Missed dependency `file-type`

[mirismaili]

What version of Elysia is running?

1.4.8

What platform is your computer?

node:24.8.0-alpine (Docker image)

What environment are you using

Node.js 24.8.0

Are you using dynamic mode?

No

What steps can reproduce the bug?

After I upgrading Elysia from v1.4.5 to v1.4.8 I encountered this error on CI pipeline:

  Rsbuild v1.5.9

info    build started...
error   Build error:
File: javascript/esm|/app/node_modules/elysia/dist/index.mjs:1:1
  × Module not found: Can't resolve 'file-type' in '/app/node_modules/elysia/dist'
      ╭─[1441:30]
 1439 │     "[Elysia] Attempt to validate file type without 'file-type'. This may lead to security risks. We recommend installing 'file-type' to properly validate file extension."
 1440 │   ), _fileTypeFromBlobWarn = !0);
 1441 │ }, loadFileType = async () => import("file-type").then((x) => (_fileTypeFromBlob = x.fileTypeFromBlob, _fileTypeFromBlob)).catch(warnIfFileTypeIsNotInstalled), _fileTypeFromBlob, fileTypeFromBlob = (file2) => _fileTypeFromBlob ? _fileTypeFromBlob(file2) : loadFileType().then((mod) => {
      ·                               ───────────────────
 1442 │   if (mod) return mod(file2);
 1443 │ }), fileType = async (file2, extension, name = file2?.name ?? "") => {
      ╰────

I installed file-type and the issue fixed. Is it correctly listed in devDependencies?

What is the expected behavior?

The project should build w/o need to install file-type.

What do you see instead?

No response

Additional information

No response

Have you try removing the node_modules and bun.lockb and try again yet?

No response

[Rouret]

Using this on 1.4.9, I don't have any problem.

[SaltyAom]

We intentionally exclude file-type as an optional dependency

If your code uses file validation, you would need to install file-type to validate the file correctly
If not, then it would reduce a lot of bundle size

Otherwise, you can also list it as external dependency for your bundler as well