Replace hardcoded virtual module IDs with caller-provided import function

[Copilot]

Plugins previously hardcoded virtual module IDs ("virtual:remix/server-build", "virtual:react-router/server-build") as string parameters passed to createPlugin. This couples the implementation to specific Vite virtual module paths.

Changes

PluginOptions

• Added serverBuildImport?: () => Promise<ServerBuild> - caller provides the import function instead of a string ID

createPlugin

• Removed virtualModule parameter
• Uses serverBuildImport() to load development builds
• Throws clear error if serverBuildImport missing in Vite development mode

remixFastify / reactRouterFastify

• Provide default implementations: () => import("virtual:remix/server-build") and () => import("virtual:react-router/server-build")
• Backward compatible - existing code works unchanged

Usage

Default behavior unchanged:

await app.register(remixFastify);

Custom virtual module now possible:

await app.register(remixFastify, {
  serverBuildImport: () => import("virtual:custom-build")
});

Original prompt

Update the Remix/Fastify plugins to stop hardcoding Vite virtual module IDs and instead accept a caller-provided import function.

Scope:

• Repo: mcansh/remix-fastify
• Files likely involved:
  • packages/remix-fastify/src/plugins/index.ts
  • packages/remix-fastify/src/plugins/remix.ts
  • packages/remix-fastify/src/plugins/react-router.ts

Requirements:

1. Introduce a new option in the shared PluginOptions for providing a virtual module import function.
   • The caller will pass something like: () => import("virtual:remix/server-build") or () => import("virtual:react-router/server-build").
   • This should replace any hardcoded virtual module ID strings.
2. Update createPlugin (and any related types) to use the new option instead of receiving a hardcoded virtual module ID.
3. Update remixFastify and reactRouterFastify to accept the new option and pass it through.
4. Ensure types reflect that the import function returns a ServerBuild (or Promise of it).
5. Update any docs/comments if necessary to reflect the new option behavior.

Target base branch: dev (if it exists; it does).

This pull request was created from Copilot chat.

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[changeset-bot]

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Latest commit: 9e0f046

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[pkg-pr-new]

More templates

• basic-example-template
• playground
• react-router-example-template
• vite-remix

npm i https://pkg.pr.new/@mcansh/remix-fastify@613

commit: 9e0f046

[pkg-pr-new]

More templates

• basic-example-template
• playground
• react-router-example-template
• vite-remix

npm i https://pkg.pr.new/@mcansh/remix-fastify@613

commit: 9e0f046