Vite Rollup fails on "bun:sqlite" import even when it is marked as external

[joshdchang]

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What version of Bun is running?

1.0.7+b0393fba6200d8573f3433fb0af258a0e33ac157

What platform is your computer?

Darwin 23.0.0 arm64 arm

What steps can reproduce the bug?

When importing bun:sqlite in a Vite/Rollup project, it causes an error on build.

import { Database } from "bun:sqlite";

I marked bun:sqlite as an external dependency (external: ["bun:sqlite"] in Rollup config), so it should be ignored but it isn't.

What is the expected behavior?

I expected the build to compile while allowing bun:sqlite to be external. The Vite dev server works as expected, this is just on build.

What do you see instead?

I'm getting the following error: Error [PLUGIN_ERROR]: Only URLs with a scheme in: file, data, and node are supported by the default ESM loader. Received protocol 'bun:'

Additional information

I am submitting this as an issue to Bun because I think it may be useful for cases like this to have a way to reference the bun:sqlite module without using the :, such as having bun/sqlite as an alias or just including it as part of the Bun object.

[Electroid]

We'll need to submit PRs to Rollup and Vite to consider fixing this. /cc @colinhacks

[joshdchang]

Should I submit an issue to Rollup?

[SlavenIvanov]

Is there a workaround available for this?

[keisanng]

Is there any solution @bun team?

[zackify]

The only workaround I found, is using better-sqlite3 in dev. And marking it external works but only for production builds.

This sucks but works in the meantime.

[Jarred-Sumner]

If marking bun:sqlite as external in Rollup doesn't work in Rollup, then it's hard for us (Bun) to do anything about that.

Can you file an issue in Rollup's repository and link to it here?

[zackify]

Oh yeah, I know it’s on them. I actually have it on my list tomorrow to find where the problem is, vite or esbuild and patch it. I’ll respond here with what I find.

[zackify]

Alright, I found out the issue. Hopefully this helps someone.

let me know and I can update this guide because remix is different under vite https://bun.sh/guides/ecosystem/remix

Vite will work, but you have to be running fully under bun.

I had remix setup like this:

remix vite:dev

I had to change this to

bun run --bun vite

same with the build command:

bunx --bun remix vite:build

This will resolve bun deps without extra config options in vite.

For anyone interested, here's how I run my vite / remix app in prod:

NODE_ENV=production bun --bun run ./server.ts

and the server.ts file:

import type { ServerBuild } from "@remix-run/server-runtime";
import { createRequestHandler } from "@remix-run/server-runtime";
import { resolve } from "node:path";
import { type Serve } from "bun";

// in test mode this may not exist yet and tsc complains
//eslint-disable-next-line
//@ts-ignore
const build = await import("./build/server/index.js");

const remix = createRequestHandler(
  build as unknown as ServerBuild,
  Bun.env.NODE_ENV
);

export default {
  port: Bun.env.PORT || 3000,
  async fetch(request) {
    // First we need to send handle static files
    const { pathname } = new URL(request.url);

    if (pathname === "/health") {
      return new Response("OK", { status: 200 });
    }

    if (pathname.startsWith("/assets") || pathname.startsWith("/public")) {
      const file = Bun.file(
        resolve(__dirname, "./build/client/", `.${pathname}`)
      );
      if (await file.exists())
        return new Response(file, {
          headers: new Headers([["Cache-Control", "public, max-age=31536000"]]),
        });
    }

    // Only if a file its not a static file we will send it to remix
    return remix(request);
  },
} satisfies Serve;

and my entry.server.ts is using react 19 beta:

import type { EntryContext } from "@remix-run/node";
import { RemixServer } from "@remix-run/react";
//eslint-disable-next-line
//@ts-ignore
import { renderToReadableStream } from "react-dom/server.bun";
import "../shared/sentry/server";

export default async function handleRequest(
  request: Request,
  responseStatusCode: number,
  responseHeaders: Headers,
  remixContext: EntryContext
) {
  const stream = await renderToReadableStream(
    <RemixServer context={remixContext} url={request.url} />
  );

  const headers = new Headers(responseHeaders);

  headers.set("Content-Type", "text/html");
  return new Response(stream, {
    status: responseStatusCode,
    headers,
  });
}

[themodrnhakr]

Vite will work, but you have to be running fully under bun.

Hmmm, not working for me, even when running with --bun.

[Jarred-Sumner]

This will be fixed in Bun v1.2.8 due to the usage of #15795

[themodrnhakr]

This will be fixed in Bun v1.2.8 due to the usage of #15795

I'm currently running v1.2.8, and the issue is not resolved (at least in the revision I'm running).

[Jarred-Sumner]

sorry, I meant v1.2.9.

Can you try bun upgrade --canary

[themodrnhakr]

Alas, still no success! (and yes, I confirmed I'm on v1.2.9)

Any chance there's a step I need to take to remove cache or something? I tried removing node_modules and reinstalling, with no effect.

I also tried bun pm cache rm.

[themodrnhakr]

Anything I can do on this? I'm at a standstill with sqlite:bun until it's fixed. Happy to open an issue with Vite if it would help.

[themodrnhakr]

Ok, updated to 1.2.10, no success. Updated Vite to 6.2.6, and everything is working.

[xriter]

@themodrnhakr Are you saying the issue is solved now?

I am running into a comparable issue:

import { $ } from "bun";

and in dev mode I get: [ERROR] Cannot find module 'bun' imported from...

Even with these rollup settings:

build: {
      rollupOptions: {
            external: ["bun", "bun:*"],
        },
    },

Running the latest versions: Bun 1.2.11 and Astro 5.7.9 (which uses Vite 6.2.6)

Update: I got it working for now by changing my package.json to:

"scripts": {
        "dev": "bunx --bun astro dev"
}

(so adding bunx --bun is the trick)

[KubaJastrz]

I had to do this (using Bun.SQL):

	build: {
		rollupOptions: {
			external: ["bun"],
		},
	},
	optimizeDeps: {
		exclude: ["bun"],
	},

Vite 6.3.3, Bun 1.2.11, React-Router 7.5.3

Running with bun --bun react-router dev

[sbscan]

I use bun 1.2.11, vite 6.3.4 and having same issue but running 'bun --bun run build' fix it. It's a sveltekit project btw.

[KaiVolland]

@sbscan I tried the same solution for my sveltekit project, but unfortunately the build process never exits, so i can't use this in CI. Do you have any extra configs in svelte.config.js or vite.config.ts, or does it just work for you?

The last log is

> Using @sveltejs/adapter-node
  ✔ done

but the process never exits.

[sbscan]

nop, no extra config