@dnb/eufemia/es/extensions/forms/Value/SummaryList/useVerifyChildren.js

DNB Eufemia Design System UI Library

"use client";

import { Children, Fragment, isValidElement, useCallback, useEffect, useRef } from 'react';
import { warn } from "../../../../shared/helpers.js";
export function useVerifyChildren({
  children,
  message,
  messageInfo,
  ignoreTypes
}) {
  const verifyCount = useRef(0);
  verifyCount.current = 0;
  const verifyChild = useCallback(() => {
    verifyCount.current += 1;
  }, []);
  useEffect(() => {
    if (process.env.NODE_ENV !== 'production') {
      const count = countChildren(children, ignoreTypes);
      if (count > 0 && count > verifyCount.current) {
        warn(message, messageInfo);
      }
    }
  }, [children, message]);
  return {
    verifyChild
  };
}
export const countChildren = (children, ignoreTypes, count = 0) => {
  return Children.toArray(children).reduce((count, child) => {
    if (child?.['type'] === Fragment) {
      return countChildren(child['props']?.children, ignoreTypes, count);
    }
    return count + (isValidElement(child) && !ignoreTypes?.includes(child?.type?.['name']) ? 1 : 0);
  }, count);
};
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