Fix typings.

Author: ghengeveld

typings/index.d.ts

@@ -26,13 +26,13 @@ interface AsyncState<T> {
   setError: (error: Error, callback?: () => void) => Error
 }
 
-class Async<T> extends React.Component<AsyncProps<T>, AsyncState<T>> {
-  static Pending: React.FunctionComponent<{ children?: AsyncChildren; persist?: boolean }>
-  static Loading: React.FunctionComponent<{ children?: AsyncChildren; initial?: boolean }>
-  static Resolved: React.FunctionComponent<{ children?: AsyncChildren; persist?: boolean }>
-  static Rejected: React.FunctionComponent<{ children?: AsyncChildren; persist?: boolean }>
+declare class Async<T> extends React.Component<AsyncProps<T>, AsyncState<T>> {
+  static Pending: React.FunctionComponent<{ children?: AsyncChildren<T>; persist?: boolean }>
+  static Loading: React.FunctionComponent<{ children?: AsyncChildren<T>; initial?: boolean }>
+  static Resolved: React.FunctionComponent<{ children?: AsyncChildren<T>; persist?: boolean }>
+  static Rejected: React.FunctionComponent<{ children?: AsyncChildren<T>; persist?: boolean }>
 }
 
-function createInstance<T>(defaultProps?: AsyncProps<T> = {}): Async<T>
+declare function createInstance<T>(defaultProps?: AsyncProps<T>): Async<T>
 
 export default createInstance