"use strict";

var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard");

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = useDiffItem;

var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));

var React = _interopRequireWildcard(require("react"));

var _algorithmUtil = require("../utils/algorithmUtil");

// @ts-nocheck
function useDiffItem(data, getKey, onDiff) {
  var _React$useState = React.useState(data),
      _React$useState2 = (0, _slicedToArray2.default)(_React$useState, 2),
      prevData = _React$useState2[0],
      setPrevData = _React$useState2[1];

  var _React$useState3 = React.useState(null),
      _React$useState4 = (0, _slicedToArray2.default)(_React$useState3, 2),
      diffItem = _React$useState4[0],
      setDiffItem = _React$useState4[1];

  React.useEffect(function () {
    var diff = (0, _algorithmUtil.findListDiffIndex)(prevData || [], data || [], getKey);

    if ((diff === null || diff === void 0 ? void 0 : diff.index) !== undefined) {
      onDiff === null || onDiff === void 0 ? void 0 : onDiff(diff.index);
      setDiffItem(data[diff.index]);
    }

    setPrevData(data);
  }, [data]);
  return [diffItem];
}