recast + jest-cli errors

error.log

fkling@Felixs-iMac ~/D/p/es6-forof> jest
Using Jest CLI v0.1.16
Found 1 matching tests...
 FAIL  __tests__/es6forof-test.js (0.166s)
Before parse
After parse
Before print
● es6-forof transform › it handles source
  - Throws: AssertionError: false == true
1 tests failed, 0 tests passed (1 total)
Run time: 0.726s

es6forof-test.js

"use strict";
jest.autoMockOff();

var transform = require('../');

describe('es6-forof transform', function() {
  it('handles source', function() {
    var code = transform('console.log(1);');
    expect(function() {
      eval(code);
    }).not.toThrow();
  });
});

index.js

'use strict';

var recast = require('recast');

function es6_forof(source) {
  console.log('Before parse');
  source = recast.parse(source);
  console.log('After parse');
  console.log('Before print');
  source = recast.print(source).code;
  console.log('After print');
  return source;
}

module.exports = es6_forof;