old_contents: 'use strict';
  
  module.exports = function gruntfile (grunt) {
    let loadGruntConfig = require('load-grunt-config');
    let pkg = grunt.file.readJSON('package.json');
    let digsDevPkg;
    try {
      digsDevPkg = grunt.file.readJSON('node_modules/digs-dev/package.json');
    } catch (ignored) {
      digsDevPkg = pkg;
    }
  
    /**
     * Random bits of crap to send to the Grunt templates
     * @type {{pkg: Object, bower: ?Object, min: Function, author: *}}
     */
    let data = {
      pkg: pkg,
      author: typeof pkg.author === 'string' ? pkg.author :
        [pkg.author.name, pkg.author.email].join(' '),
      digsDevPkg: digsDevPkg
    };
  
    Object.defineProperty(data, 'author', {
  
      /**
       * Normalizes `author` field of `package.json`.
       * @returns {string} Author name(s) and email(s)
       */
      get: function author () {
        function _author (auth) {
          var format;
          if (typeof auth === 'string') {
            return auth;
          }
          format = require('util').format;
          return format('%s <%s>', auth.name, auth.email);
        }
  
        if (Array.isArray(pkg.author)) {
          return pkg.author.map(function makeAuthor (auth) {
            return _author(auth);
          }).join(', ');
        }
        return _author(pkg.author);
      }
    });
  
    if (grunt.option('time')) {
      require('time-grunt')(grunt);
    }
  
    grunt.registerTask('watch-digs-dev', ['concurrent:watch-digs-dev']);
  
    loadGruntConfig(grunt, {
      jitGrunt: {
        staticMappings: {
          devUpdate: 'grunt-dev-update',
          'bump-only': 'grunt-bump',
          'bump-commit': 'grunt-bump',
          'mocha_istanbul': 'grunt-mocha-istanbul'
        }
      },
      data: data
    });
  };
  
new_contents: 'use strict';
  
  module.exports = function gruntfile(grunt) {
    let loadGruntConfig = require('load-grunt-config');
    let pkg = grunt.file.readJSON('package.json');
    let digsDevPkg;
    try {
      digsDevPkg = grunt.file.readJSON('node_modules/digs-dev/package.json');
    } catch (ignored) {
      digsDevPkg = pkg;
    }
  
    /**
     * Random bits of crap to send to the Grunt templates
     * @type {{pkg: Object, bower: ?Object, min: Function, author: *}}
     */
    let data = {
      pkg: pkg,
      author: typeof pkg.author === 'string' ? pkg.author :
        [
          pkg.author.name,
          pkg.author.email
        ].join(' '),
      digsDevPkg: digsDevPkg
    };
  
    Object.defineProperty(data, 'author', {
  
      /**
       * Normalizes `author` field of `package.json`.
       * @returns {string} Author name(s) and email(s)
       */
      get: function author() {
        function _author(auth) {
          var format;
          if (typeof auth === 'string') {
            return auth;
          }
          format = require('util').format;
          return format('%s <%s>', auth.name, auth.email);
        }
  
        if (Array.isArray(pkg.author)) {
          return pkg.author.map(function makeAuthor(auth) {
            return _author(auth);
          }).join(', ');
        }
        return _author(pkg.author);
      }
    });
  
    if (grunt.option('time')) {
      require('time-grunt')(grunt);
    }
  
    grunt.registerTask('watch-digs-dev', ['concurrent:watch-digs-dev']);
    
    loadGruntConfig(grunt, {
      jitGrunt: {
        staticMappings: {
          devUpdate: 'grunt-dev-update',
          'bump-only': 'grunt-bump',
          'bump-commit': 'grunt-bump',
          'mocha_istanbul': 'grunt-mocha-istanbul'
        }
      },
      data: data
    });
  };
  
subject: reformat Gruntfile.js