Hey,
You are not accessing the "size" property, but treat "args[0]" as if it
were a number (which it is not, it's a ArrayBuffer). Since you have
established that args[0] is an ArrayBuffer, you can use cast, which would
look roughly like this:
Local array_buffer = Local::cast(args[0]);
size_t size = array_buffer->ByteLength();
On Mon, Sep 2, 2019 at 12:50 AM Jonathan Doster wrote:
> Hey everyone!
>
> I am trying to pass an ArrayBuffer from JS to C++, and when I debug the
> "size" variable is 0.
> I do not understand what I am doing wrong, ultimately my goal is to be
> able to read and write the buffer, copy, etc.
> Thank you!!
>
> var api = require('../src/public/api')
> api.Method(new ArrayBuffer([1, 2, 3, 4]))
>
> void Method(const v8::FunctionCallbackInfo )
> {
> CHECK_ARGS(args, args[0]->IsArrayBuffer());
> uint32_t size = args[0]->Uint32Value();
> }
>
>
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> .
>
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