How to stop Page Function middleware being called on everything?

[dominictobias]

The documentation says that I can place a _routes.json in dist to include or exclude files but this seems to have no effect.

functions/_middleware.ts

export const onRequest: PagesFunction<Env> = async context => {
  console.log('Middleware called on', context.request.url)
  return context.next()
}

I've tried many combos but given a _routes.json like this:

{
  "version": 1,
  "include": ["/favicon.png"],
  "exclude": []
}

The middleware is still called on everything, e.g:

Middleware called on http://localhost:7303/
GET / 304 Not Modified (56.47ms)
Middleware called on http://localhost:7303/@vite/client
Middleware called on http://localhost:7303/src/index.tsx
GET /src/index.tsx 304 Not Modified (47.49ms)
GET /@vite/client 304 Not Modified (94.05ms)
Middleware called on http://localhost:7303/@solid-refresh
Middleware called on http://localhost:7303/node_modules/@solidjs/router/dist/index.jsx
Middleware called on http://localhost:7303/src/App.tsx
Middleware called on http://localhost:7303/src/index.css
Middleware called on http://localhost:7303/node_modules/vite/dist/client/env.mjs
GET /@solid-refresh 304 Not Modified (24.08ms)
GET /node_modules/@solidjs/router/dist/index.jsx 304 Not Modified (22.85ms)
GET /src/App.tsx 304 Not Modified (22.05ms)
Middleware called on http://localhost:7303/node_modules/@solidjs/router/dist/components.jsx

What I would like to do is have a _middleware.ts which does two things:

1. On certain routes like /dashboard check a session cookie and redirect if not authorized

2. On every route that is not a real asset i.e. a html5 pushState route e.g. /dashboard, modify the responding index.html output

Any help appreciated

P.S. I start dev like this:

"start": "vite",
"dev": "wrangler pages dev --port 7303 --proxy 7302 --persist --compatibility-date=2023-02-27 -- yarn start",