Object function serialize and deserialize

test.js

let obj = {
  id: 14521,
  name: 'Annamalai',
  notify:function(){
     console.log(`Hallo ${this.name} ! Your ID is ${this.id}`)
  }
}

//obj.notify();

const change = (key,val) => {
  if(typeof val === 'function') {
    return val.toString();
  }
  return val;
}

const stringObj = JSON.stringify(obj,change);

//console.log(stringObj);

const revert = (key,val) => {
  if(typeof val === 'string' && val.indexOf('function') !== -1) {
      let newFnStr = `(${val}).call(this)`;
      return new Function(newFnStr);
  }
  return val;
}

const parseObj = JSON.parse(stringObj,revert);

console.log(parseObj);
parseObj.notify();