node.js函数如何获取调用者的文件目录路径: 用callsite获取错误堆栈的每一层文件名及路径

callsite模块

var path = require('path'),
    callsite = require('callsite');

module.exports = {
  someFn: function () {
    var stack = callsite(),
        requester = stack[1].getFileName();

    console.log(path.dirname(requester));
  }
};

Error打印堆栈

module.exports = function(){
  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;
  return stack;
};

var getStack = function() {
  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;
  return stack;
};

var stack = getStack()
console.log(stack)
console.log(stack[0].getFileName())