RN Windows Support?

[gmacmaster]

I see mention on iOS and Android in the doc but no mention of RNW.

Is there a way to get this working on windows?

[mrousavy]

Yes, everything is cross-platform so it does work on Windows.

The only thing that we need to change is to get the turbomodule/ autolinked - which is just a single module that acts as an entry point for Nitro.

Nitro only needs reference to the jsi::Runtime and a CallInvoker - that's it.

[mrousavy]

To add support to another platform, you just need to call margelo::nitro::install(...) in a Runtime. This will install global.NitroModulesProxy into the Runtime's global.

nitro/packages/react-native-nitro-modules/cpp/entrypoint/InstallNitro.hpp

Lines 16 to 29 in c0ae25b

	/**
	* Installs Nitro into the given JS `runtime`.
	* This will create `global.NitroModulesProxy`, Nitro's entry-point,
	* which can be used to create all registered HybridObjects from JS.
	*
	* Also registers the given `dispatcher` which allows using callbacks,
	* and async code (Promises).
	* The `dispatcher` needs to implement `runAsync`/`runSync` to run
	* methods on whatever Thread can safely access `runtime`.
	* In a non-thread-safe Runtime, it needs to be a single Thread (e.g.
	* React's `CallInvoker`), but in a thread-safe Runtime it might just be
	* an implementation that runs the method directly.
	*/
	void install(jsi::Runtime& runtime, std::shared_ptr<Dispatcher> dispatcher);

cc @shirakaba

[shirakaba]

Here is my writeup of how to write a react-native-windows "attributed" native module (which can be installed as either a NativeModule or TurboModule) that installs a JSI HostObject on the JS global.

I'd help out, but I don't have even a spare half-hour from now until mid-November 🫠

Nitro only needs reference to the jsi::Runtime and a CallInvoker - that's it.

Here is my writeup of how to get access to callinvoker using the above approach.

[mrousavy]

This is really helpful, thanks Jamie!!

Windows support in Nitro is unfortunately also lower on my priority list for now because of a lot of other things (including VisionCamera stuff), so I don't think I can implement this anytime soon.

If anyone wants to tackle this, I can take time to review PRs and release it though!