@elastic/eui
Version:
Elastic UI Component Library
36 lines (34 loc) • 1.49 kB
JavaScript
;
var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.useDeepEqual = void 0;
var _slicedToArray2 = _interopRequireDefault(require("@babel/runtime/helpers/slicedToArray"));
var _react = require("react");
var _isEqual = _interopRequireDefault(require("lodash/isEqual"));
var _useUpdateEffect = require("./useUpdateEffect");
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
/**
* This hook is mostly a performance concern for third-party objs/arrays that EUI
* has no control over and may not be correctly memoized (i.e., will create a new
* reference on every rerender unless passed through this hook).
*/
var useDeepEqual = exports.useDeepEqual = function useDeepEqual(object) {
var _useState = (0, _react.useState)(object),
_useState2 = (0, _slicedToArray2.default)(_useState, 2),
memoizedObject = _useState2[0],
setMemoizedObject = _useState2[1];
(0, _useUpdateEffect.useUpdateEffect)(function () {
if (!(0, _isEqual.default)(object, memoizedObject)) {
setMemoizedObject(object);
}
}, [object]);
return memoizedObject;
};