Export mac numbers file into csv format with apple script

numbers-export-csv.sh

#!/usr/bin/osascript

on run argv
    
    set theFilePath to POSIX file (item 1 of argv)
    set theFolder to theFilePath as alias
    tell application "System Events" to set theDocs to theFolder's items whose name extension = "numbers"
    
    repeat with aDoc in theDocs
        set docName to aDoc's name as text
            set exportName to (theFolder as text) & docName
            set exportName to exportName's text 1 thru -8
            -- set exportName to (exportName & "csv") -- append .csv to directory name
            tell application "Numbers"
                launch
                open aDoc
                delay 3 -- may need to adjust this higher 
                export front document to file exportName as CSV
            end tell
    end repeat
    
end run

That worked pretty fine, thanks. Only there's no extension in the exported file, so you may want to add a

set exportName to (exportName & "csv")

just between lines 17 and 18.