signal

The signal method allows creating reactive variables that automatically update their subscribers when the value changes.

Syntax

engine.signal(initialValue, optionsOrName)

Parameters

• initialValue (T): The initial value of the signal.
• optionsOrName (string | SignalOptions<T>): Name or options for the signal.

Return Value

The method returns a Signal object with the following properties and methods:

• value: The value of the signal.
• subscribe(cb: (val: T) => void): Subscribe to changes in the signal's value. Returns a cleanup function.

Examples

Example in plain JavaScripts

const engine = new ReactiveEngine();
const count = engine.signal(0);

count.subscribe((newValue) => {
  console.log(`Count is now ${newValue}`);
});

count.value++; // Outputs: Count is now 1

Additional Information

Signals are a fundamental part of the reactive system, allowing automatic updates to UI and other dependencies when values change.