Array to Object Utility

array_to_object.js

//Makes array of objects into an object sorted by a requested key
  //--> Key must be unique or collisions will happen and data lost
  /** (v0.0.2) Works better!
    -- softer failures (i.e. returns empty object instead of blowing up)
    -- use key names from on inner levels (eg. name.first)
  **/
function arrayToObject(keyToReplaceIndex, arr) {
  var obj = {};
  
  if(arr && arr.constructor === Array) {
    arr.forEach(function(search, index) {
      if(search) {
        var currentItem;
  
        keyToReplaceIndex.split('.').forEach(function(term) {
          currentItem = currentItem ? currentItem[term] : search[term];
        });

        obj[currentItem] = arr[index];
      }
    });
  }
  
  return obj;
}