Experimental redirect: "Failed to resolve entry for package"

[sanderbongers]

What version of astro are you using?

2.7.0

Are you using an SSR adapter? If so, which one?

No

What package manager are you using?

pnpm (but happens with all)

What operating system are you using?

Mac

What browser are you using?

Firefox

Describe the Bug

My aim is to use /blog as the homepage instead of /, which I tried using aredirect, like this:

astro.config.mjs

export default defineConfig({
	experimental: {
		redirects: true,
	},
	redirects: {
		"/": "/blog",
	},
});

But whenever the redirect key is "/" or "", the build fails (node v20.3.0):

09:28:38 PM [build] Building static entrypoints...
[@astro/plugin-build-internals] Failed to resolve entry for package "/usr/local/var/www/blog". The package may have incorrect main/module/exports specified in its package.json.
 error   Failed to resolve entry for package "/usr/local/var/www/blog". The package may have incorrect main/module/exports specified in its package.json.
  File:
    /usr/local/var/www/blog/node_modules/.pnpm/[email protected]/node_modules/vite/dist/node/chunks/dep-e8f070e8.js:23382:11
  Code:
    23381 | function packageEntryFailure(id, details) {
    > 23382 |     throw new Error(`Failed to resolve entry for package "${id}". ` +
            |           ^
      23383 |         `The package may have incorrect main/module/exports specified in its package.json` +
      23384 |         (details ? ': ' + details : '.'));
      23385 | }
  Stacktrace:

pnpm run dev works though, it's only pnpm run build that fails.

I've implemented a workaround by using a double slash, like so: "//": "/blog", then it behaves as expected.

What's the expected result?

Being able to build the site with the intended redirect.

Link to Minimal Reproducible Example

https://stackblitz.com/github/withastro/astro/tree/latest/examples/blog?file=astro.config.mjs&on=stackblitz

Participation

• I am willing to submit a pull request for this issue.

[JerryWu1234]

let me take a look

[JerryWu1234]

because '/' was occupied by the vite.
I want to add the '/' after the '/' if the user has used '/' as a redirect path.but I feel that it's maybe not a good idea. I'm afraid of my work being useless.
could you share you idea ,if you are available

[awcot]

Similar config & goals, same issue

[sanderbongers]

Great work @matthewp! 👏