How do I keep a node.js repl from sleeping, I saw a post about this some time ago but I can't find it.

add
then use uptime robot

I believe you need to pay for the Hacker subscription for that.

Socialix wrote:

I believe you need to pay for the Hacker subscription for that.

If you use uptime robot, no

Here is the solution I use for all of my repls:

1. Set up the repl
   
2. Add a http server, @Raihan142857 had some great code above
   
3. Set up something like Uptime ( https://uptimerobot.com/]Uptime ) Robot or Upptime ( https://upptime.js.org/]Upptime )
   
4. Then add your website to it by getting the repl.co link, it should look like replname.repluser.repl.co or repluser.repl.co
   
5. Restart the repl
   
6. Try to go to the page, it should be blank
   
7. Done! Your repl will be kept alive

I use this for all of my websites (status.onedot.cf and stats.wgyt.tk) because it is free, and works well.