Circular Reference in Javascript, and how to avoid it.

circularref

//https://www.npmjs.com/package/json-stringify-safe
var stringify = require("json-stringify-safe");

var a = {
  type: "Son",
  name: "John"
};

var b = {
  type: "father",
  name: "Michael"
};

var c = {
  type: "grandpa",
  name: "Elias"
};

a.father = b;
a.grandpa = c;

b.son = a;
b.father = c;

c. grandson = a;
c.son = b;

try {
  //Will lead to circular reference while printing in console
  console.log("Son ", a);
  //Will lead to error because of the endless conversion
  console.log("Son JSON Parsed ", JSON.stringify(a));
}
catch (ex) {
  console.log("Error >> ", ex);
}
finally {
  //this needs to happen in finally, because of previous conversion.
  //Will print safe parsed JSON string
  console.log("Son Safe Parsed ", stringify(a));
}