Using the Elysia file() wrapper breaks t.File() schema

[dy0gu]

What version of Elysia is running?

1.2.10

What platform is your computer?

Microsoft Windows NT 10.0.22631.0 x64

What steps can reproduce the bug?

Create a simple GET request for a file:

.get("/favicon.ico", () => file("src/assets/images/favicon.ico"), {
  response: t.File({
    description: "Returns a logo for the API to display in browsers.",
  }),
})

What is the expected behavior?

No typescript or runtime errors.

What do you see instead?

Typescript outputs the following error, among others:

...

Type 'ElysiaFile' is not assignable to type 'Response | File | BunFile'.

...

Ignoring the type error and trying to access the route at runtime anyways returns this json:

{
  "type": "validation",
  "on": "response",
  "summary": "Expected kind 'File'",
  "property": "root",
  "message": "Expected kind 'File'",
  "expected": "File",
  "found": {
    "path": "src/assets/images/favicon.ico",
    "value": {}
  },
  "errors": [
    {
      "summary": "Expected kind 'File'",
      "type": 31,
      "schema": {
        "default": "File",
        "description": "Returns a logo for the API to display in browsers.",
        "type": "string",
        "format": "binary",
        "additionalProperties": false
      },
      "path": "",
      "value": {
        "path": "src/assets/images/favicon.ico",
        "value": {}
      },
      "message": "Expected kind 'File'",
      "errors": []
    }
  ]
}

Additional information

I've been enjoying the development experience with Elysia lately, especially with the efforts you've been making to add wrappers around Bun and Node to maintain a runtime independence.

It struck me as odd that there was no open issue for this problem, I tried searching hard for a while before opening this. The official Elysia docs already use the file() wrapper the framework provides so I'm surprised no one has ran into this case yet.

I understand Node support is not a priority, if this qualifies as that, but hopefully the t.File() type can be easily updated to include the wrapper as I personally prefer not relying on runtime syntax as a best practice. Which I try to do whenever possible with a framework that provides as much out of the box as Elysia does.

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

👍