch() method configures which package manager command is used when running individual apps in Nx or Turborepo workspaces:

// Auto-infer from package installer
var nx = builder.AddNxApp("nx", workingDirectory: "../frontend")
    .WithYarn()
    .WithPackageManagerLaunch(); // Uses 'yarn' command

// Explicitly specify package manager
var turbo = builder.AddTurborepoApp("turbo", workingDirectory: "../frontend")
    .WithPnpm()
    .WithPackageManagerLaunch("pnpm"); // Uses 'pnpm' command

// Generated commands:
// Nx with yarn: yarn nx serve app1
// Turborepo with pnpm: pnpm turbo run dev --filter app1

Package installation with custom flags

You can pass additional flags to package managers during installation:

// yarn with frozen lockfile
builder.AddYarnApp("yarn-app", "./path/to/app")
    .WithYarnPackageInstallation(configureInstaller =>
    {
        configureInstaller.WithArgs("--frozen-lockfile", "--verbose");
    })
    .WithExternalHttpEndpoints();

// pnpm with frozen lockfile
builder.AddPnpmApp("pnpm-app", "./path/to/app")
    .WithPnpmPackageInstallation(configureInstaller =>
    {
        configureInstaller.WithArgs("--frozen-lockfile");
    })
    .WithExternalHttpEndpoints();

Additional Information

https://learn.microsoft.com/dotnet/aspire/community-toolkit/hosting-nodejs-extensions

Feedback & contributing

https://github.com/CommunityToolkit/Aspire