code: async function _uploadFiles(dir, presignedPosts) {
    const promises = [];
    const limit = pLimit(5);
    let uploaded = false;
  
    Object.keys(presignedPosts).forEach(async (path) => {
      const { post } = presignedPosts[path];
  
      if (!post) {
        Logger.tagged('exists', path, 'blue');
      } else {
        const filePath = resolve(dir, path);
        const form = new FormData();
  
        Utils.forEach(post.fields, (value, key) => { form.append(key, value); });
        form.append('file', fs.createReadStream(filePath));
  
        const promise = limit(() => got.post(post.url, { body: form }).then(() => {
          Logger.tagged('upload', path);
        }));
  
        promises.push(promise);
        uploaded = true;
      }
    });
  
    await Promise.all(promises);
    return uploaded;
  }
docs: Upload files to S3
  
  @param {Object} paths
  @param {Object} presignedPosts