# Npm WARN deprecated 6to5-core@3.6.5: 6to5 is now 'babel'

**URL:** <https://discuss.emberjs.com/t/npm-warn-deprecated-6to5-core-3-6-5-6to5-is-now-babel/7331>\
**Category:** Ember CLI\
**Created:** [February 16, 2015, 10:33pm UTC](https://discuss.emberjs.com/t/npm-warn-deprecated-6to5-core-3-6-5-6to5-is-now-babel/7331 "2015-02-16T22:33:05Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![broerse](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/broerse/32/9497_2.png) [@broerse](https://discuss.emberjs.com/u/broerse)\
**Post date:** [February 16, 2015, 10:33pm UTC](https://discuss.emberjs.com/t/npm-warn-deprecated-6to5-core-3-6-5-6to5-is-now-babel/7331/1 "2015-02-16T22:33:05Z")

</div>

Installing Ember CLI’s `npm install` now gives:

`npm WARN deprecated 6to5-core@3.6.5: 6to5 is now 'babel': https://babeljs.io/blog/2015/02/15/not-born-to-die`

But everything works fine!

---

<div class="post-metadata">

**Author:** ![atsjj](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.emberjs.com/atsjj/32/14817_2.png) [@atsjj](https://discuss.emberjs.com/u/atsjj)\
**Post date:** [February 18, 2015, 1:36am UTC](https://discuss.emberjs.com/t/npm-warn-deprecated-6to5-core-3-6-5-6to5-is-now-babel/7331/2 "2015-02-18T01:36:49Z")

</div>

The `ember-cli` repository on GitHub already has a change listed for the [0.2.0-beta.1](https://github.com/ember-cli/ember-cli/blob/3478de18296778aae69bc790c3098d5d117f749d/CHANGELOG.md) release.

That being said, I don’t know how much longer we’ll see Babel (6to5); I think @rwjblue is moving in favor of [Esperanto](https://github.com/esperantojs/esperanto), which I believe will trim down ES3 transforms as well as some of the wonky ES6 module importing that has had to be worked around in the past. I also believe it’s faster too!