jsh: command not found: sleep

[itsjavi]

Describe the bug

The sh command "sleep" is not available in jsh

Link to the blitz that caused the error

https://stackblitz.com/~/github.com/itsjavi/storylite

Steps to reproduce

1. Go to the console
2. Run pnpm build

Expected behavior

jsh should provide a sleep command, and scripts using it won't fail

Parity with Local

• I have run the project in my local machine and I could not reproduce the issue.

Screenshots

No response

Platform

Version = 1.72.0
Hash = 1f5b41a1fa45587676aa81b22e70bc6505f6b12e
WebContainer = 961159ce

Browser name  = Chrome
Full version  = 115.0.0.0
Major version = 115
navigator.appName = Netscape
navigator.userAgent = Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36
performance.memory = {
  "totalJSHeapSize": 83505079,
  "usedJSHeapSize": 79315871,
  "jsHeapSizeLimit": 4294705152
}

Additional context

While sleep is not a critical command to have, it's useful in some situations like giving enough time for the user to read the output before running next command.

It seems we have a reduced set of shell commands available:

❯ ls /bin
bash@     cp*       jsh*      ls*       ps*       rmdir*    
cat*      echo*     kill*     mkdir*    pwd*      sh@       
chmod*    hostname* ln*       mv*       rm*       zsh@   

❯ ls /usr/bin/
alias*  clear*  env*    head*   tail*   true*   which*  
cd*     curl*   false*  sort*   touch*  uptime* 

So it will be helpful to know what can be expect to be supported in the future, and what shouldn't be considered.

An example implementation of sleep (not tested):

#!/bin/sh

# check if the user provided a sleep duration
if [ $# -ne 1 ]; then
    echo "usage: sleep <seconds>"
    exit 1
fi

# calculate the end time by adding the seconds
end_time=$(($(date +%s) + $1))

# Loop until the current time is greater than or equal to the end time
while [ $(date +%s) -lt $end_time ]; do
    :
done

exit 0

[Nemikolh]

Hey @itsjavi! This would be an excellent addition, I've added it to our internal issue tracker.