Description

As a developer using Vite server-side rendering. I use ssrLoadModule to transform and load source code. This is very convenient (thanks for this awesome project~).

Since I want to use the edge runtime API to run the source code, I was hoping we could expose the context for ViteDevServer.ssrLoadModule so I could inject the Edge Runtime primitives into the scope of the code execution function:

I see that there is already a context parameter for the ssrLoadModule method in vite/src/node/ssr/ssrModuleLoader.ts, so it just needs to expose the context in the server's ssrModuleLoader, as follows:

  ssrLoadModule(
    url: string,
    opts?: { 
       fixStacktrace?: boolean,
       context: Record<string, any>, 
   }
  ): Promise<Record<string, any>>

In addition to this case, I think supporting custom contexts should also make ssrLoadModule more flexible.

I would be happy to send a pr if I could do so ~ Thanks a lot!

Suggested solution

Finally, when custom SSR context are needed, we can do something like this:

import { createServer as createViteServer } from 'vite';

const server = await createViteServer({
  server: { middlewareMode: true },
  appType: 'custom',
});

const { render } = await server.ssrLoadModule('/src/entry-server.tsx', {
  context: {
    fetch: customFetchPolyfill,
    URLPattern: urlpattern - polyfill,
  },
});

Alternative

No response

Additional context

No response

Validations

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