当我使用Angular CLI（8.0.0）生成项目时，运行ng serve，在Internet Explorer中打开应用程序，然后出现空白屏幕。
我看了看polyfills.ts文件，并取消了以下几行的注释：
import 'classlist.js';
import 'web-animations-js';
我也删除了所有core.js导入，因为Angular 8直接支持core.js 3.0。
我也跑了npm i。
package.json：
"dependencies": {
"@angular/animations": "~8.0.0",
"@angular/common": "~8.0.0",
"@angular/compiler": "~8.0.0",
"@angular/core": "~8.0.0",
"@angular/forms": "~8.0.0",
"@angular/platform-browser": "~8.0.0",
"@angular/platform-browser-dynamic": "~8.0.0",
"@angular/router": "~8.0.0",
"classlist.js": "^1.1.20150312",
"rxjs": "~6.4.0",
"tslib": "^1.9.0",
"web-animations-js": "^2.3.1",
"zone.js": "~0.9.1"
},
"devDependencies": {
"@angular-devkit/build-angular": "~0.800.0",
"@angular/cli": "~8.0.0",
"@angular/compiler-cli": "~8.0.0",
"@angular/language-service": "~8.0.0",
"@types/node": "~8.9.4",
"@types/jasmine": "~3.3.8",
"@types/jasminewd2": "~2.0.3",
"codelyzer": "^5.0.0",
"jasmine-core": "~3.4.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.1.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~2.0.1", …