Function for reading bmp and ico and returning a sharp instance
npm install @misskey-dev/sharp-read-bmp
import { sharpBmp } from '@misskey-dev/sharp-read-bmp';
import { fileTypeFromFile } from 'file-type';
const { mime } = await fileTypeFromFile('favicon.ico');
const sharpCtx = await sharpBmp('favicon.ico', mime);
console.log(await sharpCtx.metadata());