Running inline-source command on file removes contents of file.

[zbayoff]

Hello,
This is probably not an issue with inline-source itself, and more of me not understanding the CLI well enough. But I have an index.html file in my dist folder with a script with the inline attribute. I would like to run the inline-source command on this index.html and replace it exactly, except with the script now inlined.
I tried running: cat ./index.html | inline-source --root ./ > ./index.html but this just empties the index.html file.
Could you provide a little guidance?

Thank you.