@rooks/use-fork-ref

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About

A hook that can combine two refs(mutable or callbackRefs) into a single callbackRef

Installation

npm install --save @rooks/use-fork-ref

Importing the hook

import useForkRef from "@rooks/use-fork-ref"

Usage

function Demo() {
  const [isVisible, setIsVisible] = useState(false);
  const callback = entries => {
    if (entries && entries[0]) {
      setIsVisible(entries[0].isIntersecting);
    }
  };
  const [myIntersectionObserverRef] = useIntersectionObserverRef(callback);
  const [
    myBoundingclientrectRef,
    boundingclientrect
  ] = useBoundingclientrectRef();
  const myRef = useForkRef(myIntersectionObserverRef, myBoundingclientrectRef);
  const displayString = JSON.stringify(boundingclientrect, null, 2);
  return (
    <>
      <div
        style={{
          position: "fixed",
          top: 0,
          right: 0
        }}
      >
        <h1>Is rectangle visible - {String(isVisible)}</h1>
      </div>
      <div style={{ height: 2000 }}></div>
      <div ref={myRef} style={{ height: 300, background: "lightblue" }}>
        <p>Boundingclientrect</p>
        <pre>{displayString}</pre>
      </div>
      <div style={{ height: 2000 }}></div>
    </>
  );
}

render(<Demo/>)

Arguments

Argument value	Type	Description
ref2	Callback/Mutable ref	First ref
ref1	Callback/Mutable ref	Second ref

Returns

Return value	Type	Description	Default value
ref	Callback ref	A callback ref function that can internally combines both the refs from the arguments	() => null

Original source

Note: Credit of this hook goes to material-ui

Source