* Used to stitch together functional operators into a chain. * * ## Example * * ```ts * import { interval, filter, map, scan } from 'rx

* Performs an HTTP GET using the * [XMLHttpRequest](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) in * global scope by defaul

* Used as a NON-CANCELLABLE means of subscribing to an observable, for use with * APIs that expect promises, like `async/await`. You cannot unsubsc

* Adds a finalizer to this subscription, so that finalization will be unsubscribed/called * when this subscription is unsubscribed. If this subscri

* Returns a timestamp as a number. * * This is used by types like `ReplaySubject` or operators like `timestamp` to calculate * the amount of

* Creates a new Observable with this Subject as the source. You can do this * to create custom Observer-side logic of the Subject and conceal it fr

* Performs an HTTP DELETE using the * [XMLHttpRequest](https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest) in * global scope by def

* (Idempotent) Calling this method will connect the underlying source observable to all subscribed consumers * through an underlying {@link Subject

* The {@link Observer} callback to receive notifications of type `error` from * the Observable, with an attached `Error`. Notifies the Observer tha

* The {@link Observer} callback to receive a valueless notification of type * `complete` from the Observable. Notifies the Observer that the Observ

* The {@link Observer} callback to receive notifications of type `next` from * the Observable, with a value. The Observable may call this method 0