What is getJSON in getProfile returning to?

This answer is a bit late, so hoping it will help someone else that is having the same question (like I did). From playing around with the code on a mock up version, I can try to answer the question. The first return getJSON(wikiUrl + person.name); statement is part of the .map() method. To understand it, it may be necessary to understand how the map method works. It seems to be 'constructing' an array profiles , filling it up with each index person . In other words, with each iteration, profiles[each iteration] or profiles[person] = assigned the return value of getJSON(wikiUrl + person.name). Once the profiles array construction is complete (array size should equal json.people.length), it is returned via return profiles;

One additional comment: I couldn't manage to see the profiles array while it was 'in construction'. I tried with debugger and stepping in each iteration. I could only see contents of profiles after it was fully built.

I did a simplified example here of the .map method itself without the added complication of promise concept.

let Arg = {
  message: "Any message",
  number: 4,
  people: [
    {
      Name: "Jasmine",
      Location: "Vienna"
    },
    { 
      Name: "Jason", 
      Location: "Venice"
    },
    {
      Name: "Sarah",
      Location: "Toronto"
    },
    {
      Name: "Albert",
      Location: "St. Louis"
    },
  ]
};


function getProfiles(json) {
  const profiles = json.people.map(index => {
    //  console.log(index.Name + ", from " + index.Location);
    return index.Name + ", from " + index.Location;
  });
  return profiles;
}

console.log( `this function getProfiles accepts an argument and the returns the value of 'profiles' is as follows...`);
console.log( getProfiles(Arg) );

//output :
// [
//   "Jasmine, from Vienna",
//   "Jason, from Venice",
//   "Sarah, from Toronto",
//   "Albert, from St. Louis"
// ]

I got an email notification but I guess Gareth deleted his answer.

To clarify, function(x) => {x} and function(x) => {return x;} is NOT the same.

function(x) => x and function(x) => {return x;} IS the same.

I'm fairly confident of this, as I had to learn the hard way debugging code; it was a topic on Promises, so debugging took a good hour or so.