Package detail

@react-hook/previous

jaredLunde32.2kMIT1.0.1

A React hook that stores a value from the previous render

npm i @react-hook/previous

A React hook that stores a value from the previous render.

`jsx harmony import * as React from 'react' import usePrevious from '@react-hook/previous'

const useChanged = (onChange) => { const [status, setStatus] = React.useState('off') const prevStatus = usePrevious(status)

React.useEffect(() => { if (status !== prevStatus) onChange() }, [status])

return [status, setStatus] }


## API

### usePrevious()

```ts
const usePrevious: <T extends any>(
  value: T,
  initialValue?: T | undefined
) => T | undefined

Argument	Type	Default	Required?	Description
value	`T`	\| Yes	The current value
initialValue	`T	undefined`	`undefined`	No

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