Vue/React + Cesium1.63.1配置出错

    之前按照网上的教程配置过Vue+Cesium和React+Cesium配置，都能够成功运行。但是今天在完成一个功能的时候需要更新Cesium，更新后发现配置好的Cesium报错了，不能使用。
    报错Attempted import error: ‘cesium/Cesium’ does not contain a default export (imported as ‘Cesium’)。问题在于根据路径找得到对应文件，但是对应文件并没有默认export的参数。出错的地方在对应引入Cesium的地方：

import Cesium from "cesium/Cesium";

    打开node_modules/cesuim/Source/Cesium.js后发现，Cesium更新到1.63后它的类都是模块化导出，不再像以前一样导出cesium,再通过cesium调用。如：

export {
      default as ApproximateTerrainHeights } from './Core/ApproximateTerrainHeights.js';
export {
      default as ArcGISTiledElevationTerrainProvider } from './Core/ArcGISTiledElevationTerrainProvider.js';
export {
      default as ArcType } from './Core/ArcType.js';
export {
      default as AssociativeArray } from './Core/AssociativeArray.js';
export {
      default as AttributeCompression } from './Core/AttributeCompression.js';
export {
      default as AxisAlignedBoundingBox } from './Core/AxisAlignedBoundingBox.js';
export {
      default as BingMapsApi } from './Core/BingMapsApi.js';
export {
      default as BingMapsGeocoderService } from './Core/BingMapsGeocoderService.js';
export {
      default as BoundingRectangle } from './Core/BoundingRectangle.js';
export {
      default as BoundingSphere } from './Core/BoundingSphere.js';
export {
      default as BoxGeometry } from './Core/BoxGeometry.js';
export {
      default as BoxOutlineGeometry } from './Core/BoxOutlineGeometry.js';
export {
      default as Cartesian2 } from './Core/Cartesian2.js';

    所以不能像之前网上普遍的引入cesium做法一样,，需要按需引入，如：

import Viewer from "cesium/Cesium";
import UrlTemplateImageryProvider from "cesium/Cesium";
import createWorldTerrain from "cesium/Cesium";
import Cesium3DTileset from "cesium/Cesium";

    当然，如果你的项目已经使用低版本很久了，如果改成按需引入会引起较大改动，可以选择安装1.62版本。