Nan::AsyncQueue is failed at runtime

Question

Hi I am learning addon implementation. I am getting the error below.

This error coming from js file:

vec1.add_number(20,function(err,res)) SyntaxError: Unexpected token )

index.js:

var m = require('./');
   var vec1 = new  m.Vector(20, 10, 0); // call to new
   vec1.add_number(20,function(err,res)) // **here is the error pls help to fix**
    {
    if(err)
    console.error(err);
    else
    console.log('Final Result=%d',res);

testworker.cc

#include<nan.h>
#include  "testWorker.h"
#include<iostream>
void TestWorker::Execute()
{
 std::cout<<"its Execition\n";
 myNumber +=6;
}

void TestWorker::Handleokcallback()
{
std::cout<<"Enter to Handleokcallback\n";
Nan::HandleScope scope;
auto numberjs= Nan::New(myNumber);
v8::local<v8::Value> argv[] ={Nan::Undefined,numberjs};
myCallback->call(2,argv);    
}

Here is the error logs

module.js:435 return process.dlopen(module, path._makeLong(filename)); ^

Error: /home/admin1/Desktop/node-addon-tutorial-master/VectorExample/build/Release/myModule.node: undefined symbol: _ZTV10TestWorker at Error (native) at Object.Module._extensions..node (module.js:435:18) at Module.load (module.js:344:32) at Function.Module._load (module.js:301:12) at Module.require (module.js:354:17) at require (internal/module.js:12:17) at Object. (/home/admin1/Desktop/node-addon-tutorial-master/VectorExample/bindings.js:6:13) at Module._compile (module.js:410:26) at Object.Module._extensions..js (module.js:417:10) at Module.load (module.js:344:32)

Answer 1

You have one extra ) in function(err,res)) and you're missing }) at the end.

Here's your code without syntax errors.

var m = require('./');
var vec1 = new  m.Vector(20, 10, 0); // call to new
vec1.add_number(20,function(err,res) { // changed ) with {
    if(err)
       console.error(err);
    else
       console.log('Final Result=%d',res);
}); // Added this