ReactLynxUse v0.1.3
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      • usePrevious

      Credit: Re-export from react-use

      React state hook that returns the previous state as described in the React hooks FAQ.

      Usage

      import { usePrevious } from "@lynx-js/react-use";

const Demo = () => {
  const [count, setCount] = React.useState(0);
  const prevCount = usePrevious(count);

  return (
    <view>
      <view bindtap={() => setCount(count + 1)}>+</view>
      <view bindtap={() => setCount(count - 1)}>-</view>
      <text>
        Now: {count}, before: {prevCount}
      </text>
    </view>
  );
};

      Type Declarations

      declare function usePrevious<T>(state: T): T | undefined;