Return Boolean value in node c++ addon

Question

In Node C++ Addon, I can return a String like this:

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

How can I achieve the same but setting a boolean value instead of a string?

There is an overload of `Set` that accepts a `bool`: https://v8docs.nodesource.com/node-4.8/da/da7/classv8_1_1_return_value.html#abbe0803e94a0eb36d04d9bd17ecb96a0 - what's the problem with that one? Of course you will also have to change the template parameter of `args` for that — UnholySheep, Sep 10 '20 at 12:49
@UnholySheep I wasn't aware of it, and I couldn't locate that docs site. Thanks for the answer, and for sharing the source. — Emad Omar, Sep 10 '20 at 12:51

score 0 · Answer 1 · answered Sep 11 '20 at 03:02

Thanks to @UnholySheep for providing links to the V8 docs.

args.GetReturnValue().Set() has an overload the accepts a bool, so you can just pass it directly.

void Method(const FunctionCallbackInfo<Value>& args) {
  Isolate* isolate = args.GetIsolate();  
  args.GetReturnValue().Set(true);
}

Return Boolean value in node c++ addon

1 Answers1