POST Request Adding Unexpected Chunked Encoding in Fetch API: Send Full Content-Length according to headers

[PratikBodawala]

I’m encountering a problem with chunked encoding when making a POST request using the Fetch API. Here’s a snippet of my code:

const resp = await fetch(
    'https://backend.ngrok-free.app/api/location/location',
    {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
      body: '{"foo": "bar"}',
    },
);

The request is being sent with chunked encoding, which adds 1 or 2 hex characters before the JSON data and a 0 after it. The request details are:

Host: backend.ngrok-free.app
User-Agent: Dalvik/2.1.0 (Linux; U; Android 14)
Transfer-Encoding: chunked
Accept-Encoding: gzip
Content-Type: application/json
Cookie: sessionid=72g7136808dfqwrudc4ym6a471mxoh
X-Forwarded-For: xx.xx.xx.xx
X-Forwarded-Host: backend.ngrok-free.app
X-Forwarded-Proto: https

e
{"foo": "bar"}
0

I’m using background-runner version 1.1.0.

I’ve attempted to resolve this issue by manually adding the Content-Length header, but it did not work.

How can I ensure that the POST request is sent without chunked encoding and with the full content-length?

ref: #60 (comment)