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Manual » Installation

ES6 via npm

npm install rxjs-es

To import the entire core set of functionality:

import Rx from 'rxjs/Rx';


To import only what you need by patching (this is useful for size-sensitive bundling):

import { Observable} from 'rxjs/Observable';
import 'rxjs/add/observable/of';
import 'rxjs/add/operator/map';

Observable.of(1,2,3).map(x => x + '!!!'); // etc

To import what you need and use it with proposed bind operator:

Note: This additional syntax requires transpiler support and this syntax may be completely withdrawn from TC39 without notice! Use at your own risk.

import { Observable } from 'rxjs/Observable';
import { of } from 'rxjs/observable/of';
import { map } from 'rxjs/operator/map';

Observable::of(1,2,3)::map(x => x + '!!!'); // etc

CommonJS via npm

npm install rxjs

Import all core functionality:

var Rx = require('rxjs/Rx');

Rx.Observable.of(1,2,3); // etc

Import only what you need and patch Observable (this is useful in size-sensitive bundling scenarios):

var Observable = require('rxjs/Observable').Observable;
// patch Observable with appropriate methods

Observable.of(1,2,3).map(function (x) { return x + '!!!'; }); // etc

Import operators and use them manually you can do the following (this is also useful for bundling):

var of = require('rxjs/observable/of').of;
var map = require('rxjs/operator/map').map;

map.call(of(1,2,3), function (x) { return x + '!!!'; });

You can also use the above method to build your own Observable and export it from your own module.

CommonJS with TypeScript

If you recieve an error like error TS2304: Cannot find name 'Promise' or error TS2304: Cannot find name 'Iterable' when using RxJS you may need to install a supplemental set of typings.

  1. For typings users:

    typings install es6-shim --ambient

  2. If you're not using typings the interfaces can be copied from /es6-shim/es6-shim.d.ts.

  3. Add type definition file included in tsconfig.json or CLI argument.

All Module Types (CJS/ES6/AMD/TypeScript) via npm

To install this library via npm version 3, use the following command:

npm install @reactivex/rxjs

If you are using npm version 2 before this library has achieved a stable version, you need to specify the library version explicitly:

npm install @reactivex/rxjs@5.0.0-beta.1


For CDN, you can use unpkg. Just replace version with the current version on the link below:

For RxJS 5.0.0-beta.1 through beta.11: https://unpkg.com/@reactivex/rxjs@version/dist/global/Rx.umd.js

For RxJS 5.0.0-beta.12 and higher: https://unpkg.com/@reactivex/rxjs@version/dist/global/Rx.js