How to compute content-length when body is of type fs.createReadStream

[milad2golnia]

What would you like to discuss?

I have a big file on file system and I want to upload it to AWS.
Documentation says:

Since Got 12, the content-length header is not automatically set when body is an instance of fs.createReadStream().
...

But when uploading to AWS, we need to set content-length. How can I calculate it?

Checklist

• I have read the documentation.