Function forwardRef

dash/deps/react@18.2.0.js:1457–1506

(render)

  }

  function forwardRef(render) {
    {
      if (render != null && render.$$typeof === REACT_MEMO_TYPE) {
        error('forwardRef requires a render function but received a `memo` ' + 'component. Instead of forwardRef(memo(...)), use ' + 'memo(forwardRef(...)).');
      } else if (typeof render !== 'function') {
        error('forwardRef requires a render function but was given %s.', render === null ? 'null' : typeof render);
      } else {
        if (render.length !== 0 && render.length !== 2) {
          error('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) {
        if (render.defaultProps != null || render.propTypes != null) {
          error('forwardRef render functions do not support propTypes or defaultProps. ' + 'Did you accidentally pass a React component?');
        }
      }
    }

    var elementType = {
      $$typeof: REACT_FORWARD_REF_TYPE,
      render: render
    };

    {
      var ownName;
      Object.defineProperty(elementType, 'displayName', {
        enumerable: false,
        configurable: true,
        get: function () {
          return ownName;
        },
        set: function (name) {
          ownName = name; // The inner component shouldn't inherit this display name in most cases,
          // because the component may be used elsewhere.
          // But it's nice for anonymous functions to inherit the name,
          // so that our component-stack generation logic will display their frames.
          // An anonymous function generally suggests a pattern like:
          //   React.forwardRef((props, ref) => {...});
          // This kind of inner function is not used elsewhere so the side effect is okay.

          if (!render.name && !render.displayName) {
            render.displayName = name;
          }
        }
      });
    }

    return elementType;
  }

  var REACT_MODULE_REFERENCE;