Some older ISS servers can send zero-length deflate responses. This causes the response to ‘slip through the cracks’, leading to the response promise to never be fulfilled.

I created a PR #903 to fix this over a month ago, but I am creating an issue due to inactivity.

Reproduction

More detail can be be found in the PR. This affects both version 2.x and 3.x. Essentially any response similar to

HTTP/1.1 200 OK
Content-Encoding: deflate
Content-Length: 0
Server: Microsoft-IIS/7.5

Expected behaviour

The node-fetch response promise should be fulfilled.