Show a moon spinner on the tab title using DynamicTitle PowerShell module

MoonSpinner.ps1

#Requires -Modules DynamicTitle

$commandStartJob = Start-DTJobCommandPreExecutionCallback -ScriptBlock {
    param($command)
    (Get-Date), $command
}

$promptJob = Start-DTJobPromptCallback -ScriptBlock {
    (Get-Date)
}

$initializationScript = {
    $spinnerSymbols = @('🌑', '🌒', '🌓', '🌔', '🌕', '🌖', '🌗', '🌘')
    $spinnerSymbolIndex = 0
}

$update = {
    param($commandStartJob, $promptJob)

    $commandStartDate, $command = Get-DTJobLatestOutput $commandStartJob
    $commandEndDate = Get-DTJobLatestOutput $promptJob

    if ($null -ne $commandStartDate) {
        if (($null -eq $commandEndDate) -or ($commandEndDate -lt $commandStartDate)) {
            $commandDuration = (Get-Date) - $commandStartDate
            $isCommandRunning = $true
        }
        else {
            $commandDuration = $commandEndDate - $commandStartDate
        }
    }

    if ($command) {
        $command = $command.Split()[0]
    }

    $spinner = $spinnerSymbols[0]
    if ($commandDuration) {
        if ($commandDuration.TotalSeconds -gt 1) {
            $commandSegment = '➖ [{0}]-⌚{1}' -f $command, $commandDuration.ToString('mm\:ss')
            if ($isCommandRunning) {
                $script:spinnerSymbolIndex = ($script:spinnerSymbolIndex + 1) % $spinnerSymbols.Count
                $spinner = $spinnerSymbols[$script:spinnerSymbolIndex]
            }
        }
        else {
            $script:spinnerSymbolIndex = 0
        }
    }

    '{0} PowerShell {1}' -f $spinner, $commandSegment
}

$params = @{
    ScriptBlock = $update
    ArgumentList = $commandStartJob, $promptJob
    InitializationScript = $initializationScript
}

Start-DTTitle @params