# readable-stream ***Node.js core streams for userland*** [](https://travis-ci.com/nodejs/readable-stream) [](https://nodei.co/npm/readable-stream/) [](https://nodei.co/npm/readable-stream/) [](https://saucelabs.com/u/readabe-stream) ```bash npm install --save readable-stream ``` This package is a mirror of the streams implementations in Node.js. Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.14.2/docs/api/stream.html). If you want to guarantee a stable streams base, regardless of what version of Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html). As of version 2.0.0 **readable-stream** uses semantic versioning. ## Version 3.x.x v3.x.x of `readable-stream` supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows: 1. Error codes: https://github.com/nodejs/node/pull/13310, https://github.com/nodejs/node/pull/13291, https://github.com/nodejs/node/pull/16589, https://github.com/nodejs/node/pull/15042, https://github.com/nodejs/node/pull/15665, https://github.com/nodejs/readable-stream/pull/344 2. 'readable' have precedence over flowing https://github.com/nodejs/node/pull/18994 3. make virtual methods errors consistent https://github.com/nodejs/node/pull/18813 4. updated streams error handling https://github.com/nodejs/node/pull/18438 5. writable.end should return this. https://github.com/nodejs/node/pull/18780 6. readable continues to read when push('') https://github.com/nodejs/node/pull/18211 7. add custom inspect to BufferList https://github.com/nodejs/node/pull/17907 8. always defer 'readable' with nextTick https://github.com/nodejs/node/pull/17979 ## Version 2.x.x v2.x.x of `readable-stream` supports all Node.js version from 0.8, as well as evergreen browsers and IE 10 & 11. ### Big Thanks Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce] # Usage You can swap your `require('stream')` with `require('readable-stream')` without any changes, if you are just using one of the main classes and functions. ```js const { Readable, Writable, Transform, Duplex, pipeline, finished } = require('readable-stream') ```` Note that `require('stream')` will return `Stream`, while `require('readable-stream')` will return `Readable`. We discourage using whatever is exported directly, but rather use one of the properties as shown in the example above. # Streams Working Group `readable-stream` is maintained by the Streams Working Group, which oversees the development and maintenance of the Streams API within Node.js. The responsibilities of the Streams Working Group include: * Addressing stream issues on the Node.js issue tracker. * Authoring and editing stream documentation within the Node.js project. * Reviewing changes to stream subclasses within the Node.js project. * Redirecting changes to streams from the Node.js project to this project. * Assisting in the implementation of stream providers within Node.js. * Recommending versions of `readable-stream` to be included in Node.js. * Messaging about the future of streams to give the community advance notice of changes. <a name="members"></a> ## Team Members * **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt; - Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242 * **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt; * **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt; - Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E * **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt; * **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt; [sauce]: https://saucelabs.com