JS takes key and value from an array object to form a new object

Get from an array object key and value Form a new object

const type = [
                    {
     amount: '', size: '4013' },
                    {
     amount: '1', size: '1613' },
                    {
     amount: '5', size: '2007' },
                    {
     amount: '9', size: '3613' },
                    {
     amount: '', size: '2413' },
                    {
     amount: '10', size: '1213' },
                    {
     amount: '', size: '3213' },
                    {
     amount: '11', size: '2013' },
                    {
     amount: '', size: '0807' },
                    {
     amount: '', size: '2807' },
                    {
     amount: '6', size: '1607' }
             ]

 let newArr={
    };
    type .map(itm=>{
    
            newArr[itm.size] = itm.amount
      })
console.log('1',newArr)
{
    1213: '10', 1607: '6', 1613: '1', 2007: '5', 2013: '11', 2413: '', 2807: '', 3213: '', 3613: '9', 4013: '', 0807: ''}

tips： Remove the null value inside

 let newArr={
    };
    type .map(itm=>{
    
        if (itm.amount) {
    
             newArr[itm.size] = itm.amount
          }
      })
console.log('1',newArr)
{
    1213: '10', 1607: '6', 1613: '1', 2007: '5', 2013: '11', 3613: '9'}