@echo off

@Rem change to current directory
cd %~f0\..\..\..\

@Rem make log folder
if not exist log mkdir log

@Rem current file number
set /A num=0
if exist log\number set /p num=<log\number

echo %num > log\number

@Rem watchdog
:watchdog

    @Rem increment log file number
    set /A num=num+1
    echo %num > log\number  

    @Rem run
    powershell "npm start 2> log\%num%.err | tee log\%num%.out"
    
    @Rem give chance to close program
    timeout /t 5 /nobreak

goto watchdog