1---
2category: Utilities
3related: reactify
4---
5 
6# createUnrefFn
7 
8Make a plain function accepting ref and raw values as arguments.
9Returns the same value the unconverted function returns, with proper typing.
10 
11::: tip
12Make sure you're using the right tool for the job. Using `reactify`
13might be more pertinent in some cases where you want to evaluate the function on each changes of it's arguments.
14:::
15 
16## Usage
17 
18```ts
19import { createUnrefFn } from '@vueuse/core'
20import { shallowRef } from 'vue'
21 
22const url = shallowRef('https://httpbin.org/post')
23const data = shallowRef({ foo: 'bar' })
24 
25function post(url, data) {
26  return fetch(url, { data })
27}
28const unrefPost = createUnrefFn(post)
29 
30post(url, data) /* ❌ Will throw an error because the arguments are refs */
31unrefPost(url, data) /* ✔️ Will Work because the arguments will be auto unref */
32```
33 
34## Type Declarations
35 
36```ts
37export type UnrefFn<T> = T extends (...args: infer A) => infer R
38  ? (
39      ...args: {
40        [K in keyof A]: MaybeRef<A[K]>
41      }
42    ) => R
43  : never
44/**
45 * Make a plain function accepting ref and raw values as arguments.
46 * Returns the same value the unconverted function returns, with proper typing.
47 *
48 * @__NO_SIDE_EFFECTS__
49 */
50export declare function createUnrefFn<T extends Function>(fn: T): UnrefFn<T>
51```
52