old_contents: var babel = require('../lib/babel');
  var camelcase = require('camelcase');
  var del = require('del');
  var fs = require('fs');
  var gat = require('gulp-auto-task');
  var galv = require('galvatron');
  var gulp = require('gulp');
  var gulpUtil = require('gulp-util');
  var gulpRename = require('gulp-rename');
  var gulpSourcemaps = require('gulp-sourcemaps');
  var gulpUglify = require('gulp-uglify');
  var path = require('path');
  var report = require('../lib/report');
  var rollup = require('../lib/rollup');
  
  var opts = gat.opts();
  var tmpFile = 'src/global.js';
  var packageJson = require(path.join(process.cwd(), 'package.json'));
  var packageMain = packageJson['jsnext:main'] || packageJson.main;
  var packageName = packageJson.name;
  var packageNameVar = opts.global || camelcase(packageName);
  var packageVersion = packageJson.version;
  var noConflictAndGlobal = `
    import main, * as api from '../${packageMain}';
    const previousGlobal = window.${packageNameVar};
    main.noConflict = function noConflict () {
      window.${packageNameVar} = previousGlobal;
      return this;
    };
    window.${packageNameVar} = main;
    for (let name in api) {
      main[name] = api[name];
    }
    main.version = ${packageVersion}
    export default main;
  `;
  
  module.exports = gulp.series(
    function cleanBefore () {
      return del(['dist', 'lib', tmpFile]);
    },
    function lib () {
      return gulp.src(['src/**/*.js'])
        .pipe(galv.cache('lib', babel(opts.babel)))
        .pipe(gulp.dest('lib'));
    },
    function createTmp (done) {
      fs.writeFile(tmpFile, new Buffer(noConflictAndGlobal, 'utf-8').toString(), done);
    },
    function dist (done) {
      rollup(tmpFile, {
        dest: 'dist/index.js',
        exports: opts.exports,
        globals: opts.globals,
        jsx: opts.jsx,
        moduleName: packageNameVar
      }, done);
    },
    function removeTmp () {
      return del([tmpFile]);
    },
    opts.max ? function (done) {
      done();
    } : function uglify () {
      return gulp.src('dist/index.js')
        .pipe(gulpRename({ basename: 'index.min' }))
        .pipe(gulpSourcemaps.init())
        .pipe(report(gulpUglify()))
        .pipe(gulpSourcemaps.write('.'))
        .pipe(gulp.dest('dist'));
    },
    function notify (done) {
      gulpUtil.log('Done!');
      done();
    }
  );
  
new_contents: var babel = require('../lib/babel');
  var camelcase = require('camelcase');
  var del = require('del');
  var fs = require('fs');
  var gat = require('gulp-auto-task');
  var galv = require('galvatron');
  var gulp = require('gulp');
  var gulpUtil = require('gulp-util');
  var gulpRename = require('gulp-rename');
  var gulpSourcemaps = require('gulp-sourcemaps');
  var gulpUglify = require('gulp-uglify');
  var path = require('path');
  var report = require('../lib/report');
  var rollup = require('../lib/rollup');
  
  var opts = gat.opts();
  var tmpFile = 'src/global.js';
  var packageJson = require(path.join(process.cwd(), 'package.json'));
  var packageMain = packageJson['jsnext:main'] || packageJson.main;
  var packageName = packageJson.name;
  var packageNameVar = opts.global || camelcase(packageName);
  var packageVersion = packageJson.version;
  var noConflictAndGlobal = `
    import main, * as api from '../${packageMain}';
    const previousGlobal = window.${packageNameVar};
    main.noConflict = function noConflict () {
      window.${packageNameVar} = previousGlobal;
      return this;
    };
    window.${packageNameVar} = main;
    for (let name in api) {
      main[name] = api[name];
    }
    main.version = '${packageVersion}';
    export default main;
  `;
  
  module.exports = gulp.series(
    function cleanBefore () {
      return del(['dist', 'lib', tmpFile]);
    },
    function lib () {
      return gulp.src(['src/**/*.js'])
        .pipe(galv.cache('lib', babel(opts.babel)))
        .pipe(gulp.dest('lib'));
    },
    function createTmp (done) {
      fs.writeFile(tmpFile, new Buffer(noConflictAndGlobal, 'utf-8').toString(), done);
    },
    function dist (done) {
      rollup(tmpFile, {
        dest: 'dist/index.js',
        exports: opts.exports,
        globals: opts.globals,
        jsx: opts.jsx,
        moduleName: packageNameVar
      }, done);
    },
    function removeTmp () {
      return del([tmpFile]);
    },
    opts.max ? function (done) {
      done();
    } : function uglify () {
      return gulp.src('dist/index.js')
        .pipe(gulpRename({ basename: 'index.min' }))
        .pipe(gulpSourcemaps.init())
        .pipe(report(gulpUglify()))
        .pipe(gulpSourcemaps.write('.'))
        .pipe(gulp.dest('dist'));
    },
    function notify (done) {
      gulpUtil.log('Done!');
      done();
    }
  );
  
subject: Fix syntax error in generated file.