default currentDir = '${Directory.GetCurrentDirectory()}'
default nodeDir = '${Path.Combine(currentDir, "bin", "nodejs")}'
var gruntCliInstalled = '${Directory.Exists(Path.Combine(nodeDir, "node_modules", "grunt-cli"))}'

-// Install grunt-cli locally
npm npmCommand='install --prefix ${nodeDir} grunt-cli' if='!gruntCliInstalled' once='installGruntCli'

-// Run grunt
node nodeCommand='${Path.Combine(nodeDir, "node_modules", "grunt-cli", "bin", "grunt")}' workingdir='${gruntDir}'