Fix linting problems

packages/instant/src/redux/reducer.ts

@@ -10,7 +10,7 @@ export const INITIAL_STATE: State = {
     ethUsdPrice: undefined,
 };
 
-export function reducer(state: State = INITIAL_STATE, action: Action): State {
+export const reducer = (state: State = INITIAL_STATE, action: Action): State => {
     switch (action.type) {
         case ActionTypes.UPDATE_ETH_USD_PRICE:
             return {
@@ -20,4 +20,4 @@ export function reducer(state: State = INITIAL_STATE, action: Action): State {
         default:
             return state;
     }
-}
+};

packages/instant/src/redux/store.ts

@@ -1,5 +1,5 @@
 import * as _ from 'lodash';
-import { applyMiddleware, createStore, Store as ReduxStore } from 'redux';
+import { createStore, Store as ReduxStore } from 'redux';
 
 import { reducer, State } from './reducer';
 

packages/instant/src/style/theme.ts

@@ -6,7 +6,7 @@ const {
     injectGlobal,
     keyframes,
     ThemeProvider,
-} = styledComponents as styledComponents.ThemedStyledComponentsModule<Theme>;
+} = styledComponents;
 
 export type Theme = { [key in ColorOption]: string };