rxjs /运算符：找不到模块

Question

I import rxjs/operators like this:

import { map } from 'rxjs/operators';

But that gives me the following error:

map is declared but it values is never read. Cannot find module rxjs/operators

in Angular.

Please help.

Answer 1

You are using rxjs version 5.0.0 so you have to import map operator like this ::

import "rxjs/add/operator/map";

If You are using rxjs version 6.0.0 then you can import like this ::

 import { map } from 'rxjs/operators'

And if you want to use first method with rxjs version 6.0.0 then you have to install rxjs compat as mentioned in comment by @Sachilla