Interface Readable<T>

A readonly implementation of the observable pattern. Frameworks and vanilla consumers use this to read state and subscribe to changes.

interface Readable<T> {
get(): T;
subscribe(listener: (() => void)): (() => void);
}

Type Parameters

T

Index

Methods

Methods

get

get(): T
Synchronously returns the current value.

Returns T

subscribe

subscribe(listener): (() => void)
Subscribes to changes.
Parameters
- listener: (() => void)
  A callback that is invoked when the value changes.
  - - (): void
    - Returns void
Returns (() => void)
An unsubscribe function to clean up the listener.
- - (): void
  - Returns void