rxjs-websocket-2.js

import { tap } from 'rxjs/operators';
import { webSocket } from 'rxjs/webSocket';

const wsSubjec2$ = webSocket({
  url: 'wss://www.gasnow.org/ws/gasprice',
});

wsSubject$
    .pipe(
      tap((data) => console.log(data)),
    )
    .subscribe();