Astro build is not support

[msereniti]

User report is here:

we are currently exploring the possibility of using astro as an ssr/template render framework
overall everything works great, but we're running into a few issues that seem to be on the Vite side

1. imports like @semcore/ui/* do not work, we get the error Unexpected token 'export'
2. when using imports like @semcore/*, everything works fine in development mode, but during the production build we > get an error like Element type is invalid: expected a string, which can be solved with such hack:

import $Button from "@semcore/button";
const Button = $Button.default || $Button

I found some opened github issues, but nothing has helped me so far

1. Inconsistent handling of default imports (exports) in astro dev and astro build withastro/astro#5277
2. ESM dependencies are not resolved correctly during build withastro/astro#4692
3. Production environment library method does not exist vitejs/vite#9061

It seems that issue is caused by weird Astro resolver but anyway we must support it.