Error: Cannot find module '../../../markdown/lib/slugify'

[0w0k]

Bug report

Version

"vuepress": "^1.0.0-alpha.11"

Steps to reproduce

npm run docs:dev

What is expected?

Start correctly

What is actually happening?

Error: Cannot find module '../../../markdown/lib/slugify'

Other relevant information

In 
/node_modules/_@vuepress_core@1.0.0-alpha.11@@vuepress/core/lib/prepare/Page.js:7:17
Should not be
const slugify = require('../../../markdown/lib/slugify')
Should be
const slugify = require('@vuepress/markdown/lib/slugify')

• Your OS: macOS
• Node.js version: 8.11.2
• Browser version: Chrome 69.0.3497.100
• Is this a global or local install? local
• Which package manager did you use for the install? npm

[ulivz]

Release at 1.0.0-alpha.12.