87 lines
2.5 KiB
JavaScript
87 lines
2.5 KiB
JavaScript
"use client";
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import * as React$1 from "react";
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/**
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* React.use if available (React 19+), undefined otherwise.
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* Use dynamic lookup to avoid Webpack compilation errors with React 18.
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*/
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var reactUse = React$1["use"];
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var useLayoutEffect = typeof window !== "undefined" ? React$1.useLayoutEffect : React$1.useEffect;
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/**
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* Taken from https://www.developerway.com/posts/implementing-advanced-use-previous-hook#part3
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*/
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function usePrevious(value) {
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const ref = React$1.useRef({
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value,
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prev: null
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});
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const current = ref.current.value;
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if (value !== current) ref.current = {
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value,
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prev: current
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};
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return ref.current.prev;
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}
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/**
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* React hook to wrap `IntersectionObserver`.
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*
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* This hook will create an `IntersectionObserver` and observe the ref passed to it.
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*
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* When the intersection changes, the callback will be called with the `IntersectionObserverEntry`.
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*
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* @param ref - The ref to observe
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* @param intersectionObserverOptions - The options to pass to the IntersectionObserver
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* @param options - The options to pass to the hook
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* @param callback - The callback to call when the intersection changes
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* @returns The IntersectionObserver instance
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* @example
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* ```tsx
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* const MyComponent = () => {
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* const ref = React.useRef<HTMLDivElement>(null)
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* useIntersectionObserver(
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* ref,
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* (entry) => { doSomething(entry) },
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* { rootMargin: '10px' },
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* { disabled: false }
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* )
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* return <div ref={ref} />
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* ```
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*/
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function useIntersectionObserver(ref, callback, intersectionObserverOptions = {}, options = {}) {
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React$1.useEffect(() => {
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if (!ref.current || options.disabled || typeof IntersectionObserver !== "function") return;
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const observer = new IntersectionObserver(([entry]) => {
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callback(entry);
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}, intersectionObserverOptions);
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observer.observe(ref.current);
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return () => {
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observer.disconnect();
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};
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}, [
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callback,
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intersectionObserverOptions,
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options.disabled,
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ref
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]);
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}
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/**
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* React hook to take a `React.ForwardedRef` and returns a `ref` that can be used on a DOM element.
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*
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* @param ref - The forwarded ref
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* @returns The inner ref returned by `useRef`
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* @example
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* ```tsx
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* const MyComponent = React.forwardRef((props, ref) => {
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* const innerRef = useForwardedRef(ref)
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* return <div ref={innerRef} />
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* })
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* ```
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*/
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function useForwardedRef(ref) {
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const innerRef = React$1.useRef(null);
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React$1.useImperativeHandle(ref, () => innerRef.current, []);
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return innerRef;
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}
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//#endregion
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export { reactUse, useForwardedRef, useIntersectionObserver, useLayoutEffect, usePrevious };
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//# sourceMappingURL=utils.js.map
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