Use required context parameter for InitialStateType

#132

Author: derekjuber

README.md

@@ -151,7 +151,7 @@ A function that gets initial state asynchronously without triggering actions. Op
 ###### Types
 
 ```flow
-type InitialState = () => Promise<State> | State
+type InitialState = (ctx: Context) => Promise<State> | State
 ```
 
 ---

src/tokens.js

@@ -13,7 +13,7 @@ import type {Token, Context} from 'fusion-core';
 
 import type {ReactReduxServiceType} from './types.js';
 
-type InitialStateType<TState> = (ctx?: Context) => Promise<TState> | TState;
+type InitialStateType<TState> = (ctx: Context) => Promise<TState> | TState;
 
 export const ReduxToken: Token<ReactReduxServiceType> = createToken(
   'ReduxToken'