【发布时间】：2017-08-19 05:40:02
【问题描述】：
升级我的 Angular2 项目到 Angular4 后，使用：
npm install @angular/common@latest @angular/compiler@latest @angular/compiler-cli@latest @angular/core@latest @angular/forms@latest @angular/http@latest @angular/platform-browser@latest @angular/platform-browser-dynamic@latest @angular/platform-server@latest @angular/router@latest @angular/animations@latest typescript@latest --save
我在使用ng build --prod 时收到以下错误：
ERROR in ./src/main.ts
Module not found: Error: Can't resolve './$$_gendir/app/app.module.ngfactory' in 'D:\workspace\MyProject\src'
@ ./src/main.ts 4:0-74
@ multi ./src/main.ts
没有--prod 标志，我不会收到任何错误。 stackoverflow 上有一些类似的问题，但没有任何可接受的答案，并且与升级到 Angular4 无关。
这是我的 package.json：
{
"name": "MyProject",
"version": "0.0.0",
"license": "MIT",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/animations": "^4.0.0",
"@angular/common": "^4.0.0",
"@angular/compiler": "^4.0.0",
"@angular/core": "^4.0.0",
"@angular/forms": "^4.0.0",
"@angular/http": "^4.0.0",
"@angular/platform-browser": "^4.0.0",
"@angular/platform-browser-dynamic": "^4.0.0",
"@angular/platform-server": "^4.0.0",
"@angular/router": "^4.0.0",
"angular-2-dropdown-multiselect": "^1.0.5",
"angular2-uuid": "^1.1.1",
"bootstrap": "^3.3.7",
"core-js": "^2.4.1",
"font-awesome": "^4.7.0",
"jquery": "^3.1.1",
"ng2-adal": "^0.3.0",
"rxjs": "^5.1.0",
"zone.js": "^0.8.4"
},
"devDependencies": {
"@angular/cli": "1.0.0",
"@angular/compiler-cli": "^4.0.0",
"@types/jasmine": "2.5.46",
"@types/node": "~7.0.11",
"codelyzer": "~2.0.0",
"jasmine-core": "~2.5.2",
"jasmine-spec-reporter": "~3.2.0",
"karma": "~1.5.0",
"karma-chrome-launcher": "~2.0.0",
"karma-cli": "~1.0.1",
"karma-coverage-istanbul-reporter": "^1.0.0",
"karma-jasmine": "~1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.1.0",
"ts-node": "~2.0.0",
"typescript": "^2.2.1",
"tslint": "~4.5.0"
}
}
编辑。这是使用 ng new 和新 CLI 创建的 project.json：
{
"name": "mypro",
"version": "0.0.0",
"license": "MIT",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/common": "^4.0.0",
"@angular/compiler": "^4.0.0",
"@angular/core": "^4.0.0",
"@angular/forms": "^4.0.0",
"@angular/http": "^4.0.0",
"@angular/platform-browser": "^4.0.0",
"@angular/platform-browser-dynamic": "^4.0.0",
"@angular/router": "^4.0.0",
"core-js": "^2.4.1",
"rxjs": "^5.1.0",
"zone.js": "^0.8.4"
},
"devDependencies": {
"@angular/cli": "1.0.0",
"@angular/compiler-cli": "^4.0.0",
"@types/jasmine": "2.5.38",
"@types/node": "~6.0.60",
"codelyzer": "~2.0.0",
"jasmine-core": "~2.5.2",
"jasmine-spec-reporter": "~3.2.0",
"karma": "~1.4.1",
"karma-chrome-launcher": "~2.0.0",
"karma-cli": "~1.0.1",
"karma-jasmine": "~1.1.0",
"karma-jasmine-html-reporter": "^0.2.2",
"karma-coverage-istanbul-reporter": "^0.2.0",
"protractor": "~5.1.0",
"ts-node": "~2.0.0",
"tslint": "~4.5.0",
"typescript": "~2.2.0"
}
}
有什么建议吗？
【问题讨论】：
-
您的
package.json与使用您的 CLI 版本的ng new相比如何？ -
@jonrsharpe 好点，我已经尝试过使用这些版本，但一直收到相同的错误消息。我将使用新的 CLI 版本发布使用 ng new 创建的 package.json。
-
您尝试此操作时构建是否有效：
ng build --prod --aot false? -
@R.Richards 是的，如果我添加
--aot false参数，构建工作不会出错。知道出了什么问题吗？ -
默认的构建编译模式现在是 AOT 编译，尽管 wiki 可能会在 angular.io 上说什么。您必须在代码中执行一些额外的步骤才能使 AOT 工作，或者通过将标志设置为 false 来避免它。 angular.io/docs/ts/latest/cookbook/aot-compiler.html。当我遇到 AOT 问题时，我通常会收到比您显示的更好的错误消息。至少是一个组件名称，或其他东西。
标签： angular typescript npm angular-cli angular4