How to upload/post image using node-fetch

postImage.js

import FromData from 'form-data'; // form-data depcrecated use alternative, works for now
import fetch from 'node-fetch'; 
import * as ft from 'file-type'; // for detecting extention of the file from the buffer
const url = 'https://i.waifu.pics/1y5O6HN.jpg'; // example link

const getbuffer =  async (url)=> await fetch(url).then(x =>x.buffer());


async function upload(){

const buffer = await getbuffer(url)

const {ext} = await ft.fileTypeFromBuffer(buffer) 
console.log('extention is ',ext);

let form = new FromData()
form.append('file-name',buffer,'tmp.'+ext); // form to post it on request


const res = await fetch('https://telegra.ph/upload', { //telegraph a free site to upload stuff, can use any other like imgbb.com but you should see what they requires in thier header
    method: 'POST',
    body: form
  })

const image = await res.json()
console.log(image[0].src,'image url')
const src = `http://telegra.ph/${image[0].src}`
console.log(src) // uploaded image

}
upload();