Build Nitro Modules

Overview

End-to-end skill for building a React Native Nitro Module: monorepo scaffolding via Nitrogen, TypeScript HybridObject spec authoring, native code generation, platform implementation (C++/Swift/Kotlin), example app wiring, and publish preparation.

Nitro Modules use a codegen pipeline (nitrogen) that reads .nitro.ts spec files and generates native C++/Swift/Kotlin boilerplate. You then fill in the implementation. This is fundamentally different from old-style turbo modules.

NEVER modify any file inside nitrogen/generated/. These files are fully regenerated every time npx nitrogen runs — any manual edits will be silently overwritten. Always edit only the .nitro.ts spec file, then re-run nitrogen to regenerate.

Ask First — Before Doing Anything

First, determine what the user wants to do:

"Are you creating a new Nitro Module library from scratch, or adding a new HybridObject to an existing library?"

If creating a new library — ask all of these before any command: