Apply Windows proxy settings to npm automatically

npm-win-proxy.ps1

try {
  $proxyKey = (Get-ItemProperty -Path "HKCU:\Software\Microsoft\Windows\CurrentVersion\Internet Settings" -Name ProxyServer -ErrorAction Stop).ProxyServer
  foreach($proxy in $proxyKey.Split(';')) {
    $parts = $proxy.Split('=')
    switch ($parts[0]) {
      'http' { iex "npm config set proxy http://$parts[1]"; break }
      'https' {  iex "npm config set https-proxy http://$parts[1]"; break }
    }
  }
}
catch {
  # No config was found - no proxy!
  iex "npm config delete proxy"
  iex "npm config delete https-proxy"
}