multerFix.ts

(req, res, next) => {
  let parsing = false;
  const RE_BOUNDARY = /^multipart\/.+?(?:; boundary=(?:(?:"(.+)")|(?:([^\s]+))))$/i;
  if (req.headers['content-type']) {
    const regexResult = RE_BOUNDARY.exec(req.headers['content-type']);
    if (regexResult) {
      parsing = true;
      const boundary = regexResult[1] || regexResult[2];
      const d = new Dicer({ boundary });
      d.on('part', p => {
        p.on('error', (e) => {
          console.log('got part error', e);
        });
      });
      d.on('finish', () => {
        next();
      });
      req.pipe(d);
    }
  }

  if (!parsing) {
    next();
  }
},