* feat: add npm downloads (by author) badge * Update services/npm-stat/npm-stat-downloads.service.js Co-authored-by: chris48s <chris48s@users.noreply.github.com> * test: add test cases for NpmStatDownloads helper getTotalDownloads * refactor: using dayjs to get from && until date string * feat: remove support of dt --------- Co-authored-by: chris48s <chris48s@users.noreply.github.com>