# @rxjs/observable-polyfill

> Conditional Web Platform Observable fallback for RxJS 9

Latest version **9.0.0-beta.0** (published 2026-08-04) · Apache-2.0 license · 0 weekly downloads

_The full health report (score, vulnerabilities, README, dependency tree, version history) is being computed; this document will grow once it lands._

## Install

```sh
npm install @rxjs/observable-polyfill
pnpm add @rxjs/observable-polyfill
yarn add @rxjs/observable-polyfill
bun add @rxjs/observable-polyfill
```

## Facts

| | |
|---|---|
| Version | 9.0.0-beta.0 |
| Published | 2026-08-04 |
| First published | 2026-08-04 |
| Weekly downloads | 0 |
| License | Apache-2.0 |
| TypeScript types | none |
| Module format | ESM |
| Node | >=22.13.0 |
| Dependencies | 0 |
| Unpacked size | 130.4 KB |
| Author | Ben Lesh |
| Maintainers | mattpodwysocki, blesh |
| Keywords | Rx, RxJS, ReactiveX, ReactiveExtensions, Streams, Observables, Observable, Stream |

## Links

- npm: https://www.npmjs.com/package/@rxjs/observable-polyfill
- Repository: https://github.com/ReactiveX/rxjs
- Homepage: https://github.com/ReactiveX/rxjs/tree/master/packages/observable-polyfill#readme
- npm.io page: https://npm.io/package/@rxjs/observable-polyfill

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_Source: https://npm.io/package/@rxjs/observable-polyfill · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._