npm i @react-hook/debounce

A React hook for debouncing setState and other callbacks

Quick Start

``jsx harmony
import {useDebounce, useDebounceCallback} from '@react-hook/debounce'

const Component = (props) => {
// at a basic level, used just like useState
const [value, setValue] = useDebounce('initialValue')
}

const useMyCallback = (initialState, wait, leading) => {
// this is the same code useDebounce() uses to debounce setState
const [state, setState] = useState(initialState)
return [state, useDebounceCallback(setState, wait, leading)]
}
`

API

$3

A hook that acts just like React.useState, but with a setState function
that is only invoked after the wait time in ms has been exceeded between
calls.

`ts
export const useDebounce = (
initialState: State | (() => State),
wait?: number,
leading?: boolean
): [State, Dispatch>]
`

#### Options

| Property | Type | Default | Description |
| ------------ | ------------------------ | ------- | -------------------------------------------------------------------------------------------------------------------------- |
| initialState | State \| (() => State) | | The initial state provided to React.useState |
| wait | number | 100 | The amount of time in ms you want to wait after the latest call before setting a new state. |
| leading | boolean | false | Calls setState on the leading edge (right away). When false, setState will not be called until the next frame is due |

#### Returns [state, setStateDebounced, setStateImmediate]

| Variable | Type | Description |
| ----------------- | ---------- | ------------------------------------------ |
| state | State | The current value in state |
| setStateDebounced | Function | A debounced setState callback |
| setStateImmediate | Function | The regular, immediate setState callback |

Note: Using setStateImmediate does not cancel a queued setStateDebounced calls,
i.e., the setStateDebounced will still take effect once its wait time is over.
If needed, cancelling behavior could typically still be achieved by calling both
setStateImmediate and setStateDebounced with the same value.

---

$3

A hook that will invoke its callback only after wait time in ms has been
exceeded between calls.

`ts
export const useDebounceCallback = (
callback: (...args: CallbackArgs) => void,
wait = 100,
leading = false
): ((...args: CallbackArgs) => void)
`

#### Options

| Property | Type | Default | Description |
| -------- | --------------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| callback | (...args: CallbackArgs) => void | | This is the callback you want to debounce. You need to wrap closures/unstable callbacks in useCallback() so that they are stable, otherwise throttling will break between renders. |
| wait | number | 100 | Defines the amount of time you want setState to wait after the last received action before executing |
| leading | boolean | false | Calls setState on the leading edge (right away). When false, setState will not be called until the next frame is due |

#### Returns debouncedCallback

| Variable | Type | Description |
| ----------------- | --------------------------------- | ------------------------------------ |
| debouncedCallback | (...args: CallbackArgs) => void` | A debounced version of your callback |

LICENSE

MIT