Function isForwardRef

packages/core/src/di/forward_ref.ts:98–104

(fn: any)

/** Checks whether a function is wrapped by a `forwardRef`. */
export function isForwardRef(fn: any): fn is () => any {
  return (
    typeof fn === 'function' &&
    fn.hasOwnProperty(__forward_ref__) &&
    fn.__forward_ref__ === forwardRef
  );
}