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38 lines
829 B
38 lines
829 B
# use-latest-callback
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React hook which returns the latest callback without changing the reference.
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This is useful for scenarios such as event listeners where you may not want to resubscribe when the callback changes.
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## Installation
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Open a Terminal in the project root and run:
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```sh
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npm install use-latest-callback
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```
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## Usage
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The `useLatestCallback` hook accepts a function as its argument, and returns a function which preserves its reference across renders.
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```js
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const useLatestCallback = require('use-latest-callback');
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// ...
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function MyComponent() {
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const callback = useLatestCallback((value) => {
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console.log('Changed', value);
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});
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React.useEffect(() => {
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someEvent.addListener(callback);
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return someEvent.removeListener(callback);
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}, [callback]);
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return <>{/* whatever */}</>;
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}
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```
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