what happens if you set it in the root layout?

looks like that works even for route handlers

Did you test it? This can be a solution. Thank you for helping me!

I was searching for next.config on the website's documentation but I didn't find this specific config on the current version in the official docs.

I found this code but it was on another website, so I was wondering if is it an outdated approach or not:

experimental: {
    runtime: 'experimental-edge',
  },

Thanks again!

I thought there was something in next config too but couldn't find it

I just tested in dev exporting runtime in root layout then tested some pages and route handlers

I am experiencing some difficulties while starting a project at this moment and I plan to test it when the issues get resolved. thanks

it used to be there, but has been removed

yes it was outdated and deprecated; no longer available since i think v13

I have pasted the code in the root layout @European sprat mentioned earlier but It does not work for me. the page is 404 when I am pasting this code. so maybe you @joulev know how to set config for all routes to be 'edge' without specifying in each file? thanks

No, it is impossible, you must specify it in each file

Thanks!