import React from 'react';

const FUNCTION_REGEX = /react(\d+)?./i;

const classComponent = (item: any) => typeof item === 'function'
  && item.prototype
  && item.prototype.isReactComponent;

const functionComponent = (item: any) => (
  typeof item === 'function'
    && String(item).includes('return')
    && String(item).match(FUNCTION_REGEX)
    && String(item).includes('.createElement')
);

const component = (item: any) => classComponent(item) || functionComponent(item);

const element = (item: any) => React.isValidElement(item);

const compatible = (item: any) => element(item) || component(item);

export default compatible;