ObservableJs

Observables for Javascript and Typescript

A library that creates a Observable class that let's you subscribe to a value and get notified when that value changes

Usage

Create an Observable

const  observable  =  new  Observable<T>(initalValue);

T - The type of the value stored in the observable

Change the value of an Observable

const  observable  =  new  Observable<T>(initalValue);
observable.mutate(operation);

operation:(val \<T>)=>T - An operation to be applied on the current value in the Observable. Val is the current value in that Observable. An operation should return a new value for that observable

Subscribing to an Observable

const  observable  =  new  Observable<T>(initalValue);
observable.subscribe(handler,options?)

handler : (value:T)=>void | Promise\<any> - A function that is called whenever a new value (val) is being issued by the Observable options:

• await: boolean (default: false) - Whether or not the result of the handler should be awaited, in case it returns a Promise
• fireOnSubscribe : boolean (default: false) - Whether or not the hanlder should be called after the subscription
• Priority : number (default: 0) - A value that determins the order in which the handlers should be executed. Greater priority means this handler will be executed sooner