.NET Aspire for JavaScript/TypeScript

Orchestrate JavaScript and TypeScript applications using .NET Aspire's AppHost. Aspire treats JS/TS apps as first-class resources alongside .NET services, containers, and cloud infrastructure — providing service discovery, telemetry, health monitoring, and deployment from a single code-first model.

Important: The AppHost is always written in C#, even when orchestrating JS/TS apps. The Aspire.Hosting.JavaScript NuGet package provides the hosting APIs.

Prerequisites

• .NET SDK 10.0+ — Required for the Aspire AppHost
• Aspire CLI installed (aspire --version)
• Node.js 22+ with npm, yarn, or pnpm
• NuGet package: Aspire.Hosting.JavaScript in your AppHost project

# Install in AppHost project
dotnet add package Aspire.Hosting.JavaScript