Angular 18迁移新构建系统后出现Http解析失败错误

问题背景 #

将作为应用依赖库的项目从Angular 17升级到18，执行以下更新命令完成包升级与新构建系统迁移：

npm i typescript@5.5.4
ng update @angular/core@18 ng update @angular/cli@18 
ng update @angular-eslint/schematics@18 ng update @angular/material@18

运行库时浏览器控制台出现HTTP解析错误，导致数据无法正常显示：

Http failure during parsing for http://localhost:4200/api/dashboard

{
    "headers": {
        "normalizedNames": {},
        "lazyUpdate": null
    },
    "status": 200,
    "statusText": "OK",
    "url": "http://localhost:4200/api/dashboard",
    "ok": false,
    "name": "HttpErrorResponse",
    "message": "Http failure during parsing for http://localhost:4200/api/dashboard",
    "error": {
        "error": {},
        "text": "<!doctype html>\r\n<html lang=\"en\">\r\n<head>\n  <script type=\"module\" src=\"/@vite/client\"></script>\n\r\n  <meta charset=\"utf-8\">\r\n  <title>WidgetsApp</title>\r\n  <base href=\"/\">\r\n\r\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1\">\r\n  <link rel=\"icon\" type=\"image/x-icon\" href=\"favicon.ico\">\r\n  <link href=\"https://fonts.googleapis.com/icon?family=Material+Icons\" rel=\"stylesheet\">\r\n<link rel=\"stylesheet\" href=\"styles.css\"></head>\r\n<body>\r\n  <app-root></app-root>\r\n<script src=\"polyfills.js\" type=\"module\"></script><script src=\"scripts.js\" defer></script><script src=\"main.js\" type=\"module\"></script></body>\r\n</html>\r\n"
    }
}

代码细节 #

获取Mock数据的方法仅打印第一个console.log，tap操作符中的日志未执行：

const httpOptions = {
  headers: new HttpHeaders({
    'Content-Type': 'application/json',
    'ngsw-bypass': 'true'
  })
};
      
getAllDashboard(): Observable<Dashboard[]> {
        const url = 'api/dashboard';
        console.log("TEST (DashboardAPI) getAllDashboard");
        return this._http.get<Dashboard[]>(url, httpOptions)
          .pipe(
            tap(dashboards => {
              console.log("TEST (DashboardAPI) getAllDashboard", dashboards);
            }),
            catchError(this._handleError<Dashboard[]>(`getAllDashboard url=${url}`))
          );
      }

实现InMemoryDbService的Mock服务在库自身运行正常，但在依赖该包的其他项目中失效：

export class WidgetInMemoryDataService implements InMemoryDbService {

  createDb() {
        const dashboardConfig = [
            {
                id: '00000000-0000-0000-0000-000000000000',
                name: 'Default',
                creationDate: new Date(Date.now()),
                createdById: '00000000-0000-0000-0000-000000000000',
                updatedDate: new Date(Date.now()),
                updatedById: '00000000-0000-0000-0000-000000000000',
            }
        ];
    return { dashboard: dashboardConfig };
  }
}

已在模块的imports中配置该服务：

HttpClientInMemoryWebApiModule.forRoot(WidgetInMemoryDataService, {
    dataEncapsulation: false,
    passThruUnknownUrl: true,
}),

尝试过的无效方案 #

• 在httpOptions中添加responseType: 'text'、responseType: 'text' as 'json'，问题未解决
• 定位到问题与HttpClientModule替换为provideHttpClient(withInterceptorsFromDi())相关：使用旧的HttpClientModule时Mock服务正常，而另一个依赖包@my-lib/dashboards使用新配置却能正常运行

项目依赖配置（package.json） #

{
  "name": "widgets-app",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "jest --coverage --verbose --silent",
    "lint": "ng lint",
    "build_prod": "ng build widgets --configuration production",
    "pack": "cd dist/widgets && npm pack",
    "package": "npm run build_prod && npm run pack",
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^18.2.7",
    "@angular/cdk": "^18.2.7",
    "@angular/common": "^18.2.7",
    "@angular/compiler": "^18.2.7",
    "@angular/core": "^18.2.7",
    "@angular/forms": "^18.2.7",
    "@angular/material": "^18.2.7",
    "@angular/material-moment-adapter": "^18.2.7",
    "@angular/platform-browser": "^18.2.7",
    "@angular/platform-browser-dynamic": "^18.2.7",
    "@angular/router": "^18.2.7",
    "@asymmetrik/ngx-leaflet": "^18.0.1",
    "@mylib/dashboards": "file:../MyLib.Dashboards/dist/dashboards/mylib-dashboards-18.0.0.tgz",
    "@mylib/layout": "^18.0.2",
    "@ngx-translate/core": "^15.0.0",
    "@ngx-translate/http-loader": "^8.0.0",
    "@syncfusion/ej2-angular-pivotview": "^27.1.48",
    "angular-in-memory-web-api": "0.18.0",
    "echarts": "^5.4.3",
    "leaflet": "^1.9.4",
    "leaflet.markercluster": "^1.5.3",
    "moment": "^2.29.4",
    "ng-dynamic-component": "^10.7.0",
    "ngx-daterangepicker-material": "^6.0.4",
    "ngx-echarts": "^18.0.0",
    "ngx-skeleton-loader": "^9.0.0",
    "ngx-translate-multi-http-loader": "^18.1.0",
    "rxjs": "^7.8.1",
    "uuid": "^9.0.0",
    "zone.js": "~0.14.10"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^18.2.7",
    "@angular-eslint/builder": "^18.3.1",
    "@angular-eslint/eslint-plugin": "^18.3.1",
    "@angular-eslint/eslint-plugin-template": "^18.3.1",
    "@angular-eslint/schematics": "^18.3.1",
    "@angular-eslint/template-parser": "^18.3.1",
    "@angular/cli": "^18.2.7",
    "@angular/compiler-cli": "^18.2.7",
    "@ngneat/spectator": "^19.0.0",
    "@types/jest": "^29.5.13",
    "@types/leaflet": "^1.9.12",
    "@typescript-eslint/eslint-plugin": "^8.6.0",
    "@typescript-eslint/parser": "^8.6.0",
    "eslint": "^9.12.0",
    "eslint-config-prettier": "^9.1.0",
    "eslint-plugin-prettier": "^5.2.1",
    "jest": "^29.7.0",
    "jest-auto-spies": "^3.0.0",
    "jest-preset-angular": "^14.2.4",
    "jest-sonar": "^0.2.16",
    "ng-mocks": "^14.13.1",
    "ng-packagr": "^18.2.1",
    "prettier": "^3.3.3",
    "typescript": "~5.5.4"
  }
}

内容的提问来源于stack exchange，提问作者Ihescode