--- title: Writing Node.js addons with .NET Native AOT | daily.dev description: The C# Dev Kit team replaced C++ Node.js addons (built with node-gyp and requiring Python) with C# using .NET Native AOT. The post walks through building a... canonical: https://daily.dev/posts/writing-node-js-addons-with-net-native-aot-lseoiscpd twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Writing Node.js addons with .NET Native AOT | daily.dev og:description: The C# Dev Kit team replaced C++ Node.js addons (built with node-gyp and requiring Python) with C# using .NET Native AOT. The post walks through building a... og:url: https://daily.dev/posts/writing-node-js-addons-with-net-native-aot-lseoiscpd og:image: https://api.daily.dev/og/posts/LSeOiScpD.png og:image:alt: Writing Node.js addons with .NET Native AOT og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Writing Node.js addons with .NET Native AOT **[.NET Blog](https://daily.dev/sources/dotnet)** · 10 min read · 41 upvotes · 3 comments ## Summary The C# Dev Kit team replaced C++ Node.js addons (built with node-gyp and requiring Python) with C# using .NET Native AOT. The post walks through building a Node.js native addon in C# using N-API, covering the project setup, module entry point with [UnmanagedCallersOnly], P/Invoke via [LibraryImport] with a custom DLL resolver pointing to the host process, UTF-8 string marshalling using Span and ArrayPool, and exposing functions to TypeScript. The result eliminated the Python dependency, simplified CI pipelines, and matched C++ performance while opening the door to hosting .NET logic in-process within Node.js. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@germancarlossuarez** · 4 upvotes > Great advance!!! **@sevensolutions** · 3 upvotes > Very interesting article 😁 ## Similar posts on daily.dev - [Node Weekly Issue 621: April 23, 2026](https://daily.dev/posts/node-weekly-issue-621-april-23-2026-z0ag9h21x) · Node Weekly · 3 upvotes · 0 comments - [Making Reflection Native AOT Safe in .NET 10: DynamicallyAccessedMembers Guide](https://daily.dev/posts/making-reflection-native-aot-safe-in-net-10-dynamicallyaccessedmembers-guide-xpy12bjep) · We Are .NET · 3 upvotes · 0 comments - [Full-Stack Type Safety Across Languages with @nx/dotnet](https://daily.dev/posts/full-stack-type-safety-across-languages-with-nx-dotnet-ka8begadt) · Nx · 1 upvotes · 0 comments --- Tags: [#nodejs](https://daily.dev/tags/nodejs), [#c#](https://daily.dev/tags/c#) [View this post on daily.dev](https://daily.dev/posts/writing-node-js-addons-with-net-native-aot-lseoiscpd) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Writing Node.js addons with .NET Native AOT","url":"https://daily.dev/posts/writing-node-js-addons-with-net-native-aot-lseoiscpd","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/writing-node-js-addons-with-net-native-aot-lseoiscpd"},"datePublished":"2026-04-20T20:00:57.105Z","dateModified":"2026-04-20T20:01:24.414Z","description":"The C# Dev Kit team replaced C++ Node.js addons (built with node-gyp and requiring Python) with C# using .NET Native AOT. 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