File: binding.cc

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

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

// Not using the full NODE_MODULE_INIT() macro here because we want to test the
// addon loader's reaction to the FakeInit() entry point below.
extern "C" NODE_MODULE_EXPORT void
NODE_MODULE_INITIALIZER(v8::Local<v8::Object> exports,
                        v8::Local<v8::Value> module,
                        v8::Local<v8::Context> context) {
  NODE_SET_METHOD(exports, "hello", Method);
}

static void FakeInit(v8::Local<v8::Object> exports,
                     v8::Local<v8::Value> module,
                     v8::Local<v8::Context> context) {
  auto isolate = context->GetIsolate();
  auto exception = v8::Exception::Error(v8::String::NewFromUtf8(isolate,
      "FakeInit should never run!").ToLocalChecked());
  isolate->ThrowException(exception);
}

// Define a Node.js module, but with the wrong version. Node.js should still be
// able to load this module, multiple times even, because it exposes the
// specially named initializer above.
#undef NODE_MODULE_VERSION
#define NODE_MODULE_VERSION 3
NODE_MODULE(NODE_GYP_MODULE_NAME, FakeInit)