Angular 5 个构建错误 "Property does not exist on type"

Question

import { environment } from '../../environments/environment';
import { Headers } from '@angular/http';

@Injectable()
export class ProjectsService {

  private _wpBase = environment.wpBase;

ng build --prod 给我一个错误：

ERROR in src/app/projects/projects.service.ts(11,33): error TS2339: Property 'wpBase' does not exist on type '{ production: boolean; }'.

我该如何解决这个问题？该应用程序运行良好，我正在尝试使用本指南实现 Angular 通用：https://github.com/angular/angular-cli/wiki/stories-universal-rendering

Answer 1

您可能忘记在 environment.prod.ts...

中设置 wpBase 属性

检查你的 environment.ts 和 environment.prod.ts 看看你是否设置了 wpBase正确。

Answer 2

快速解决方法是将环境键入任意：

@Injectable()
export class ProjectsService {
  private _wpBase = (environment as any).wpBase;
}

正确的解决方法是为您的环境对象添加类型定义。

interface AppEnv {
   production: boolean;
   wpBase: // whatever is the correct type
}
export const environment: AppEnv = {
  production: false,
  wpBase: // whatever is the value
};

Angular 5 个构建错误 "Property does not exist on type"

Angular 5 build error "Property does not exist on type"

angular

build

universal