An ES6 / pure function implementation of the JS splice method that returns an object of the new array and the removed elements

pureSplice.js

function safeSplice(array, start, deleteCount, ...replace) {
  const removed = array.splice(start, deleteCount, ...replace)
  return { 
    array: array,
    removed: removed,
  }
} 

/** usage
const array = [1, 2, 3, 4, 5, 6]
const { array: newArray, removed } = safeSplice(array, 2, 2, 'foo', 'bar')
console.log(newArray, removed)
*/

This function is an 'inpure function', isn't it? It modifies the array passed as parameter.

Yes, it's not really a pure function because it modifies the array.

I made one
https://gist.github.com/YuCJ/0a42afc1b578b2545195a7b688dcbab6