All files / src/hooks/getSlot getSlot.ts

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import { hub } from '../hub'
 
import type { Rune, Slot } from '../../RuneHub'
 
/**
 * Gets an existing slot for a rune without creating it.
 * Returns undefined if the slot doesn't exist yet.
 * @template T - The rune function type
 * @param rune - The rune to get the slot for
 * @returns The slot if it exists, undefined otherwise
 * @example
 * ```ts
 * const count = () => 5
 * getSlot(count) // undefined (not created yet)
 * get(count) // 5 (creates slot)
 * getSlot(count) // Slot instance
 * ```
 */
export function getSlot<T extends Rune> (rune: T): Slot<ReturnType<T>> | undefined {
  const currentHub = hub()
 
  return currentHub.slots.get(rune) as Slot<ReturnType<T>>
}