code: function notifySplice(inst, array, path, index, addedCount, removed) {
    notifySplices(inst, array, path, [{
      index: index,
      addedCount: addedCount,
      removed: removed,
      object: array,
      type: 'splice'
    }]);
  }
docs: Creates a splice record and sends an array splice notification for
  the described mutation
  
  Note: this implementation only accepts normalized paths
  
  @param {!PropertyEffectsType} inst Instance to send notifications to
  @param {Array} array The array the mutations occurred on
  @param {string} path The path to the array that was mutated
  @param {number} index Index at which the array mutation occurred
  @param {number} addedCount Number of added items
  @param {Array} removed Array of removed items
  @return {void}
  @private