rambdax/src/move.js

Extended version of Rambda - a lightweight, faster alternative to Ramda

import { curry } from './curry'

function moveFn(
  fromIndex, toIndex, list
){
  if (fromIndex < 0 || toIndex < 0){
    throw new Error('Rambda.move does not support negative indexes')
  }
  if (fromIndex > list.length - 1 || toIndex > list.length - 1) return list

  const clone = list.slice()
  clone[ fromIndex ] = list[ toIndex ]
  clone[ toIndex ] = list[ fromIndex ]

  return clone
}

export const move = curry(moveFn)