code: function displayMetrics(file) {
      var prefix = '';
  
      var code = fs.readFileSync(file, 'utf-8');
  
      // We remove any shebang at the start of the file since that isn't valid
      // Javascript and will trip up the parser.
  
      code = code.replace(/^#!.*\n/, '');
  
      var metrics = complexity(code);
  
      // Walk the metrics structure and add each member to the table rows.
  
      function walk(data, name) {
          // Fade out anonymous functions.
  
          if (name.indexOf('anon@') === 0) {
              name = name.grey;
          }
  
          rows.push([ prefix + name, data.ecc, data.arity, data.codeLines, data.commentLines, Math.round(100 * data.commentLines / data.codeLines) ]);
  
          // Add two spaces to the prefix before the next depth, to illustrate
          // the hierarchy in the table.
  
          prefix += '  ';
          _.each(data.children, walk);
          prefix = prefix.slice(0,prefix.length-2);
      }
      walk(metrics, path.basename(file).blue.bold);
  }
docs: Analyze a file and add it's metrics to the table.