Hiding Javascript Object's value from JSON.stringify

private-property.js

function Data() {
  var privProp = 5;
  
  this.name = "some data object";

  Object.defineProperty(this, 'getPropPublic', {
    get: function() { return privProp; }
  }); 
}

var data = new Data();
console.dir(JSON.stringify(data));
console.log(data.getPropPublic);