examle: capture all scopes on exception

gistfile1.txt

function bbb(x) {
  var cc = x + 1;
  var dd = cc + 2;
  debugger;
  return dd;
}

setInterval(function() {
  var aa = 123;
  //debugger;
  try {
    bbb(345);
    //throw new Error('aaaa');
  } catch(e) {
    console.log(e);
  }
  console.log('here');
}, 1000);

var d = global.v8debug.Debug;
d.setBreakOnException();
d.setListener(function(e,exec_state, event_data, data) {
  var scopes = [];
  for (var i=0; i < exec_state.frame(0).scopeCount(); ++i)
    scopes.push(exec_state.frame(0).scope(i).details_.details_[1]));
  console.log(scopes);
});

Noting the original tweet said to start node as:

node --expose_debug_as=v8debug example.js