gistfile1.txt

node debug 1.js 
debug> run
debugger listening on port 5858
connecting...ok
breakpoint #1 in #<Object>.[anonymous](exports=#<Object>, require=function require(path) {
    return Module._load(path, self);
  }, module=#<Module>, __filename=/home/vagrant/1.js, __dirname=/home/vagrant), /home/vagrant/1.js:1
(function (exports, require, module, __filename, __dirname) { console.log('bar')
                                                              ^
debug> next
bar
break in #<Object>.[anonymous](exports=#<Object>, require=function require(path) {
    return Module._load(path, self);
  }, module=#<Module>, __filename=/home/vagrant/1.js, __dirname=/home/vagrant), /home/vagrant/1.js:2
debugger;