@wordpress/block-editor/build-module/hooks/use-cached-truthy.js

Generic block editor.

/**
 * WordPress dependencies
 */
import { useState, useEffect } from '@wordpress/element';

/**
 * Keeps an up-to-date copy of the passed value and returns it. If value becomes falsy, it will return the last truthy copy.
 *
 * @param {any} value
 * @return {any} value
 */
export function useCachedTruthy(value) {
  const [cachedValue, setCachedValue] = useState(value);
  useEffect(() => {
    if (value) {
      setCachedValue(value);
    }
  }, [value]);
  return cachedValue;
}
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