Unzip a stream in Node.JS

unzip.js

import * as request from 'request';
import * as shx from 'shelljs';
import * as fs from 'fs';
import * as unzip from 'unzipper';
import * as through from 'through2';
import * as Vinyl from 'vinyl';

function downloadLatestArtifact(gitlabToken: string, tokenType: 'PRIVATE-TOKEN' | 'JOB-TOKEN') {
  // Download and unzip
  const files = [];

  return new Promise((resolve, reject) => {
    request.get('https://gitlab.com/travelmat.es/frontend/-/jobs/artifacts/master/download?job=build_universal_prod', {
      headers: {
        [tokenType]: gitlabToken
      }
    }).pipe(unzip.Parse())
      .on('entry', entry => {
        const chunks = [];
        entry.pipe(through.obj((chunk, enc, cb) => {
          chunks.push(chunk);
          cb();
        }, cb => {
          if (entry.type == 'File') {
            files.push(new Vinyl({
              path: entry.path,
              contents: Buffer.concat(chunks)
            }));
          }
          cb();
        }))
      })
      .on('error', e => {
        reject(e);
      })
      .on('close', () => {
        resolve(files);
      });
  });
}