Angular 9 Uncaught ReferenceError：regeneratorRuntime 未定义

Question

我创建了一个新的 angular 应用程序，通过将 dist 文件夹中的所有内容复制到 angular 应用程序的资产文件夹中并在 index.html 中引用它，我导入了一个 3rd 方应用程序 (svgedit)。现在我收到这个错误

未捕获的 ReferenceError：未定义 regeneratorRuntime

我已经搜索并看到了包含 babel-polyfill 等的建议，但一直无法解决这个问题。

这是我的设置，Angular 9.1.7

套餐

@angular-devkit/architect         0.901.7
@angular-devkit/build-angular     0.901.7
@angular-devkit/build-optimizer   0.901.7
@angular-devkit/build-webpack     0.901.7 
@angular-devkit/core              9.1.7
@angular-devkit/schematics        9.1.7
@angular/cli                      9.1.7
@ngtools/webpack                  9.1.7
@schematics/angular               9.1.7
@schematics/update                0.901.7
rxjs                              6.5.5
typescript                        3.8.3
webpack                           4.42.0

package.json：

{
  "name": "scada",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~9.1.0",
    "@angular/common": "~9.1.0",
    "@angular/compiler": "~9.1.0",
    "@angular/core": "~9.1.0",
    "@angular/forms": "~9.1.0",
    "@angular/platform-browser": "~9.1.0",
    "@angular/platform-browser-dynamic": "~9.1.0",
    "@angular/router": "~9.1.0",
    "@babel/polyfill": "^7.10.1",
    "jquery": "^3.5.1",
    "rxjs": "~6.5.4",
    "svgedit": "^5.1.0",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.901.0",
    "@angular/cli": "~9.1.0",
    "@angular/compiler-cli": "~9.1.0",
    "@angular/language-service": "~9.1.0",
    "@types/node": "^12.11.1",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "codelyzer": "^5.1.2",
    "jasmine-core": "~3.5.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.4.1",
    "karma-chrome-launcher": "~3.1.0",
    "karma-coverage-istanbul-reporter": "~2.1.0",
    "karma-jasmine": "~3.0.1",
    "karma-jasmine-html-reporter": "^1.4.2",
    "protractor": "~5.4.3",
    "ts-node": "~8.3.0",
    "tslint": "~6.1.0",
    "typescript": "~3.8.3"
  }
}

Answer 1

当我在我的 angular 应用程序中使用 contentful 时，我遇到了同样的错误。您可以将这些行添加到您的 app.component 中：

import "core-js/stable";
import "regenerator-runtime/runtime";

我在这里找到它：https : //github.com/zloirock/core-js#babelpolyfill