Function resolveClassComponentProps

packages/react-server/src/ReactFizzServer.js:2417–2450

(
  Component: any,
  baseProps: Object,
)

}

export function resolveClassComponentProps(
  Component: any,
  baseProps: Object,
): Object {
  let newProps = baseProps;

  // Remove ref from the props object, if it exists.
  if ('ref' in baseProps) {
    newProps = ({}: any);
    for (const propName in baseProps) {
      if (propName !== 'ref') {
        newProps[propName] = baseProps[propName];
      }
    }
  }

  // Resolve default props.
  const defaultProps = Component.defaultProps;
  if (defaultProps) {
    // We may have already copied the props object above to remove ref. If so,
    // we can modify that. Otherwise, copy the props object with Object.assign.
    if (newProps === baseProps) {
      newProps = assign({}, newProps, baseProps);
    }
    // Taken from old JSX runtime, where this used to live.
    for (const propName in defaultProps) {
      if (newProps[propName] === undefined) {
        newProps[propName] = defaultProps[propName];
      }
    }
  }

  return newProps;
}

function renderClassComponent(
  request: Request,