Package
duplexify
Turn a writable and readable stream into a streams2 duplex stream with support for async initialization and streams1/streams2 input
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 29.6m
- +50% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 4
- Direct, from package.json
- Last release
- 2 years ago
- v4.1.3
- GitHub stars
- 190
- 35 forks
- Open issues / PRs
- 8 / 4
- Contributors
- -
- Commits, last 52 weeks
- 0
Downloads
Last week 2026-09-15 to 2026-09-21
29,648,840 downloads last week, 128,749,716 in the last month. The 12-month change of +50% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 040 in total
- Latest version
- 4.1.3, 6 Mar 20242 years ago
- First published
- 7 Jul 2014
- Last push to GitHub
- 14 Jun 2024832 days before the snapshot
- Repository archived
- No
- Open issues
- 8
- Open pull requests
- 4
- Commits, last 52 weeks
- 0
- Dependents on npm
- 855
Major versions
- v4 first release 4.0.0, 4 Feb 2019
- v3 first release 3.0.0, 23 Jul 2014
- v2 first release 2.0.0, 23 Jul 2014
- v1 first release 1.0.0, 7 Jul 2014
Recent releases
| Version | Published |
|---|---|
| 4.1.3 | 6 Mar 2024 |
| 4.1.2 | 21 Jul 2021 |
| 4.1.1 | 12 Jun 2019 |
| 4.1.0 | 11 Jun 2019 |
| 4.0.0 | 4 Feb 2019 |
| 3.7.1 | 4 Feb 2019 |
| 3.7.0 | 4 Feb 2019 |
| 3.6.1 | 13 Oct 2018 |
| 3.6.0 | 4 May 2018 |
| 3.5.4 | 2 Mar 2018 |
| 3.5.3 | 10 Jan 2018 |
| 3.5.2 | 10 Jan 2018 |
| 3.5.1 | 1 Aug 2017 |
| 3.5.0 | 24 Oct 2016 |
- Module format
- CommonJSFrom package.json type, main and exports fields
- TypeScript types
- None
- Node.js engine range
- Not declared
- Runtimes
- -
- Unpacked size (npm)
- 18 kB
- Dependencies (4)
inheritsstream-shiftend-of-streamreadable-stream
npm install duplexify- jsDelivr
https://cdn.jsdelivr.net/npm/duplexify@4.1.3/ - unpkg
https://unpkg.com/duplexify@4.1.3/ - esm.sh
https://esm.sh/duplexify@4.1.3
Indexability: Indexed.