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agent-skills/skills/vueuse-functions/references/useIDBKeyval.md
Jason Woltje f5792c40be feat: Complete fleet — 94 skills across 10+ domains
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Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-16 16:27:42 -06:00

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---
category: '@Integrations'
---
# useIDBKeyval
Wrapper for [`idb-keyval`](https://www.npmjs.com/package/idb-keyval).
## Install idb-keyval as a peer dependency
```bash
npm install idb-keyval@^6
```
## Usage
```ts
import { useIDBKeyval } from '@vueuse/integrations/useIDBKeyval'
// bind object
const { data: storedObject, isFinished } = useIDBKeyval('my-idb-keyval-store', { hello: 'hi', greeting: 'Hello' })
// update object
storedObject.value.hello = 'hola'
// bind boolean
const flag = useIDBKeyval('my-flag', true) // returns Ref<boolean>
// bind number
const count = useIDBKeyval('my-count', 0) // returns Ref<number>
// awaiting IDB transaction
await count.set(10)
console.log('IDB transaction finished!')
// delete data from idb storage
storedObject.value = null
```
## Type Declarations
```ts
interface Serializer<T> {
read: (raw: unknown) => T
write: (value: T) => unknown
}
export interface UseIDBOptions<T> extends ConfigurableFlush {
/**
* Watch for deep changes
*
* @default true
*/
deep?: boolean
/**
* On error callback
*
* Default log error to `console.error`
*/
onError?: (error: unknown) => void
/**
* Use shallow ref as reference
*
* @default false
*/
shallow?: boolean
/**
* Write the default value to the storage when it does not exist
*
* @default true
*/
writeDefaults?: boolean
/**
* Custom data serialization
*/
serializer?: Serializer<T>
}
export interface UseIDBKeyvalReturn<T> {
data: RemovableRef<T>
isFinished: ShallowRef<boolean>
set: (value: T) => Promise<void>
}
/**
*
* @param key
* @param initialValue
* @param options
*/
export declare function useIDBKeyval<T>(
key: IDBValidKey,
initialValue: MaybeRefOrGetter<T>,
options?: UseIDBOptions<T>,
): UseIDBKeyvalReturn<T>
```