Angular 9 项目在生产环境中不起作用 [英] Angular 9 Project is not working in production environment

问题描述

我已将我们的 Angular 混合项目从 8 迁移到 9.迁移进行得很顺利，ng build/ng serve 像以前一样运行良好.

I have migrated our Angular hybrid project from 8 to 9. The migration went smooth and ng build / ng serve works well like it did before.

真正的问题，我不知道如何开始工作，是在我构建了用于生产的应用程序之后 (ng build --prod).项目登陆页面完全空白，没有JS错误，没有控制台警告.看起来 AppModule 没有加载?我们唯一需要做的更改与 main.aot.ts 文件相关，我们删除了该文件，因为它不再适用于 IVY 编译器.

The real problem, where I don't know how to start working on it, is after I build the app for production (ng build --prod). The landing page of the project is completely blank, no JS errors, no console warnings. It looks like the AppModule is not loaded? The only change we had to do was related to main.aot.ts file, we removed that file as it's no longer applicable to IVY compiler.

您过去可能拥有的任何相关经验都会对我有所帮助，非常感谢！

Any relevant experience you might have in the past will help me, thanks a lot!

main.ts 看起来像这样

main.ts looks like this

import {enableProdMode, StaticProvider} from '@angular/core';
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app/app.module';
import { environment } from './environments/environment';
import {downgradeModule} from "@angular/upgrade/static";

if (environment.production) {
  enableProdMode();
}
declare var angular: any;

const bootstrapFn = (extraProviders: StaticProvider[]) => {
  const platformRef = platformBrowserDynamic(extraProviders);
  return platformRef.bootstrapModule(AppModule);
};
const downgradedModule = downgradeModule(bootstrapFn);
angular.bootstrap(document.getElementById('app-root'), ['angularJSModule', downgradedModule], { strictDi: true });

main.aot.ts (在 Angular9 中移除)

main.aot.ts (Removed at Angular9)

import {enableProdMode, StaticProvider} from '@angular/core';
import { platformBrowser } from '@angular/platform-browser';
import {AppModuleNgFactory} from './app/app.module.ngfactory';
import { environment } from './environments/environment';
import {downgradeModule} from "@angular/upgrade/static";

if (environment.production) {
  enableProdMode();
}
declare var angular: any;

const bootstrapFn = (extraProviders: StaticProvider[]) => {
  const platformRef = platformBrowser(extraProviders);
  return platformRef.bootstrapModuleFactory(AppModuleNgFactory);
};
const downgradedModule = downgradeModule(bootstrapFn);
angular.bootstrap(document.getElementById('app-root'), ['angularJSModule', downgradedModule], { strictDi: true });

tsconfig.json

tsconfig.json

{
  "compileOnSave": true,
  "compilerOptions": {
    "baseUrl": "./",
    "outDir": "./dist/out-tsc",
    "sourceMap": true,
    "declaration": false,
    "downlevelIteration": true,
    "experimentalDecorators": true,
    "module": "esnext",
    "moduleResolution": "node",
    "importHelpers": true,
    "target": "es2015",
    "typeRoots": [
      "node_modules/@types"
    ],
    "lib": [
      "es2018",
      "dom"
    ],
    "types": ["angular"]
  },
  "angularCompilerOptions": {
    "fullTemplateTypeCheck": true,
    "strictInjectionParameters": true
  }
}

tsconfig.app.json

tsconfig.app.json

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/app",
    "types": ["angular"]
  },
  "files": [
    "src/main.ts",
    "src/polyfills.ts"
  ],
  "include": [
    "src/**/*.d.ts"
  ],
  "exclude": [
    "src/test.ts",
    "src/**/*.spec.ts"
  ]
}

package.json

package.json

{
  "name": "myproj",
  "version": "4.5.0",
  "start": "ng serve -aot",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~9.0.5",
    "@angular/cdk": "~9.1.1",
    "@angular/common": "~9.0.5",
    "@angular/compiler": "~9.0.5",
    "@angular/core": "~9.0.5",
    "@angular/fire": "^5.4.2",
    "@angular/forms": "~9.0.5",
    "@angular/material": "^9.1.1",
    "@angular/platform-browser": "~9.0.5",
    "@angular/platform-browser-dynamic": "~9.0.5",
    "@angular/router": "~9.0.5",
    "@angular/upgrade": "^9.0.5",
    "@ng-idle/core": "^8.0.0-beta.4",
    "@ng-idle/keepalive": "^8.0.0-beta.4",
    "@uirouter/angular": "^6.0.1",
    "@uirouter/angular-hybrid": "^10.0.1",
    "@uirouter/angularjs": "^1.0.25",
    "@uirouter/core": "^6.0.4",
    "@uirouter/rx": "^0.6.5",
    "angular": "^1.7.9",
    "foundation-sites": "^6.6.1",
    "install": "^0.13.0",
    "ng-block-ui": "^2.1.8",
    "ngx-cookie-service": "^2.4.0",
    "ngx-foundation": "^1.0.8",
    "ngx-pendo": "^1.2.3",
    "ngx-perfect-scrollbar": "^8.0.0",
    "npm": "^6.14.2",
    "rxjs": "~6.5.4",
    "tslib": "^1.10.0",
    "upgrade": "^1.1.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.900.5",
    "@angular/cli": "~9.0.5",
    "@angular/compiler-cli": "~9.0.5",
    "@angular/language-service": "~9.0.5",
    "@types/angular": "^1.6.57",
    "@types/jasmine": "~3.3.8",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "^12.11.1",
    "codelyzer": "^5.1.2",
    "jasmine-core": "~3.4.0",
    "jasmine-spec-reporter": "~4.2.1",
    "karma": "~4.1.0",
    "karma-chrome-launcher": "~2.2.0",
    "karma-coverage-istanbul-reporter": "~2.0.1",
    "karma-jasmine": "~2.0.1",
    "karma-jasmine-html-reporter": "^1.5.2",
    "protractor": "^5.4.3",
    "ts-node": "~7.0.0",
    "tslint": "~5.15.0",
    "typescript": "~3.7.5"
  }
}

推荐答案

我遇到了同样的问题，就我而言，它是在启用严格模式后发生的.我通过从 package.json

I had the same issue, in my case it occurred after enabling strict mode. I fixed it by removing "sideEffects": false from package.json

这篇关于Angular 9 项目在生产环境中不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！