Remote Functions fail with Rolldown bundler - `ERR_MODULE_NOT_FOUND`/ `ENOENT error for remote chunks`

[vyconm]

Describe the bug

#14736 and by extension this PR #14682 might be related to this

Environment:

• SvelteKit version: 2.47.0
• Vite version: rolldown-vite@7.1.17 (via npm alias)
• Rolldown version: 1.0.0-beta.43 (from the build output)
• Node.js version: You can get this with node --version
• Package manager: bun

Description:
When building with rolldown-vite as a Vite replacement, SvelteKit remote functions fail during the build process with an ENOENT error. The vite-plugin-sveltekit-remote plugin tries to read a remote chunk file that doesn't exist, but similar files with different hashes are present.

Error:**

[plugin vite-plugin-sveltekit-remote]
Error: ENOENT: no such file or directory, open '/Users/user/VSCode/project/front/.svelte-kit/output/server/chunks/remote-1mjzu66.js'

**Configuration:

// svelte.config.js - node adapter
kit: {
adapter: adapter({ precompress: true }),
experimental: {
remoteFunctions: true,
},
}

// package.json overrides
"overrides": {
"vite": "npm:rolldown-vite@latest"
}
Expected behavior:** Build should succeed as it does with regular Vite

Actual behavior: Build fails when trying to read remote function chunks

Additional context:

• The build works fine with regular Vite
• Remote chunk files are generated but with different hashes than expected
• Build output shows: `Rollup >=4.52.0 is recommended when using SvelteKit remote functions as it fixes some bugs related to code-splitting. Current version: 4.23.0

IMPORTANT NOTES:

• My Repro may not actually produce the issue - It's a private repo from our company, and I am struggling to get rolldown working in stackblitz. Any input on how to best respro this would be appreciated, I can understand if this issue get's closed or ignored because of this, sorry.
• the description here was generated by an LLM, I am far not knowledgable enough about this topic, can look for some stuff though

Reproduction

https://stackblitz.com/edit/sveltejs-kit-template-default-e8mz9uvv?file=package.json

Logs

...
transforming (5100) node_modules/bits-ui/dist/bits/utilities/dismissible-layer/use-dismissable-layer.svelte.js  vite:resolve 0.04ms tailwindcss -> null +115ms
  vite:resolve 0.09ms tw-animate-css -> null +0ms
✓ 5273 modules transformed.
✗ Build failed in 5.80s
error during build:
Build failed with 1 error:

[plugin vite-plugin-sveltekit-remote]
Error: ENOENT: no such file or directory, open '/Users/user/VSCode/project/front/.svelte-kit/output/server/chunks/remote-1mjzu66.js'
    at Object.readFileSync (node:fs:440:20)
    at PluginContextImpl.writeBundle (file:///Users/user/VSCode/project/front/node_modules/@sveltejs/kit/src/exports/vite/index.js:834:21)
    at PluginContextImpl.handler (file:///Users/user/VSCode/project/front/node_modules/vite/dist/node/chunks/dep-CErkX-mM.js:33267:13)
    at plugin (file:///Users/user/VSCode/project/front/node_modules/rolldown/dist/shared/src-DucjDcdj.mjs:3079:18)
    at plugin.<computed> (file:///Users/user/VSCode/project/front/node_modules/rolldown/dist/shared/src-DucjDcdj.mjs:3340:18)
    at aggregateBindingErrorsIntoJsError (file:///Users/user/VSCode/project/front/node_modules/rolldown/dist/shared/src-DucjDcdj.mjs:2172:18)
    at unwrapBindingResult (file:///Users/user/VSCode/project/front/node_modules/rolldown/dist/shared/src-DucjDcdj.mjs:2147:128)
    at RolldownBuild.write (file:///Users/user/VSCode/project/front/node_modules/rolldown/dist/shared/src-DucjDcdj.mjs:4137:34)
    at async buildEnvironment (file:///Users/user/VSCode/project/front/node_modules/vite/dist/node/chunks/dep-CErkX-mM.js:33029:64)
    at async Object.build (file:///Users/user/VSCode/project/front/node_modules/vite/dist/node/chunks/dep-CErkX-mM.js:33431:19)
    at async Object.buildApp (file:///Users/user/VSCode/project/front/node_modules/vite/dist/node/chunks/dep-CErkX-mM.js:33428:153)
    at async CAC.<anonymous> (file:///Users/user/VSCode/project/front/node_modules/vite/dist/node/cli.js:629:3)
error: script "build" exited with code 1

System Info

System:
    OS: macOS 26.0.1
    CPU: (10) arm64 Apple M1 Max
    Memory: 2.26 GB / 64.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 24.9.0 - /opt/homebrew/bin/node
    npm: 11.6.0 - /opt/homebrew/bin/npm
    bun: 1.3.0 - /Users/nicolasmontavon/.bun/bin/bun
  Browsers:
    Chrome: 141.0.7390.108
    Firefox: 143.0.1
    Safari: 26.0.1
  npmPackages:
    @sveltejs/adapter-node: ^5.4.0 => 5.4.0
    @sveltejs/kit: ^2.47.0 => 2.47.0
    @sveltejs/vite-plugin-svelte: ^6.2.1 => 6.2.1
    rolldown-vite:  7.1.17
    svelte: ^5.40.1 => 5.40.1

Severity

serious, but I can work around it

Additional Information

No response

[dummdidumm]

Could you check if 2.47.1 fixes the issue for you?

[vyconm]

unfortunately not, but it changed. With version 2.47.1:

✓ 5063 modules transformed.
  Analysing routes

node:internal/event_target:1122
  process.nextTick(() => { throw err; });
                           ^
Error [ERR_MODULE_NOT_FOUND]: Cannot find module '/Users/user/VSCode/project/front/.svelte-kit/output/server/chunks/remote-14tfkah.js' imported from /Users/user/VSCode/project/front/.svelte-kit/output/server/manifest-full.js
    at finalizeResolution (node:internal/modules/esm/resolve:274:11)
    at moduleResolve (node:internal/modules/esm/resolve:864:10)
    at defaultResolve (node:internal/modules/esm/resolve:990:11)
    at #cachedDefaultResolve (node:internal/modules/esm/loader:757:20)
    at ModuleLoader.resolve (node:internal/modules/esm/loader:734:38)
    at ModuleLoader.getModuleJobForImport (node:internal/modules/esm/loader:317:38)
    at onImport.tracePromise.__proto__ (node:internal/modules/esm/loader:685:36)
    at TracingChannel.tracePromise (node:diagnostics_channel:350:14)
    at ModuleLoader.import (node:internal/modules/esm/loader:684:21)
    at defaultImportModuleDynamicallyForModule (node:internal/modules/esm/utils:229:31) {
  code: 'ERR_MODULE_NOT_FOUND',
  url: 'file:///Users/user/VSCode/project/front/.svelte-kit/output/server/chunks/remote-14tfkah.js'
}

Node.js v24.10.0
error: script "build" exited with code 1

[vyconm]

the new error message looks logical, when looking at the folder structure the remote-14tfkah.js file is not at .svelte-kit/output/server/chunks/remote-14tfkah.js , but actually in .svelte-kit/output/server/remote-14tfkah.js, so not in the chunks subdirectory, along with more hashed remote.js files.

No idea what that means, just some info :)

[Refzlund]

Same issue here, seems to be caused by #14661 around https://github.com/sveltejs/kit/pull/14661/files#diff-a8ea0eaaa08527c5d6a4c1b42538f3a2310cb0b319aedd9c149a1616028e78c8R549 perhaps?

[dummdidumm]

This actually an upstream issue with Rolldown: rolldown/rolldown#6674