Uploading a file always appears as application/octet-stream

[leadream]

Bug report

Updates

Seems it only happens in Cloudflare workers. I tried it in a normal NodeJs environment and it works well.

Describe the bug

I tried to upload a file from a URL in Node.js. I always get an object with application/octet-stream mime type. Here is my code:

const { createClient } = require('@supabase/supabase-js')

const supabase = createClient('SUPABASE_URL', 'SUPABASE_ANON_KEY')

async function upload (url) {
    const blob = await fetch(url)
        .then(response => response.blob())
    const fileName = 'test.' +blob.type.split('/')[1]
    const result = await supabase
      .storage
      .from('avatars')
      .upload(fileName, blob, {
        cacheControl: '3600',
        contentType: blob.type,
        upsert: true,
      })
      console.log(result)
}

upload('https://tinypng.com/images/panda-happy-2x.png')

To Reproduce

Copy this code and run it in Cloudflare workers.

[leadream]

Related issue: cloudflare/workers-sdk#1085