pretty-json.js

const obj = {
  "first_name": "John",
  "last_name": "Smith",
  "age": 21,
  "hobbies": [ "programming", "workout", null, undefined, 24, "\"has double quotes\"" ],
  "nested": {
    "arr": [ "one", "two", "three" ],
  },
  "nested_arr": [
    "first as string",
    {
      "latin": [ "alpha", "beta", "[gamma]" ]
    },
    null
  ]
};

const stringify = (obj, indent = 2) => 
  JSON.stringify(obj, (key, value) => {
    if (Array.isArray(value) && !value.some(x => x && typeof x === 'object')) {
      return `\uE000${JSON.stringify(value.map(v => typeof v === 'string' ? v.replace(/"/g, '\uE001') : v))}\uE000`;
    }
    return value;
  }, indent).replace(/"\uE000([^\uE000]+)\uE000"/g, match => match.substr(2, match.length - 4).replace(/\\"/g, '"').replace(/\uE001/g, '\\\"'));

console.log(stringify(obj));