Token authentification => how to catch 401/403 errors?

[alexbran8]

Using token as auth method, how would you catch 401 or 403 errors in order to refresh the token?

This is how we use PouchDB:

       const remoteDB = (authToken: string) => {
            return new PouchDB(remoteDBURL, {
              headers: {
                Authorization: `Bearer ${authToken}`,
              }
            });
          };

config:

live: true,
retry: true,

Based on what I've tried so far, these errors are not emitted on the .onError callback.

Any help / ideas would be very appreciated.

[SourceR85]

I've done this via fetch option:

remoteDB = new PouchDB(remoteDBURL, {
  fetch(request, opts) {
    return fetch(request, opts).then(async (response) => {
      if (response.status !== 401) return response

      // throw something on re-auth error
      authToken = await yourAuthCheckAndUpdateLogic()
      return fetch(request, { ...opts,
        headers: { ...opts.headers,
          Authorization: `Bearer ${authToken}`
        }
      })
    })
  },
  // other options
});