how can i transform this object in to array?

const obj = {
  file0: {
    fieldName: 'file0',
    originalFilename: '4.png',
  },
  file1: {
    fieldName: 'file1',
    originalFilename: '1.jpg',
  },
  file2: {
    fieldName: 'file2',
    originalFilename: '2.jpg',
  },
  file3: {
    fieldName: 'file3',
    originalFilename: '3.png',
  }
}

// fast
const arr1 = Object.values(obj).slice(0); // see below why I slice
console.log(arr1);

// alternative using map: 

const arr2 = Object.keys(obj).map(key => obj[key]);
console.log(arr2);

// include the key:

const arr3 = Object.keys(obj).map(key => ({ [key]: obj[key] }));
console.log(arr3);

// Taking the Object.values directly, will POINT to the original object:
const arr4 = Object.values(obj);
arr4[0].fieldName = "XXX"
console.log(obj);