erkanzileli

function orderByKey (arr, key, asc) {
  return arr.sort((a, b) => {
    if (a[key] < b[key]) {
      return asc === true ? -1 : 1
    }
    if (a[key] > b[key]) {
      return asc === true ? 1 : -1
    }
    return 0
  })

erkanzileli

var customMergeObjectsWithSameKeys = function (arr, key, mergeFunction) {
  var _arr = []
  arr.forEach(item => {
    var index = _arr.findIndex(_item => _item[key] === item[key])
    if (index === -1) {
      _arr.push(item)
    } else {
      _arr[index] = mergeFunction(_arr[index], item)
    }
  })