angular – ngc：错误：从导出的类返回公共方法的类型具有或正在使用来自外部模块的名称’Observable’但无法命名

2019年7月20日 319次阅读

码

this.store.select(state => state.user).subscribe(u => user = u).unsubscribe();

https://gist.github.com/nottinhill/eac309590096cc6f1b910f40a1b2f0c3
https://gist.github.com/nottinhill/5dc4026007a0c3ea3a4e0c15c0adfe05

错误

[02:25:41]  ngc: Error: Error at /Users/tyrion/devel/saveup-front/.tmp/+purchase/shared/purchase-service/purchase.service.ts:22:12: Return type of public method from exported class has or is using name 'Observable' from external module "/Users/tyrion/devel/saveup-front/node_modules/rxjs/Observable" but cannot be named.

问题

强类型在哪里输入Observable？我无法用我迄今为止所尝试的内容进行编译.

最佳答案 嗯,这有点奇怪,但我设法用私有方法在服务中修复它：

你在哪里放置this.store.select(state => state.user)方法,如果你使用来自“@ angular / http”的import {Http};确保你在附近做了些什么：

import {Injectable} from '@angular/core';
import {Http, Response} from "@angular/http";
import 'rxjs/add/operator/catch';
import 'rxjs/add/operator/map';
import {Observable} from "rxjs";


@Injectable()
export class MyService {
  static get parameters() {
    return [[Http]];
  }

  constructor(private http: Http) {

  }

  getList() {
    var url = 'http://<URL_HERE>';
    var response = this.http.get(url).map(this.extractData).catch(this.handleError);

    console.log(response);
    return response;
  }


  private extractData(res: Response) {
    let body = res.json();
    return body || { };
  }

  private handleError (error: any) {
    let errMsg = (error.message) ? error.message :
      error.status ? `${error.status} - ${error.statusText}` : 'Server error';
    console.error(errMsg); // log to console instead
    return Observable.throw(errMsg);
  }
}

我添加了这个方法extractData以使其工作,如果你能提供你的服务将更好地找出问题.

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