* **build:** line numbers mode when language specifier has symbol ([#1353](https://github.com/vuejs/vitepress/issues/1353)) ([9c04a10](https://github.com/vuejs/vitepress/commit/9c04a10c4d9fbfc591dc2386b4780a6728f6364a))
* **build:** remove leading underscore from chunks ([#1394](https://github.com/vuejs/vitepress/issues/1394)) ([66cd164](https://github.com/vuejs/vitepress/commit/66cd1640d16170e0c2d9eb4565ad1ebe81f940e1))
* **compat:** use default export of dns module ([#1388](https://github.com/vuejs/vitepress/issues/1388)) ([fa6fa56](https://github.com/vuejs/vitepress/commit/fa6fa56af9de78856017f935922e4f2f9376be62))
* **theme:** always add alt attribute to images ([#1348](https://github.com/vuejs/vitepress/issues/1348)) ([a621c69](https://github.com/vuejs/vitepress/commit/a621c6910c0083adc26dd4b7aaa7d532544cc7fa))
### Features
* **build:** allow using `transformIndexHtml` ([#1380](https://github.com/vuejs/vitepress/issues/1380)) ([ce8d139](https://github.com/vuejs/vitepress/commit/ce8d139a8e70e4d0a8d06711c50119990b041078))