problems with RxJS/operators

Hello guys! I try to use rxjs with operators
I try to do that with rxjs version 6.6.7

for import modules I use this code

import {default as rxjs} from “rxjs”;
import {default as rxjs_operators} from “rxjs/operators”;

const {range} = rxjs;
const {map, filter} = rxjs_operators;

and in start function of script I try to run this code

range(1, 200)
.pipe(
filter(x => x % 2 === 1),
map(x => x + x)
)
.subscribe(x => console.log(x));

but I get error

Failed to resolve rxjs/operators from file:///<my_project_path>/assets/test.ts, treat it as external dependency.
Which is caused by: Error: Directory import is not supported

Could you explain how I can managed in my situation?

P.S. if I try to use rxjs version 7.1.0 I get another error

[Scene] Packed resource node_modules/rxjs/dist/esm5/index.js not found.
[Scene] Packed resource node_modules/rxjs/dist/esm5/operators/index.js not found.
but I checked that paths of files exists.

P.P.S. I rad this topic but, I can’t find out resolution of my problem. Thank you!