webp2mp4.js

import fetch from 'node-fetch';
import { FormData, Blob } from 'formdata-node';
import { JSDOM } from 'jsdom';
/**
 * 
 * @param {Buffer|String} source 
 */
async function webp2mp4(source) {
  let form = new FormData()
  let isUrl = typeof source === 'string' && /https?:\/\//.test(source)
  const blob = !isUrl && new Blob([source.toArrayBuffer()])
  form.append('new-image-url', isUrl ? blob : '')
  form.append('new-image', isUrl ? '' : blob, 'image.webp')
  let res = await fetch('https://s6.ezgif.com/webp-to-mp4', {
    method: 'POST',
    body: form
  })
  let html = await res.text()
  let { document } = new JSDOM(html).window
  let form2 = new FormData()
  let obj = {}
  for (let input of document.querySelectorAll('form input[name]')) {
    obj[input.name] = input.value
    form2.append(input.name, input.value)
  }
  let res2 = await fetch('https://ezgif.com/webp-to-mp4/' + obj.file, {
    method: 'POST',
    body: form2
  })
  let html2 = await res2.text()
  let { document: document2 } = new JSDOM(html2).window
  return new URL(document2.querySelector('div#output > p.outfile > video > source').src, res2.url).toString()
}

async function webp2png(source) {
  let form = new FormData()
  let isUrl = typeof source === 'string' && /https?:\/\//.test(source)
  const blob = !isUrl && new Blob([source.toArrayBuffer()])
  form.append('new-image-url', isUrl ? blob : '')
  form.append('new-image', isUrl ? '' : blob, 'image.webp')
  let res = await fetch('https://s6.ezgif.com/webp-to-png', {
    method: 'POST',
    body: form
  })
  let html = await res.text()
  let { document } = new JSDOM(html).window
  let form2 = new FormData()
  let obj = {}
  for (let input of document.querySelectorAll('form input[name]')) {
    obj[input.name] = input.value
    form2.append(input.name, input.value)
  }
  let res2 = await fetch('https://ezgif.com/webp-to-png/' + obj.file, {
    method: 'POST',
    body: form2
  })
  let html2 = await res2.text()
  let { document: document2 } = new JSDOM(html2).window
  return new URL(document2.querySelector('div#output > p.outfile > img').src, res2.url).toString()
}

export {
  webp2mp4, 
  webp2png
}