The pipe property cannot be accessed for the specified type "OperatorFunction<unknown, [unknown, boolean, any]>"

I have set up a data subscription that I want to utilize through piping, but for some reason it's not working as expected. The error message I'm receiving is:

The property pipe is not available for type "OperatorFunction<unknown, [unknown, boolean, any]>"

This is the code snippet in question: auth.service

authenticationState = new BehaviorSubject(false);

checkToken() {
    this.storage.get(TOKEN_KEY).then(access => {
    if (access) {
        this.user = this.helper.decodeToken(access);
        this.authenticationState.next(true);
    }
});

The issue arises in page.ts when trying to use the pipe method:

ngOnInit() {
    this.subscription = combineLatest (
    this.authService.authenticationState, 
    from(this.storage.get(USER_ID)))
        .pipe(
            switchMap(
                ([isAuthenticated, id]) => isAuthenticated 
                    ? this.userService.getUserDetails(id) 
                    : of(null)
                )
        ).subscribe(result => {
            if (result) {
                this.information = result;
                console.log(this.information);
            } else {
            }
        },
        error => {}
    );
}

Answer №1

An issue is indicating that you may be importing combineLatest from the incorrect location. Make sure to import combineLatest from rxjs instead of rxjs/operators. It is essential to use the version of combineLatest related to "observable creation," which can be found in rxjs.

Furthermore, you do not require from within combineLatest when dealing with the Storage, as combineLatest also accepts Promises.

To resolve this, update your import statement for combineLatest to:

import { combineLatest } from 'rxjs';

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