docs: function isInEmptyFolder() {
      var files = FS.readdirSync( '.' );
      try {
          if ( files.length == 0 ) return true;
          console.log( Fatal.format(
              "You should be in an empty folder to create a new project!\n" +
              "If you continue, all the files in this folder will be DELETED!"
          ) );
          console.log( "\nWe suggest that you create an fresh new directory, like this:" );
          console.log( "\n> " + "mkdir my-project-folder".yellow.italic );
          console.log( "> " + "cd my-project-folder".yellow.italic );
          console.log( "> " + "tfw init".yellow.italic );
          return false;
      } catch ( ex ) {
          fatal( "Fatal error in function `files`!\n" + JSON.stringify( ex, null, '  ' ) );
      }
  }