# packages/core/src/lib/hooks/use-const.ts This is the source snapshot used to build these API details. [View this revision on GitHub](https://github.com/benlesh/pibbl/blob/272a94aaf62e0bd6ad8726a4c607a76a9ec44ca1/packages/core/src/lib/hooks/use-const.ts#L13). [Back to reference](/reference/hooks/use-const/)

1 import type { PibblComponent } from '../element/types.js';
2 import { untracked } from '../signals/graph.js';
3 import { useHookSlot, withHooksForbidden } from './hook-slot.js';
4 
5 /**
6  * Creates one non-reactive value for the lifetime of a mounted hook slot.
7  *
8  * @param create - Initializer called once for this mounted hook slot.
9  * @returns The value retained by this hook slot.
10  *
11  * @see {@link PibblComponent}
12  */
13 export function useConst<T>(create: () => T): T {
14   return useHookSlot(
15     'const',
16     () => untracked(() => withHooksForbidden(
17       'Pibbl hooks cannot be called inside a useConst factory.',
18       create,
19     )),
20   ).value;
21 }
22

## Documentation version Documentation built with @pibbl/core 0.0.2, revision 272a94a. ALPHA — NOT FOR PRODUCTION USE.