const axios = require('axios');
const fs = require('fs');
const FormData = require('form-data');

async function nsfwCheck(url) {
  const res = await axios.get(url, { responseType: 'arraybuffer' });
  const buffer = Buffer.from(res.data);
  const form = new FormData();
  form.append('file', buffer, 'image.jpg');
  const { data } = await axios.post('https://www.nyckel.com/v1/functions/o2f0jzcdyut2qxhu/invoke', form, {
    headers: form.getHeaders()
  });
  return data;
}

nsfwCheck('https://wearedevs.lol/avatar.png')
  .then(r => console.log(JSON.stringify(r, null, 2)))
  .catch(e => console.error(e.message));