call-site-line-print.js

function getLine () {
  var orig = Error.prepareStackTrace;
  Error.prepareStackTrace = function(_, stack){ return stack; };
  var err = new Error;
  Error.captureStackTrace(err, arguments.callee);
  var stack = err.stack;
  Error.prepareStackTrace = orig;
  var s = stack[0];
  var l = s.getLineNumber();
  return s.fun.toString().split(/\r?\n/)[ l - 1 ];
};

// outputs 'console.error(getLine());'
console.error(getLine());