bun build --compile doesn't work for sveltekit apps

[opensas]

What version of Bun is running?

1.1.38

What platform is your computer?

Linux 6.8.0-49-generic x86_64 x86_64

What steps can reproduce the bug?

reference docs:

• https://bun.sh/guides/ecosystem/sveltekit
• https://bun.sh/docs/bundler/executables

$ bunx sv create sveltekit-bun-app

┌  Welcome to the Svelte CLI! (v0.6.7)
│
◇  Which template would you like?
│  SvelteKit demo
│
◇  Add type checking with Typescript?
│  Yes, using Typescript syntax
│
◆  Project created
│
◇  What would you like to add to your project? (use arrow keys / space bar)
│  none
│
◇  Which package manager do you want to install dependencies with?
│  bun

$ cd sveltekit-bun-app

$ bun dev --open

this works ok, then

$ bun add -D svelte-adapter-bun

update svelte.config.js

// import adapter from "@sveltejs/adapter-auto";
import adapter from "svelte-adapter-bun";

create build

$ bun --bun run build

test build

$ bun --bun build/index.js

works ok

compile app

$ bun build build/index.js --compile --outfile bun-server
  [34ms]  bundle  32 modules
  [99ms] compile  bun-server

$ ll -h bun-server
-rwxrwxrwx 1 sas sas 93M Dec 12 12:43 bun-server*

execute it

$ ./bun-server
Listening on 0.0.0.0:3000

assets cannot be found

console output:

$ ./bun-server 
Listening on 0.0.0.0:3000
error: Not found: /
      at new SvelteKitError (/$bunfs/root/bun-server:992:7)
      at /$bunfs/root/bun-server:18538:18
      at resolve2 (/$bunfs/root/bun-server:18449:29)
      at resolve (/$bunfs/root/bun-server:18396:42)
      at /$bunfs/root/bun-server:18394:49

error: Not found: /favicon.png
      at new SvelteKitError (/$bunfs/root/bun-server:992:7)
      at /$bunfs/root/bun-server:18538:18
      at resolve2 (/$bunfs/root/bun-server:18449:29)
      at resolve (/$bunfs/root/bun-server:18396:42)
      at /$bunfs/root/bun-server:18394:49

What is the expected behavior?

the app to work ok

What do you see instead?

the pasted screenshot

Additional information

same issue happens with deno: https://github.com/denoland/deno/issues/26155#issuecomment-2495622048

[nicola02nb]

Same happens to me... I'm thinking that the issue comes from how bun choses what files to include into the exe: https://bun.sh/docs/bundler/executables#deploying-to-production by watching only "import and require".

And svelte compiles it's build, no css are imported into the js files

(I'm on windows)

[opensas]

same problem with deno, so I guess it should be the same solution for both

please have a look at https://github.com/denoland/deno/issues/26155#issuecomment-2495622048 to reproduce the issue

[nicola02nb]

Yeah just tried with deno, and got the same issue

[Hugo-Dz]

Built my own adapter to solve this, works well! We can now compile full-stack SvelteKit apps as a single binary executable (with all Kit features such as SSR, API endpoints, server hooks, remote functions...)

[opensas]

Built my own adapter to solve this, works well! We can now compile full-stack SvelteKit apps as a single binary executable (with all Kit features such as SSR, API endpoints, server hooks, remote functions...)

This is great! I'm starring it and will definitely give it a try, and I hope bun devs could have a look at it so we can have bun compile sveltekit apps out of the box

[adworacz]

Just stumbled across this issue, as I was testing bun compilation. What I'm seeing is a complete request hang, even though the compiled executable emits logs just fine.

Steps

1. Install sveltekit and setup the demo app.
2. bun run build
3. bun build (runs from the built build directory). All requests are served properly, curl localhost:3000 works fine.
4. bun build --compile --production --outfile test build

Output:

╰─ bun build --production --compile --outfile test build2
   [6ms]  minify  -244.54 KB (estimate)
   [3ms]  bundle  24 modules
  [17ms] compile  test

Running ./test:

Listening on http://0.0.0.0:3000

Output of curl request:

╰─ curl -vvv localhost:3000 
12:06:13.197636 [0-x] == Info: [READ] client_reset, clear readers
12:06:13.197692 [0-0] == Info: Host localhost:3000 was resolved.
12:06:13.197728 [0-0] == Info: IPv6: ::1
12:06:13.197744 [0-0] == Info: IPv4: 127.0.0.1
12:06:13.197770 [0-0] == Info: [SETUP] added
12:06:13.197811 [0-0] == Info:   Trying [::1]:3000...
12:06:13.197925 [0-0] == Info: connect to ::1 port 3000 from ::1 port 52696 failed: Connection refused
12:06:13.197985 [0-0] == Info:   Trying 127.0.0.1:3000...
12:06:13.198051 [0-0] == Info: Connected to localhost (127.0.0.1) port 3000
12:06:13.198085 [0-0] == Info: using HTTP/1.x
12:06:13.198126 [0-0] => Send header, 78 bytes (0x4e)
0000: GET / HTTP/1.1
0010: Host: localhost:3000
0026: User-Agent: curl/8.11.1
003f: Accept: */*
004c: 
12:06:13.198204 [0-0] == Info: Request completely sent off
^C

So it accepts the request, and then just never responds.