How to convert values of array to array filtered

Question

I have this problem, I use Angular 8, I hope you can help me, I have been unable to solve it for a long time.

I have this array:

datos = [{
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'ADMON',
    Value: '1'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'ADMON',
    Value: '2'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'ADMON',
    Value: '3'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'USER',
    Value: '1'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'USER',
    Value: '2'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'USER',
    Value: '4'
  },
]

I need to filter and group them like this :

result = [
  {ADMON: {0: 1, 
           1: 2, 
           2: 3, 
           3: 4}},
  {USER:  {0: 1, 
           1: 2, 
           2: 4}}
];

I've tried many ways but I can't, I hope you can help me, thank you very much in advance.

Answer 1

Here is one potential solutions that use a number of array methods to accomplish the task at hand.

const datos = [{
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'ADMON',
    Value: '1'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'ADMON',
    Value: '2'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'ADMON',
    Value: '3'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'USER',
    Value: '1'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'USER',
    Value: '2'
  },
  {
    Description: 'Puede Insertar',
    Id: 1,
    Type: 'USER',
    Value: '4'
  }
];

const grouped = datos.reduce((acc, el) => {
  if (!acc[el.Type]) acc[el.Type] = {};
  const index = Object.values(acc[el.Type]).length;
  acc[el.Type] = {
    ...acc[el.Type],
    [index]: el.Value
  }
  return acc;
}, {});

const final = Object.entries(grouped).map(([key, val]) => {
  return { [key]: val }
});

console.log(final);