Format object values to object string

formatToString.js

function formatToString(obj) {
  let a = {};
  Object.entries(obj).forEach(([key, value]) => {
    if (value) {
      if ((Array.isArray(value) && value.length > 0)
        || (typeof value === "object" && Object.keys(value).length > 0)
        || (typeof value !== "object" && (String(value).length > 0))
      ) {
        a[key] = parseInt(value) === 0 ? '' : value;
      } else {
        a[key] = "";
      }
    } else {
      a[key] = "";
    }
  });
  return a;
};

// Example
console.log(formatToString({
  name: "",
  age: 0,
  age2: "0",
  age3: 124,
  age4: "124",
  text: "hello",
  arr: [],
  arr2: ["t"],
  isNull: null,
  isUndefined: undefined,
  obj: {},
  obj2: { a: 'name' },
}));

// result
// {
//   name: '',
//   age: '',
//   age2: '',
//   age3: 124,
//   age4: '124',
//   text: 'hello',
//   arr: '',
//   arr2: [ 't' ],
//   isNull: '',
//   isUndefined: '',
//   obj: '',
//   obj2: { a: 'name' }
// }