Narrator and point of view

The events described in the short story “An Outpost of Progress” by Joseph Conrad are told by a third-person narrator, who is outside the plot. 

The narrator is omniscient and knows what both Kayerts and Carlier think and feel. In the following example, the narrator knows how Carlier feels about his superior: “They both laughed loudly while Carlier thought: That poor Kayerts; he is so fat and unhealthy. It would be awful if I had to bury him here. He is a man I respect”. The narrator also knows what Kayerts thinks about when he is nostalgic about the past: 

He regretted the streets, the pavements, the cafés, his friends of many years; all the things he was used to see, day after day; all the thoughts suggested by familiar things—the thoughts effortless,...