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fuel-price/.agents/skills/vueuse-functions/references/useIDBKeyval.md
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docs: add advanced skills for Vitest, Pinia, and Vue built-ins
Add comprehensive reference documentation for:
- Vitest: environments, projects/workspaces, type testing, vi utilities
- Pinia: HMR, Nuxt integration, SSR setup
- Vue: built-in components (Transition, Teleport, Suspense, KeepAlive) and advanced directives
2026-04-11 16:28:36 +01:00

1.8 KiB

category
category
@Integrations

useIDBKeyval

Wrapper for idb-keyval.

Install idb-keyval as a peer dependency

npm install idb-keyval@^6

Usage

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

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>