Package
eventsource-parser
Streaming, source-agnostic EventSource/Server-Sent Events parser
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 52.2m
- +551% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 0
- Direct, from package.json
- Last release
- 9 days ago
- v4.1.1
- GitHub stars
- 506
- 27 forks
- Open issues / PRs
- 0 / 0
- Contributors
- 10
- Commits, last 52 weeks
- 41
Downloads
Last week 2026-09-15 to 2026-09-21
52,220,656 downloads last week, 254,296,590 in the last month. The 12-month change of +551% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 724 in total
- Latest version
- 4.1.1, 15 Sept 20269 days ago
- First published
- 30 Sept 2022
- Last push to GitHub
- 15 Sept 20269 days before the snapshot
- Repository archived
- No
- Open issues
- 0
- Open pull requests
- 0
- Commits, last 52 weeks
- 41
- Dependents on npm
- 945
Major versions
- v4 first release 4.0.0, 10 Aug 2026
- v3 first release 3.0.0, 19 Oct 2024
- v2 first release 2.0.0, 7 Aug 2024
- v1 first release 1.0.0, 23 Mar 2023
- v0 first release 0.0.2, 30 Sept 2022
Recent releases
| Version | Published |
|---|---|
| 4.1.1 | 15 Sept 2026 |
| 4.1.0 | 20 Aug 2026 |
| 4.0.0 | 10 Aug 2026 |
| 3.1.1 | 10 Aug 2026 |
| 3.1.0 | 27 May 2026 |
| 3.0.8 | 19 Apr 2026 |
| 3.0.7 | 17 Apr 2026 |
| 3.0.6 | 29 Aug 2025 |
| 3.0.5 | 18 Aug 2025 |
| 3.0.3 | 25 Jun 2025 |
| 3.0.2 | 14 May 2025 |
| 3.0.1 | 27 Mar 2025 |
| 3.0.0 | 19 Oct 2024 |
| 2.0.1 | 7 Aug 2024 |
- Module format
- ESM onlyFrom package.json type, main and exports fields
- TypeScript types
- Bundled
- Node.js engine range
- >=22.12
- Runtimes
- -
- Unpacked size (npm)
- 94 kB
- Dependencies (0)
- None
npm install eventsource-parserCDN
jsDelivr: 243.1k requests in 30 days
- jsDelivr
https://cdn.jsdelivr.net/npm/eventsource-parser@4.1.1/ - unpkg
https://unpkg.com/eventsource-parser@4.1.1/ - esm.sh
https://esm.sh/eventsource-parser@4.1.1
Indexability: Indexed.