doc/api/core/operators/materialize.md
# This is RxJS v 4. [Find the latest version here](https://github.com/reactivex/rxjs)### `Rx.Observable.prototype.materialize()`[Ⓢ](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/materialize.js "View in source") Materializes the implicit notifications of an observable sequence as explicit notification values. #### Returns*(`Observable<Notification>`)*: An observable sequence containing the materialized notification values from the source sequence. #### Example```jsvar source = Rx.Observable.of(1,2,3).materialize(); var subscription = source.subscribe( function (x) { console.log('Next: %s', x); }, function (err) { console.log('Error: %s', err); }, function () { console.log('Completed'); }); // => Next OnNext(1)// => Next OnNext(2)// => Next OnNext(3)// => Next OnCompleted()// => Completed```### Location File:- [`/src/core/linq/observable/materialize.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/src/core/linq/observable/materialize.js) Dist:- [`rx.all.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.js)- [`rx.all.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.all.compat.js)- [`rx.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.js)- [`rx.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.compat.js)- [`rx.lite.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.js)- [`rx.lite.compat.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/dist/rx.lite.compat.js) NPM Packages:- [`rx`](https://www.npmjs.org/package/rx) NuGet Packages:- [`RxJS-Complete`](http://www.nuget.org/packages/RxJS-Complete/)- [`RxJS-Main`](http://www.nuget.org/packages/RxJS-Main/)- [`RxJS-Lite`](http://www.nuget.org/packages/RxJS-Lite/) Unit Tests:- [`/tests/observable/materialize.js`](https://github.com/Reactive-Extensions/RxJS/blob/master/tests/observable/materialize.js)