javascript - Angular - Unable to wait for observable subscribe to finish to execute rest of the code in http interceptor

Question

This question already has an answer here: question from:https://stackoverflow.com/questions/65940720/angular-unable-to-wait-for-observable-subscribe-to-finish-to-execute-rest-of-t

Answer 1

 let token = localStorage.getItem('token');
 // if token is not valid or not set
  if ((this.jwtHelper.isTokenExpired(token) || token === null)) {
    if (token_refresh !== null) {
      // if token_refresh exists and is valid
      this.authService.refreshToken(token_refresh).subscribe(
        response => {
          localStorage.setItem('token', response.token);
          token = response.token;
          request = request.clone({
             setHeaders: {
                Authorization: `Bearer ${token}`
             }
          });
        }
      );
    } else {
      // if no token_refresh exists or is expired
      this.router.navigate(['/register']);
    }
  } else {
     request = request.clone({
       setHeaders: {
         Authorization: `Bearer ${token}`
     }
  });
  }

You can an else block to execute if you don't need to refresh the token, and add that code block again after you get a fresh token.