Jquery $.extend不是带有React SSR的函数

我在react SSR中面临一个问题

添加了两个插件，如下所示

import 'fullcalendar';
import 'fullcalendar-scheduler';

FullCalander在终端中抛出一个错误，如下所述

webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:1256
var oldMomentProto = $.extend({}, newMomentProto); // copy of original moment methods
                   ^

TypeError: $.extend is not a function
at Object.defineProperty.value (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:1256:24)
at __webpack_require__ (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:30:30)
at Object.defineProperty.value (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:4549:20)
at __webpack_require__ (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:30:30)
at Object.defineProperty.value (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:1754:25)
at __webpack_require__ (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:30:30)
at Object.defineProperty.value (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:12374:19)
at __webpack_require__ (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:30:30)
at module.exports (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:73:18)
at eval (webpack:///./node_modules/fullcalendar/dist/fullcalendar.js?:76:10)

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我也导入了jQuery，但不知道为什么会出现上述问题。

您是先加载jQuery吗？是的，我已经添加了jQuery，这不是我所要求的。您以什么顺序调用脚本？从“jquery”导入$；输入“时刻”；导入“完整日历”；导入“完整日历计划程序”；如上所述，将jquery导入从“jquery”更改为

import*as$或
从“jQuery”导入*为jQuery