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Array of object. Limit to an X amount of elements that a specific property can have as max

I have an array of objects with nested arrays. That looks like the following

[
{
 type: 'type',
 props: {
  latitude: 100,
  items: [
   {type: 'item1' , elements: '10', utilities: '100},
   {type: 'item2' , elements: '10', utilities: '100},
   {type: 'item3' , elements: '10', utilities: '100},
   {type: 'item4' , elements: '10', utilities: '100},
   {type: 'item5' , elements: '10', utilities: '100},
  ]
 }
},
{
 type: 'type2',
 props: {
  latitude: 150,
  items: [
   {type: 'item1' , elements: '10', utilities: '100},
   {type: 'item2' , elements: '10', utilities: '100},
   {type: 'item4' , elements: '10', utilities: '100},
   {type: 'item5' , elements: '10', utilities: '100},
  ]
 }
},
...
]

Now I want this array to have [x].props.items <= 3 elements I dont care about the order, I basically want to lets say keep the first 3 elements

resulting in

[
{
 type: 'type',
 props: {
  latitude: 100,
  items: [
   {type: 'item1' , elements: '10', utilities: '100},
   {type: 'item2' , elements: '10', utilities: '100},
   {type: 'item3' , elements: '10', utilities: '100}
  ]
 }
},
{
 type: 'type2',
 props: {
  latitude: 150,
  items: [
   {type: 'item1' , elements: '10', utilities: '100},
   {type: 'item2' , elements: '10', utilities: '100},
   {type: 'item4' , elements: '10', utilities: '100}
  ]
 }
},
...
]

I have tried doing

let newArr = arr.map(i => i.map(j => j.props.items.slice(0,3)))

But I dont think im heading in the right direction

about 4 years ago · Juan Pablo Isaza
Answer question
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