我是Angular的新手，我的代码有一个我不理解的错误。我正在使用anguar（版本8）构建电子商务站点。当我执行“ ng build”以生成“ dist”文件夹时，该项目几乎完成。而且效果很好。但是，在项目未完成之后，我进行了一些修改以获取最终版本，但是当我执行“ ng build”时，现在它不再起作用。会产生错误：
ERROR in ./node_modules/core-js/modules/es.regexp.exec.js 1:3
Module parse failed: Unexpected character '' (1:3)
You may need an appropriate loader to handle this file type, currently no loaders are configured to process this file. See https://webpack.js.org/concepts#loaders
(Source code omitted for this binary file)
@ ./node_modules/core-js/es/regexp/index.js 3:0-39
@ ./node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/es5-polyfills.js
@ multi ./node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/es5-polyfills.js zone.js/dist/zone-legacy ./node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/jit-polyfills.js ./node_modules/@angular-devkit/build-angular/src/angular-cli-files/models/es5-jit-polyfills.js ./src/polyfills.ts
我不明白这是干什么的。有人可以帮帮我吗？谢谢!!