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useAsyncState ​

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Last Changed
4 days ago

Reactive async state. Will not block your setup function and will trigger changes once the promise is ready. The state is a shallowRef by default.

Demo ​

Ready: false
Loading: true
{}

Usage ​

ts
import { useAsyncState } from '@vueuse/core'
import axios from 'axios'

const { state, isReady, isLoading } = useAsyncState(
  axios
    .get('https://jsonplaceholder.typicode.com/todos/1')
    .then(t => t.data),
  { id: null },
)

Type Declarations ​

Show Type Declarations
typescript
export interface UseAsyncStateReturnBase<
  Data,
  Params extends any[],
  Shallow extends boolean,
> {
  state: Shallow extends true ? Ref<Data> : Ref<UnwrapRef<Data>>
  isReady: Ref<boolean>
  isLoading: Ref<boolean>
  error: Ref<unknown>
  execute: (delay?: number, ...args: Params) => Promise<Data>
}
export type UseAsyncStateReturn<
  Data,
  Params extends any[],
  Shallow extends boolean,
> = UseAsyncStateReturnBase<Data, Params, Shallow> &
  PromiseLike<UseAsyncStateReturnBase<Data, Params, Shallow>>
export interface UseAsyncStateOptions<Shallow extends boolean, D = any> {
  /**
   * Delay for executing the promise. In milliseconds.
   *
   * @default 0
   */
  delay?: number
  /**
   * Execute the promise right after the function is invoked.
   * Will apply the delay if any.
   *
   * When set to false, you will need to execute it manually.
   *
   * @default true
   */
  immediate?: boolean
  /**
   * Callback when error is caught.
   */
  onError?: (e: unknown) => void
  /**
   * Callback when success is caught.
   * @param {D} data
   */
  onSuccess?: (data: D) => void
  /**
   * Sets the state to initialState before executing the promise.
   *
   * This can be useful when calling the execute function more than once (for
   * example, to refresh data). When set to false, the current state remains
   * unchanged until the promise resolves.
   *
   * @default true
   */
  resetOnExecute?: boolean
  /**
   * Use shallowRef.
   *
   * @default true
   */
  shallow?: Shallow
  /**
   *
   * An error is thrown when executing the execute function
   *
   * @default false
   */
  throwError?: boolean
}
/**
 * Reactive async state. Will not block your setup function and will trigger changes once
 * the promise is ready.
 *
 * @see https://vueuse.org/useAsyncState
 * @param promise         The promise / async function to be resolved
 * @param initialState    The initial state, used until the first evaluation finishes
 * @param options
 */
export declare function useAsyncState<
  Data,
  Params extends any[] = [],
  Shallow extends boolean = true,
>(
  promise: Promise<Data> | ((...args: Params) => Promise<Data>),
  initialState: Data,
  options?: UseAsyncStateOptions<Shallow, Data>,
): UseAsyncStateReturn<Data, Params, Shallow>

Source ​

Source • Demo • Docs

Contributors ​

Anthony Fu
丶远方
Flamenco
machete
Anthony Fu
Jules Raffoux
hfutsora
Brain777777
Mao Mr
Jelf
Sergey Shumov
lsdsjy
IIFelix
Alex Francev
webfansplz
Shinigami
Shahar Kosti
Alex Kozack
ordago
Jacob Clevenger
Antério Vieira

Changelog ​

v10.1.0 on 4/22/2023
d4db0 - feat: add support directly await (#3004)
v10.0.0-beta.1 on 3/23/2023
b636f - fix: fix toThrowError error type (#2898)
v9.13.0 on 2/18/2023
b4c63 - feat: get a promise function parameter type declaration (#2765)
v9.9.0 on 12/23/2022
ed64f - feat: add onSuccess callbacks (#2562)

Released under the MIT License.