I am uncertain about how to interpret this method signature

Can you help me determine the correct method signature for handleError?

The linter tslint is indicating an error message that says

expected call-signature: 'handleError' to have a typedef (typedef)
.

Here is the code snippet in question:

import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Observable, of } from 'rxjs';

private handleError<T>(result?: T) {
  return (error: any): Observable<T> => {
    console.error(error);
    return of(result as T);
  };
}

I originally thought it was returning Observable<T>, but that appears to be incorrect. Then I considered if it might be a method that returns

(error: any): Observable<T>
, yet that also does not seem to be the answer.

Answer №1

Finally solved the problem.

private handleError<T>(result?: T): (error: any) => Observable<T> {

I kept mistakenly inputting => as a : in the line above. Appreciate the help from everyone.

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