ratatosk

... scampers along Yggdrasil to carry messages and gossip between Nidhug at the roots and the eagle perched in the branches.

This library contains a few specialized but useful features using RxJs to pass information.

BroadcastingSet

The BroadcastingSet maintains a set of objects with IDs, and exposes Observables signaling changes to the elements in the set.

Observable store

An object which emits its data (or subsets of it) as each field is set or changed. This can be used to maintain application state or configuration.
(This tastes a little Redux-y, but is implemented more as a utility library leveraging RxJs than as a framework).

Url fragment

Functionality to manipulate the URL hash fragment, treating it as a key/value store and getting information about changes to it.
An example of use is maintaining map position and zoom level in an OpenLayers application this way, allowing users to deep-link to a specific position.

Recently Used list

Keeps track of most recently used items, accorting to when they are "touched".

Usage

Install with

npm install @northtech/ratatosk@^2.1

Install peer dependency if needed:

npm install rxjs@^7

TypeDocs at https://doc.northtech.dk/ratatosk/