Continuously watches for .coffee file changes in a folder (and subfolders), and runs the CoffeeScript compiler against them

Continuous-CoffeeScript.ps1

# watch a file changes in the current directory, 
# compile when a .coffee file is changed or renamed

$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = get-location
$watcher.IncludeSubdirectories = $true
$watcher.EnableRaisingEvents = $false
$watcher.NotifyFilter = [System.IO.NotifyFilters]::LastWrite -bor [System.IO.NotifyFilters]::FileName

while($TRUE){
	$result = $watcher.WaitForChanged([System.IO.WatcherChangeTypes]::Changed -bor [System.IO.WatcherChangeTypes]::Renamed -bOr [System.IO.WatcherChangeTypes]::Created, 1000);
	if($result.TimedOut){
		continue;
	}
	write-host "Modified" $result.Name
	$file = Get-Item $result.Name
	if($file.Extension -eq ".coffee"){
		write-host "Compiling" $result.Name
		coffee.cmd -c $file.FullName
	}
}

Note: coffee.cmd runs https://github.com/alisey/CoffeeScript-Compiler-for-Windows on my box but this works equally well with Node.exe if you'd like to use it to run the CoffeeScript compiler.