Example of concatenating multiple nested objects with template literals in JavaScript.

example-concat.js

row = {
    "id": 2,
    "name": "Erde",
    "diameterKm": 12756,
    "gravitation": 9.81,
    "terrain": "Dschungel, Grasland, Berge, Wüste",
    "populationCount": 8000000,
    "prominentPeople": [
      {
        "name": "Rose Imaginär",
        "birthYear": 2000,
        "height": 170,
        "sex": "female"
      },
      {
        "name": "Mike Earthling",
        "birthYear": 1980,
        "height": 190,
        "sex": "female"
      }
    ]
  };
let persons data
            .map(row => {
                const names = Object.keys(row);
                const vals = Object.values(row);
                const prominentPeopleIdx = names.indexOf("prominentPeople");

                // Map nested objects
                if(vals && vals[prominentPeopleIdx]) {
                    vals[prominentPeopleIdx] = vals[prominentPeopleIdx]
                        .map((item) => `${item.name} [${item.birthYear}]`)
                        .join(', ');
                }

                return new Function(...names, `return \`${templateRow}\`;`)(...vals);
            }).join("");
console.log(persons)