# The API document version is different from the released in npm

**URL:** <https://forum.babylonjs.com/t/the-api-document-version-is-different-from-the-released-in-npm/5893>\
**Category:** Bugs\
**Tags:** documentation\
**Created:** [September 26, 2019, 10:09am UTC](https://forum.babylonjs.com/t/the-api-document-version-is-different-from-the-released-in-npm/5893 "2019-09-26T10:09:42Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![wmlgl](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/wmlgl/32/4564_2.png) [@wmlgl](https://forum.babylonjs.com/u/wmlgl)\
**Post date:** [September 26, 2019, 10:09am UTC](https://forum.babylonjs.com/t/the-api-document-version-is-different-from-the-released-in-npm/5893/1 "2019-09-26T10:09:42Z")

</div>

Npm’s relaesed version does not exist class WebXRControllerPointerSelection and  
WebXRControllerModelLoader.

---

<div class="post-metadata">

**Author:** ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)\
**Post date:** [September 26, 2019, 12:19pm UTC](https://forum.babylonjs.com/t/the-api-document-version-is-different-from-the-released-in-npm/5893/2 "2019-09-26T12:19:49Z")

</div>

What version have you installed? latest, preview, or a specific version?

Just to elaborate, `npm install @babylonjs/core` will install the latest stable release.  
`npm install @babylonjs/core@preview` will install the latest preview, with every class exists in the master branch.

---

<div class="post-metadata">

**Author:** ![wmlgl](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/wmlgl/32/4564_2.png) [@wmlgl](https://forum.babylonjs.com/u/wmlgl)\
**Post date:** [September 27, 2019, 3:32am UTC](https://forum.babylonjs.com/t/the-api-document-version-is-different-from-the-released-in-npm/5893/3 "2019-09-27T03:32:00Z")

</div>

“@babylonjs/core”: “^4.0.3”,  
“@babylonjs/gui”: “^4.0.3”,  
“@babylonjs/loaders”: “^4.0.3”,

---

<div class="post-metadata">

**Author:** ![RaananW](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/raananw/32/28955_2.png) [@RaananW](https://forum.babylonjs.com/u/RaananW)\
**Post date:** [September 27, 2019, 8:12am UTC](https://forum.babylonjs.com/t/the-api-document-version-is-different-from-the-released-in-npm/5893/4 "2019-09-27T08:12:01Z")

</div>

Please use the preview release to get the latest and greatest 🙂  
you can install the latest alpha, or simply use @preview . you can see the versions on npm:

> **[@babylonjs/core](https://www.npmjs.com/package/@babylonjs/core/v/4.1.0-alpha.22)**
>
> Babylon.js is a JavaScript 3D engine based on webgl.