ionic-framework/packages/react/src/components/utils/index.tsx

import { Config as CoreConfig, Platforms, getPlatforms as getPlatformsCore, isPlatform as isPlatformCore } from '@ionic/core';
import React from 'react';

import { IonicReactProps } from '../IonicReactProps';

export type IonicReactExternalProps<PropType, ElementType> = PropType & Omit<React.HTMLAttributes<ElementType>, 'style'> & IonicReactProps;

export const createForwardRef = <PropType, ElementType>(ReactComponent: any, displayName: string) => {
  const forwardRef = (props: IonicReactExternalProps<PropType, ElementType>, ref: React.Ref<ElementType>) => {
    return <ReactComponent {...props} forwardedRef={ref} />;
  };
  forwardRef.displayName = displayName;

  return React.forwardRef(forwardRef);
};

export * from './attachProps';
export * from './case';
export * from './ionRenderToString';

export const isPlatform = (platform: Platforms) => {
  return isPlatformCore(window, platform);
};

export const getPlatforms = () => {
  return getPlatformsCore(window);
};

export const getConfig = (): CoreConfig | null => {
  if (typeof (window as any) !== 'undefined') {
    const Ionic = (window as any).Ionic;
    if (Ionic && Ionic.config) {
      return Ionic.config;
    }
  }
  return null;
};