Fix docs type-checking for the Tailwind plugin

[skirtles-code]

Type checking the docs package currently fails when Tailwind is included.

The underlying problem appears to be the Vite version. VitePress is still using Vite 5, whereas everything else is using Vite 7. The return value for the Tailwind plugin is Plugin, with import { Plugin } from 'vite', but that is currently resolving from Vite 7, which doesn't match the Vite 5 Plugin type needed by the VitePress config.

Tailwind itself is compatible with Vite 5.2.0+.

The solution is to make Vite an explicit dependency in the package.json for the docs package. This leads to pnpm installing two copies of Tailwind in node_modules, one for Vite 7 and one for Vite 5. Tailwind itself is the same in both cases, but the nested node_modules contains different version of Vite, allowing the types to resolve correctly.

This should benefit any other plugins that rely on Vite's Plugin type too.

[pkg-pr-new]

Open in StackBlitz

pnpm dlx https://pkg.pr.new/@skirtle/create-vue-lib@29

commit: 2597ff5