npm install -g @angular/cli
ng update @angular/core@latest
npm install --save-dev webpack@latest webpack-cli@latest
import "core-js/features/reflect"; import "zone.js/dist/zone";
"builder": "@angular-devkit/build-angular:browser", "options": { "allowedCommonJsDependencies": ["lodash"] }
ng serve
这将解决Angular应用程序的polyfills问题,并重新启动应用程序。