Angular Chrome 开发工具扩展错误：“Angular DevTools 仅支持开发版本。”

Question

我正在尝试使用适用于 Chrome 扩展的 Angular DevTools 来调试 Angular 应用程序，但是当我尝试使用它时出现错误：

我们检测到一个使用生产配置构建的应用程序。Angular DevTools 仅支持开发构建。

我可以将项目恢复到开发模式吗？

Answer 1

您可能缺少应用程序的开发配置。

在 angular.json 中导航至architect-> build->configurations并在生产构建的定义下方添加这些行：

"configurations": {
  "production": {
    // already there!
  },
  "development": { // this is new!
    "buildOptimizer": false,
    "optimization": false,
    "vendorChunk": true,
    "extractLicenses": false,
    "sourceMap": true,
    "namedChunks": true
  }
},
"defaultConfiguration": "production"

要在开发模式下运行构建，只需键入下一个命令：ng build --configuration development。

Answer 2

我已将所有这些设置和配置都放在angular.json. 对我来说，问题如下：

主要.ts：

if (environment.production) {
  enableProdMode(); // <-- here
}

platformBrowserDynamic()
  .bootstrapModule(AppModule)
  .catch(err => console.error(err));

显然，我在过去的某个时刻更改了文件production的属性，即使在开发模式下也将其设置为。environment.tsproductiontrue

改回来false最终为我解决了这个问题。

Answer 3

顺便说一句：一个完整​​的工作配置（下文进一步），如果配置不是问题，那么：

• 更新铬，
• 删除并重新安装扩展
• （并且在其配置中也允许访问文件 URL）
• 从eg开始ng serve（如果是 mono repo npx nx serve <projectname>）

然后你会看到类似的东西（取决于你自己的配置）：

** Angular Live Development Server is 
listening on localhost:4200, 
open your browser on http://localhost:4200/ **

• 在浏览器中打开它
• 打开 Chrome/Firefox/.. DevTools
• 转到角度部分

你应该看到：

最后但并非最不重要的一点：完整配置的示例：

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "ng14.0.2": {
      "projectType": "application",
      "schematics": {
        "@schematics/angular:component": {
          "style": "scss"
        }
      },
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/ng14.0.2",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "inlineStyleLanguage": "scss",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.scss"
            ],
            "scripts": []
          },
          "configurations": {
            "production": {
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "500kb",
                  "maximumError": "1mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "2kb",
                  "maximumError": "4kb"
                }
              ],
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "outputHashing": "all"
            },
            "development": {
              "buildOptimizer": false,
              "optimization": false,
              "vendorChunk": true,
              "extractLicenses": false,
              "sourceMap": true,
              "namedChunks": true
            }
          },
          "defaultConfiguration": "production"
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "configurations": {
            "production": {
              "browserTarget": "ng14.0.2:build:production"
            },
            "development": {
              "browserTarget": "ng14.0.2:build:development"
            }
          },
          "defaultConfiguration": "development"
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "ng14.0.2:build"
          }
        },
        "test": {
          "builder": "@angular-devkit/build-angular:karma",
          "options": {
            "main": "src/test.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.spec.json",
            "karmaConfig": "karma.conf.js",
            "inlineStyleLanguage": "scss",
            "assets": [
              "src/favicon.ico",
              "src/assets"
            ],
            "styles": [
              "src/styles.scss"
            ],
            "scripts": []
          }
        }
      }
    }
  }
}