import Finch from '@tryfinch/finch-api';

const client = new Finch({
  clientId: '4ab15e51-11ad-49f4-acae-f343b7794375',
  clientSecret: 'My Client Secret',
});

const response = await client.connect.sessions.reauthenticate({ connection_id: 'connection_id' });

console.log(response.session_id);

{
  "session_id": "550e8400-e29b-41d4-a716-446655440000",
  "connect_url": "https://connect.tryfinch.com/authorize?session=550e8400-e29b-41d4-a716-446655440000"
}