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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 | 4x 4x 74x | import { slot } from '../slot'
import type { Destructor, Event, Listener, Rune } from '../../RuneHub'
/**
* Activates a rune by subscribing to it.
* Keeps the rune and its dependencies active until unsubscribed.
* @param rune - The rune to activate
* @returns A destructor function to deactivate and unsubscribe
* @example
* ```ts
* const count = () => 5
* const effect = () => console.log('Count:', get(count))
*
* const off = on(effect) // logs: 'Count: 5'
* set(count, 10) // logs: 'Count: 10'
* off() // stop effect
* ```
*/
export function on (rune: Rune): Destructor
/**
* Subscribes to a specific event on a rune.
* @param rune - The rune to subscribe to
* @param event - The event to listen for ('init', 'update', 'call', 'change', 'clear', 'destroy', 'up', 'down')
* @param listener - The listener function to call when the event occurs
* @returns A destructor function to unsubscribe
* @example
* ```ts
* const count = () => 5
* const off = on(count, 'change', () => console.log('changed'))
* set(count, 10) // logs: 'changed'
* off() // unsubscribe
* ```
*/
export function on (rune: Rune, event: Event, listener: Listener): Destructor
export function on (rune: Rune, event?: Event, listener?: Listener): Destructor {
return slot(rune).on(event!, listener!)
}
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