An error occurred when creating an attachment using Bun

[AozoraDev]

I just followed the example code about creating a status with image in this repo and ran it using Bun, but the error suddenly occurred even though the image url was valid.

984 |                     throw new MastoUnexpectedError("The server returned data with an unknown encoding. The server may be down.");
985 |                 }
986 |                 const data = this.serializer.deserialize(encoding, yield error.text());
987 |                 const { error: message, errorDescription, details } = data, additionalProperties = __rest(data, ["error", "errorDescription", "details"]);
988 |                 return new MastoHttpError({
989 |                     statusCode: error.status,
                         ^
MastoHttpError: Validation failed: File can't be blank
 cause: {}

[neet]

@AozoraDev Hi, thank you for reporting an issue. I'm wishing to extend the support for non-Node.js platforms, but since I don't catch up with Bun, it's a really good experience.

Can you try this code as well? I changed fs.readFileSync to Bun-native Bun.file API and wrapped it by Blob.

import { createRestAPIClient } from "masto";

const masto = createRestAPIClient({
  url: "YOUR URL",
  accessToken: "YOUR TOKEN",
  log: "debug",
});

const attachment = await masto.v2.media.create({
  file: new Blob([Bun.file("./1.png")]),
  //    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  description: "Some image",
});

// Publish!
const status = await masto.v1.statuses.create({
  status: "Hello from #mastojs!",
  visibility: "private",
  mediaIds: [attachment.id],
});

console.log(status);

I locally verified this works, but this is still strange as BunFile should be compatible with Blob. Let me take some time to look into this issue (though this could be a bug from either Mastodon/Bun).

[AozoraDev]

Yeah it works but somehow there's an error in the vs code.

Type 'Blob' is not assignable to type 'string | Blob'.
  Type 'Blob' is missing the following properties from type 'Blob': json, formDatats(2322)
index.d.ts(3837, 14): The expected type comes from property 'file' which is declared here on type 'CreateMediaAttachmentParams'

Well, i'm new at ts, so..... 👉👈

[AozoraDev]

Well, using as Blob fixed it in the vscode but not in Bun.

How confusing....