Angular 每个 console.log 都来自 dev 中的 mainjs:1

Question

当使用

ng serve

启动我的应用程序时（现在是

ng serve -- -c deploy

，由于测试，每个 console.log 来自

main.js:1

或

polyfills.js:1

，独立于我调用 console.log() 的组件。

在另一个 stackoverflow 中（Angular 控制台仅从 main.js:1 和 polyfills.js:1 记录日志）有人写道，出现这种情况是因为 Angular 不构建开发，而是构建生产。

这是我的 angular.json

{
    "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
    "version": 1,
    "newProjectRoot": "projects",
    "projects": {
        "project": {
            "projectType": "application",
            "schematics": {
                "@schematics/angular:component": {
                    "style": "scss"
                }
            },
            "root": "",
            "sourceRoot": "src",
            "prefix": "app",
            "architect": {
                "build": {
                    "builder": "@angular-devkit/build-angular:browser",
                    "options": {
                        "outputPath": "dist/project",
                        "index": "src/index.html",
                        "main": "src/main.ts",
                        "polyfills": "src/polyfills.ts",
                        "tsConfig": "tsconfig.app.json",
                        "aot": true,
                        "assets": [
                            "src/favicon.ico",
                            "src/assets"
                        ],
                        "styles": [
                            "src/styles.scss",
                            "src/custom-theme.scss",
                            "./node_modules/primeicons/primeicons.css",
                            "src/css/md-theme/theme.css",
                            "primeng/resources/themes/md-dark-indigo/theme.css",
                            "./node_modules/primeng/resources/primeng.min.css",
                            "./node_modules/primeflex/primeflex.css"
                        ],
                        "scripts": [
                            "./node_modules/libsignal-protocol/dist/libsignal-protocol.js"
                        ]
                    },
                    "configurations": {
                        "production": {
                            "fileReplacements": [
                                {
                                    "replace": "src/environments/environment.ts",
                                    "with": "src/environments/environment.prod.ts"
                                }
                            ],
                            "optimization": true,
                            "outputHashing": "all",
                            "sourceMap": true,
                            "namedChunks": false,
                            "extractLicenses": true,
                            "vendorChunk": false,
                            "buildOptimizer": true,
                            "budgets": [
                                {
                                    "type": "initial",
                                    "maximumWarning": "2mb",
                                    "maximumError": "5mb"
                                },
                                {
                                    "type": "anyComponentStyle",
                                    "maximumWarning": "6kb",
                                    "maximumError": "10kb"
                                }
                            ]
                        }
                    }
                },
                "serve": {
                    "builder": "@angular-devkit/build-angular:dev-server",
                    "options": {
                        "browserTarget": "project:build"
                    },
                    "configurations": {
                        "production": {
                            "browserTarget": "project:build:production"
                        },
                        "deploy": {
                            "browserTarget": "project:build"
                        }
                    }
                },
                "extract-i18n": {
                    "builder": "@angular-devkit/build-angular:extract-i18n",
                    "options": {
                        "browserTarget": "project: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",
                        "assets": [
                            "src/favicon.ico",
                            "src/assets"
                        ],
                        "styles": [
                            "src/styles.scss"
                        ],
                        "scripts": []
                    }
                },
                "lint": {
                    "builder": "@angular-devkit/build-angular:tslint",
                    "options": {
                        "tsConfig": [
                            "tsconfig.app.json",
                            "tsconfig.spec.json",
                            "e2e/tsconfig.json"
                        ],
                        "exclude": [
                            "**/node_modules/**"
                        ]
                    }
                },
                "e2e": {
                    "builder": "@angular-devkit/build-angular:protractor",
                    "options": {
                        "protractorConfig": "e2e/protractor.conf.js",
                        "devServerTarget": "project:serve"
                    },
                    "configurations": {
                        "production": {
                            "devServerTarget": "project:serve:production"
                        }
                    }
                }
            }
        }
    },
    "defaultProject": "project"
}

Answer 1

在较新版本的 Angular 中，默认情况下以

prod

模式提供服务。您可以在

dev

中的

configurations

设置之后在

production

下创建

angular.json

设置。

    "dev": {
        "optimization": true,
        "outputHashing": "all",
        "sourceMap": false,
        "extractCss": true,
        "namedChunks": false,
        "aot": false,
        "extractLicenses": true,
        "vendorChunk": false,
        "buildOptimizer": true,
        "fileReplacements": [
          {
            "replace": "src/environments/environment.ts",
            "with": "src/environments/environment.dev.ts"
          }
        ]}

然后尝试运行服务命令

ng serve -c dev

Answer 2

如果您尝试了

dev

与

prod environment

相关的所有内容，但仍然无法正常工作：
正如@jna 所说的在此回复中，在 chrome devTools 中启用 JS 源映射可能会有所帮助。

另外：打开 devTools，按

F1

，然后选中 启用 JavaScript 源映射 选项。