Hello world native extension example doesnt load

[matthewn4444]

Hello, i have been struggling for hours on this. I have been able to get native node extensions to work on node webkit in the past but I am trying electron and i have zero success.

I am building the extension with rebuild and then loading it in the preload script and i get the generic error when i try to load up the application

Error: Module did not self-register: '\\?\C:\project\build\Release\extension.node'.

My folder structure is as such

- build
- node_modules
- native
       - source.cc
- lib
       - <js files>
- binding.gyp
- index.html
- package.json
- preload.js

binding.gyp

{
  "targets": [
    {
      "target_name": "extension",
      "sources": [ "native/extension.cc" ],
    }
  ]
}

extension.cc

#include <v8.h>
#include <node.h>


static void Method(const v8::FunctionCallbackInfo<v8::Value>& args) {
  v8::Isolate* isolate = args.GetIsolate();
  args.GetReturnValue().Set(
      v8::String::NewFromUtf8(isolate, "world").ToLocalChecked());
}


static void InitModule(v8::Local<v8::Object> exports,
                       v8::Local<v8::Value> module,
                       v8::Local<v8::Context> context) {
  NODE_SET_METHOD(exports, "hello", Method);
}

preload.js

const binding = require("./build/Release/extension.node")

package.json

{
  "name": "project",
  "version": "1.0.0",
  "main": "main.js",
  "scripts": {
    "start": "electron .",
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "devDependencies": {
    "@electron/rebuild": "^3.7.1",
    "electron": "^33.3.1",
    "node-gyp": "^11.0.0"
  },
  "dependencies": {
    "@electron/remote": "^2.1.2",
    "electron-json-storage": "^4.6.0",
    "jquery": "^3.7.1",
    "koffi": "^2.10.0",
    "node-fetch": "^2.6.1"
  }
}

I am not sure what is the problem. The extension builds fine. Used .\node_modules\.bin\electron-rebuild.cmd and said it completed.

The electron verison is 33.3.1 and is x64. I am on Windows.

[matthewn4444]

I figured it out

[mungjin01]

I figured it out

@matthewn4444
I have the same error with this problem. Could you let me know how you solved it?

[matthewn4444]

I think if i remember what i did, I believe the hello world app just will never load because the code was wrong (or that was another issue). I loaded some old code I had from an old node-webkit project and used that source and it worked. Although i dont remember.

Napi::Object Init(Napi::Env env, Napi::Object exports) {
    exports.Set(Napi::String::New(env, "MyFunction"),
                Napi::Function::New(env, MyFunction, nullptr, arg));
    return exports;
}

{
  "targets": [
    {
      "target_name": "my-app",
      "sources": [ "native/main.cc" ],
      'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
      "cflags!": [ "-fno-exceptions" ],
      "cflags_cc!": [ "-fno-exceptions" ],
      'include_dirs': [
        "<!@(node -p \"require('node-addon-api').include\")"
      ],
      'dependencies': [
        "<!(node -p \"require('node-addon-api').gyp\")"
      ],
    }
  ]
}

Use this instead of the hello world code. Maybe this was the soluton?