1 Object.defineProperty(global, '__stack', {
 2   get: function(){
 3     var orig = Error.prepareStackTrace;
 4     Error.prepareStackTrace = function(_, stack){ return stack; };
 5     var err = new Error;
 6     Error.captureStackTrace(err, arguments.callee);
 7     var stack = err.stack;
 8     Error.prepareStackTrace = orig;
 9     return stack;
10   }
11 });
12 
13 Object.defineProperty(global, '__line', {
14   get: function(){
15     return __stack[1].getLineNumber();
16   }
17 });
18 
19 console.log(__line);