angular - 错误 TS2339 : Property 'do' does not exist on type 'Observable<

Question

尝试从 angular 5.2 升级到 angular 6.0.0，我们遇到了以下错误:

error TS2339: Property 'do' does not exist on type 'Observable<

任何想法为什么？

我们使用的代码是

return this.httpClient.post<x>(`${environment.apiUrl}auth/x/`,
  this.abcd,
  httpOptions)
  .do(x1 => this.subject.next(x1))

Answer 1

链操作符不久前被弃用，现在它们已被删除。使用可管道操作符，在本例中 tap替换 do .

import { tap } from 'rxjs/operators';

return this.httpClient.post(ˋ${environment.apiUrl}auth/x/ˋ, this.abcd, httpOptions)
.pipe(
    tap(x1 => this.subject.next(x1))
);