text: /**
   * Copyright (c) Facebook, Inc. and its affiliates.
   *
   * This source code is licensed under the MIT license found in the
   * LICENSE file in the root directory of this source tree.
   */
  
  import {REACT_FORWARD_REF_TYPE, REACT_MEMO_TYPE} from 'shared/ReactSymbols';
  
  import warningWithoutStack from 'shared/warningWithoutStack';
  
  export default function forwardRef<Props, ElementType: React$ElementType>(
    render: (props: Props, ref: React$Ref<ElementType>) => React$Node,
  ) {
    if (__DEV__) {
      if (render != null && render.$$typeof === REACT_MEMO_TYPE) {
        warningWithoutStack(
          false,
          'forwardRef requires a render function but received a `memo` ' +
            'component. Instead of forwardRef(memo(...)), use ' +
            'memo(forwardRef(...)).',
        );
      } else if (typeof render !== 'function') {
        warningWithoutStack(
          false,
          'forwardRef requires a render function but was given %s.',
          render === null ? 'null' : typeof render,
        );
      } else {
        warningWithoutStack(
          // Do not warn for 0 arguments because it could be due to usage of the 'arguments' object
          render.length === 0 || render.length === 2,
          'forwardRef render functions accept exactly two parameters: props and ref. %s',
          render.length === 1
            ? 'Did you forget to use the ref parameter?'
            : 'Any additional parameter will be undefined.',
        );
      }
  
      if (render != null) {
        warningWithoutStack(
          render.defaultProps == null && render.propTypes == null,
          'forwardRef render functions do not support propTypes or defaultProps. ' +
            'Did you accidentally pass a React component?',
        );
      }
    }
  
    return {
      // TODO (itpt of Ian): 解释对 REACT_FORWARD_REF_TYPE 的处理
      $$typeof: REACT_FORWARD_REF_TYPE,
      render,
    };
  }
  