Package
symbol-observable
Symbol.observable ponyfill
Key numbers
As of 25 Sept 2026
- Weekly downloads
- 16.5m
- +8% over 12 months
- Gzip bundle size
- -
- No Bundlephobia data
- Dependencies
- 0
- Direct, from package.json
- Last release
- 5 years ago
- v4.0.0
- GitHub stars
- 187
- 31 forks
- Open issues / PRs
- 1 / 2
- Contributors
- -
- Commits, last 52 weeks
- 0
Downloads
Last week 2026-09-15 to 2026-09-21
16,505,350 downloads last week, 71,264,275 in the last month. The 12-month change of +8% compares the average of the last 4 weeks with the first 4 weeks of the series.
- Releases, last 12 months
- 019 in total
- Latest version
- 4.0.0, 15 Apr 20215 years ago
- First published
- 19 Nov 2015
- Last push to GitHub
- 2 Nov 20221,422 days before the snapshot
- Repository archived
- No
- Open issues
- 1
- Open pull requests
- 2
- Commits, last 52 weeks
- 0
- Dependents on npm
- 472
Major versions
- v4 first release 4.0.0, 15 Apr 2021
- v3 first release 3.0.0, 2 Nov 2020
- v2 first release 2.0.0, 1 Sept 2020
- v1 first release 1.0.0, 13 Jun 2016
- v0 first release 0.1.0, 19 Nov 2015
Recent releases
| Version | Published |
|---|---|
| 4.0.0 | 15 Apr 2021 |
| 3.0.0 | 2 Nov 2020 |
| 2.0.3 | 30 Sept 2020 |
| 2.0.2 | 29 Sept 2020 |
| 2.0.1 | 4 Sept 2020 |
| 2.0.0 | 1 Sept 2020 |
| 1.2.0 | 26 Jan 2018 |
| 1.1.0 | 28 Nov 2017 |
| 1.0.4 | 13 Oct 2016 |
| 1.0.3 | 11 Oct 2016 |
| 1.0.2 | 9 Aug 2016 |
| 1.0.1 | 15 Jun 2016 |
| 1.0.0 | 13 Jun 2016 |
| 0.2.4 | 25 Apr 2016 |
- Module format
- ESM + CommonJSFrom package.json type, main and exports fields
- TypeScript types
- Bundled
- Node.js engine range
- >=0.10
- Runtimes
- -
- Unpacked size (npm)
- 16 kB
- Dependencies (0)
- None
npm install symbol-observable- jsDelivr
https://cdn.jsdelivr.net/npm/symbol-observable@4.0.0/ - unpkg
https://unpkg.com/symbol-observable@4.0.0/ - esm.sh
https://esm.sh/symbol-observable@4.0.0
Indexability: Indexed.