I wanted to have better error returns in my node apps, this gives a better stack trace for json responses

prettyErrors.js

// Usage
var err = new Error('Hey th\'upid, you didn\'t Catch your shenanigans!');
console.log(err.toJSON());

// If run in the chrome console
// this is exceptionally usefully if debuggong locally, but stacks aren't so great in production
return { 
  stack: "Error: Hey th'upid, you didn't Catch your shenanigans! <anonymous>:2:13 at Object.InjectedScript._evaluateOn (<anonymous>:895:140) at Object.InjectedScript._evaluateAndWrap (<anonymous>:828:34)at Object.InjectedScript.evaluate (<anonymous>:694:21)", 
  message: "Hey th'upid, you didn't Catch your shenanigans!"
}

/**
 * Pretty Errors
 */
Object.defineProperty(Error.prototype, 'toJSON', {
  value: function () {

    var alt = {};

    Object.getOwnPropertyNames(this).forEach(function (key) {
        alt[key] = this[key];
    }, this);

    return alt;
    
  },
  configurable: true
});