fix: transformation of url to cleanUrl / pretty url

[endiliey]

Motivation

Fix #922 and babel/website#1780

cc @hzoo

Changes

• Pretty/cleanUrl should only remove html extension and not other extension
• Stronger test for the getPath function that transform url to clean url.
• cleanUrl of /react/index.html should be /react/ and not /react

Have you read the Contributing Guidelines on pull requests?

yes

Test Plan

//2018-08-27-7.0.0.md
---
layout: post
title:  "Babel 7 Released"
author: Henry Zhu
authorURL: https://twitter.com/left_pad
date:   2018-08-27 18:00:00
categories: announcements
share_text: "Babel 7 Released"
---

After almost 2 years, 4k commits, over 50 pre-releases, and a lot of help we are excited to announce the release of Babel 7. It's been almost [3 years](https://babeljs.io/blog/2015/10/29/6.0.0) since the release of Babel 6! There's a lot of moving parts so please bear with us in the first weeks of release.

<!-- truncate -->

> If you appreciate the work we're doing on Babel, you can sponsor Babel on [Open Collective](https://opencollective.com/babel), support me on [Patreon](https://www.patreon.com/henryzhu), or get you or your company involved with Babel as part of work. We'd appreciate the collective ownership of this vital project in the JavaScript community!

## It's Happening! 🎉

Software is never going to be perfect but we're ready to ship something that's already been used in production for some time now! [`@babel/core`](https://www.npmjs.com/package/@babel/core) is already at 5.1 mil downloads/month because of its usage in tools like [Next.js 6](https://zeit.co/blog/next6), [vue-cli 3.0](https://medium.com/the-vue-point/vue-cli-3-0-is-here-c42bebe28fbb), [React Native 0.56](https://facebook.github.io/react-native/blog/2018/07/04/releasing-react-native-056), and even [Wordpress's frontend](https://github.com/Automattic/wp-calypso) 🙂!

## Babel's Role

I'd like to start this post by re-introducing Babel's [role](https://www.youtube.com/watch?v=fntd0sPMOtQ) in the JavaScript ecosystem over the last few years.

Header title URL should be correct now.

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[existentialism]

@endiliey thanks for the quick fix!

[yangshun]

LGTM. Thanks @endiliey

[hzoo]

Awesome!