I have an array of objects like this:

const arr = [{
  name: "State",      
  values:["A", "B", "C" ],
},
{
  name: "Country",      
  values:['D', 'E', 'F'],
},
];

I want to convert the “values” to another object and add another key value to every element such as:

const arr = [{
  name: "State",      
  values:[{title:"A", flag:true}, {title:"B", flag:true}, {title:"C", flag:false}],
},
{
  name: "Country",      
  values:[{title:"D", flag:true}, {title:"E", flag:false}, {title:"F", flag:true}],
},
];

What is the best and fastest way for this conversion in javascript?