Windows WSL: CD into the most recently used explorer directory from bash

cdf.sh

  pfd() {
    local windir="$(pwsh.exe -NoProfile -NonInteractive -NoLogo -ExecutionPolicy Bypass -Command - <<"EOF"
$Win32API = Add-Type -Name Funcs -Namespace Win32 -PassThru -MemberDefinition @'
  [DllImport("user32.dll", SetLastError = true)]
  public static extern IntPtr FindWindow(string lpClassName, IntPtr lpWindowName);
'@

$topmostHwnd = $Win32API::FindWindow('CabinetWClass', [IntPtr]::Zero)
$topmostWindow = (New-Object -COM 'Shell.Application').Windows() | Where-Object {$_.HWND -eq $topmostHwnd}
$topmostWindow.Document.Folder.Self.IsFileSystem ? $topmostWindow.Document.Folder.Self.Path : $null
EOF
    )"
    wslpath "$windir" | tr -d '\r'
  }

  cdf() {
    cd "$(pfd)"
  }