code: function wrapPackage(pkg, flow, contentPrepend){
    return [
      formatList('filelist', pkg.map(function(file){
        return file.filename;
      })),
  
      '(function(){\n',
      '"use strict";\n\n',
      'var __namespace_map__ = ' + JSON.stringify(flow.js.fn2ns) + ';\n',
  
      contentPrepend,
  
      '\n}).call(this);'
    ].join('');
  }
docs: wrap package