[SOLVED] VuePress not hot reloading, but does when config.js is changed

I'm using VuePress for the first time, and updating .md files isn't triggering live reloading.

If I update the .vuepress/config.js my browser does reload. If I run:

vuepress dev --debug

I see this line in the output, which seems suspicious:

debug watchFiles [
  '.vuepress/config.js',
  '.vuepress/config.yml',
  '.vuepress/config.toml'
]

Is this the error, or is this correct? Googling vuepress watchfiles doesn't show anything particularly useful.

Since VuePress is now VitePress, I will present the solution for how to reload VitePress sites.

You can simply start a dev server with instant hot updates using,

npm run docs:dev