将 Angular 11 应用程序升级到 Angular 12 时面临的问题
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【中文标题】将 Angular 11 应用程序升级到 Angular 12 时面临的问题【英文标题】：Facing issue while upgrading Angular 11 app to Angular 12 【发布时间】：2021-09-06 21:35:26 【问题描述】：当我们尝试将 Angular 11 应用程序（单一 SPA 微前端）更新到 Angular 12 时，我们面临以下问题。
尝试运行此应用时控制台出错：
An unhandled exception occurred: Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
output 选项告诉 webpack 如何将编译后的文件写入磁盘。
有关详细信息，请参阅“C:\Users\newUser\AppData\Local\Temp\ng-UOeNLu\angular-errors.log”。
包.json：
"name": "my-app",
"version": "0.0.0",
"scripts":
"ng": "ng",
"start": "npm run serve",
"devstart": "ng serve --aot=false",
"build": "npm run build",
"test": "ng test"
,
"private": true,
"dependencies":
"@angular/animations": "~12.0.5",
"@angular/cdk": "^12.0.5",
"@angular/common": "~12.0.5",
"@angular/compiler": "~12.0.5",
"@angular/core": "~12.0.5",
"@angular/forms": "~12.0.5",
"@angular/material": "^12.0.5",
"@angular/platform-browser": "~12.0.5",
"@angular/platform-browser-dynamic": "~12.0.5",
"@angular/router": "~12.0.5",
"@material-extended/mde": "^3.0.3",
"bootstrap-4-grid": "^3.4.0",
"highcharts": "^8.1.2",
"html2canvas": "^1.0.0-rc.7",
"htmldiff-js": "^1.0.5",
"http-server": "^0.12.3",
"jquery": "^3.5.1",
"jspdf": "^2.1.1",
"mat-table-exporter": "^9.0.0",
"ngx-mat-select-search": "^2.1.2",
"ng2-file-upload": "^1.4.0",
"ngx-matomo": "^0.1.4",
"ngx-summernote": "^0.8.0",
"ngx-order-pipe": "^2.0.4",
"rxjs": "~6.5.4",
"single-spa": ">=4.0.0",
"single-spa-angular": "5.0.1",
"tslib": "^2.0.0",
"summernote": "^0.8.18",
"zone.js": "~0.11.4"
,
"devDependencies":
"@angular-builders/custom-webpack": "9.2.1-beta.0",
"@angular-devkit/build-angular": "~0.1102.13",
"@angular/cli": "~12.0.5",
"@angular/compiler-cli": "~12.0.5",
"@angular/language-service": "~12.0.5",
"@types/node": "^12.11.1",
"@types/jasmine": "~3.6.0",
"@types/jasminewd2": "~2.0.3",
"codelyzer": "^6.0.0",
"jasmine-core": "~3.6.0",
"jasmine-spec-reporter": "~5.0.0",
"karma": "~5.0.0",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage-istanbul-reporter": "~3.0.2",
"karma-jasmine": "~4.0.0",
"karma-jasmine-html-reporter": "^1.5.0",
"protractor": "~7.0.0",
"ts-node": "~8.3.0",
"tslint": "~6.1.0",
"typescript": "~4.2.4"
Angular.json：
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects":
"my-app":
"projectType": "application",
"schematics":
"@schematics/angular:component":
"style": "scss"
,
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect":
"build":
"builder": "@angular-builders/custom-webpack:browser",
"options":
"outputPath": "dist/my-app",
"index": "src/index.html",
"main": "src/main.single-spa.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"aot": true,
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"./node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
"./node_modules/bootstrap-4-grid/scss/grid.scss",
"src/styles.scss",
"node_modules/summernote/dist/summernote-lite.min.css"
],
"scripts": [
"node_modules/jquery/dist/jquery.min.js",
"node_modules/summernote/dist/summernote-lite.min.js"
],
"customWebpackConfig":
"path": "extra-webpack.config.js",
"libraryName": "my-app",
"libraryTarget": "umd"
,
"configurations":
"production":
"fileReplacements": [
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
],
"optimization": true,
"outputHashing": "none",
"sourceMap": false,
"extractCss": true,
"namedChunks": false,
"extractLicenses": true,
"vendorChunk": false,
"buildOptimizer": true,
"budgets": [
"type": "initial",
"maximumWarning": "2mb",
"maximumError": "5mb"
,
"type": "anyComponentStyle",
"maximumWarning": "6kb",
"maximumError": "20kb"
]
,
"serve":
"builder": "@angular-builders/custom-webpack:dev-server",
"options":
"browserTarget": "my-app:build"
,
"configurations":
"production":
"browserTarget": "my-app:build:production"
,
"extract-i18n":
"builder": "@angular-devkit/build-angular:extract-i18n",
"options":
"browserTarget": "my-app: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": [
"./node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
"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": "my-app:serve"
,
"configurations":
"production":
"devServerTarget": "my-app:serve:production"
,
"defaultProject": "my-app",
"cli":
"analytics": false
```
【问题讨论】：
这个回答***.com/a/42068953/9721056能解决你的问题吗？ 你能发布你的 angular.json 和 package.json 吗？您是先升级全局安装，然后在 package.json 所在的项目根目录运行 ng update @angular/core @angular/cli 吗？ @cklimowski 我已编辑问题以添加 package.json 和 angular.json 您是否首先使用 npm i -g @angular/cli@12.0.5 升级全局 @angular/cli 安装，然后运行 ng update @angular/core @angular/cli？ @cklimowski 是的，我先升级全局 cli，然后运行 ng update 【参考方案1】：一些建议：
如果您想使用 angular-cli 进行平滑迁移，请摆脱自定义 webpack。 请勿使用任何库的 beta 版本，除非您正在试验或测试有关它的内容。自定义 webpack builder 的版本是 beta（检查 package.json）。 如果你真的需要一个自定义的 webpack 构建器然后去官方网站更新你的配置。每次更新 Angular 时更新您的自定义 webpack 依赖项。 不要手动升级 Angular，而是按照https://update.angular.io/ 的说明进行操作。@angular-devkit/build-angular 的版本似乎不正确。
【讨论】：
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