フォルダの更新を監視してMakeをキックするJScript

automake.js

fs = new ActiveXObject("Scripting.FileSystemObject");
base = fs.BuildPath(String(WScript.ScriptFullName).replace(WScript.ScriptName,""), ".");
objFile = fs.GetFolder(base);
a = new Date(objFile.DateLastModified).getTime();
while(true){
  WScript.sleep(1000);
  b = new Date(objFile.DateLastModified).getTime();
  if(a != b){
    //WScript.echo("ファイルが更新されました" + a +"vs" + b);
    var sh = new ActiveXObject( "WScript.Shell" );
    sh.CurrentDirectory = base;
    sh.Run('"C:/Program Files (x86)/Microsoft Visual Studio 11.0/VC/bin/nmake.exe"',1,true );
    a = b;
  }
}