Add flow annotations for redux actions

4 files changed, 28 insertions, 16 deletions

diff --git a/app/actions/connect.js b/app/actions/connect.js
index a63496661a..11e88e99b0 100644
--- a/app/actions/connect.js
+++ b/app/actions/connect.js
@@ -1,20 +1,19 @@
 import { clipboard } from 'electron';
 import { createAction } from 'redux-actions';
 
-/** Action for changing connection state */
-const connectionChange = createAction('CONNECTION_CHANGE');
+import type { Backend } from '../lib/backend';
+import type { ConnectReduxState } from '../reducers/connect';
+import type { ReduxAction, ReduxGetStateFn, ReduxDispatchFn } from '../store';
 
-/** Action for connecting to server */
-const connect = (backend, addr) => () => backend.connect(addr);
+export type ConnectionChangeAction = <T: $Shape<ConnectReduxState>>(state: T) => ReduxAction<T>;
 
-/** Action for disconnecting from server */
-const disconnect = (backend) => () => backend.disconnect();
-
-/** Action for copying IP address in memory */
+const connectionChange: ConnectionChangeAction = createAction('CONNECTION_CHANGE');
+const connect = (backend: Backend, addr: string) => () => backend.connect(addr);
+const disconnect = (backend: Backend) => () => backend.disconnect();
 const copyIPAddress = () => {
-  return (_, getState) => {
-    const ip = getState().connect.clientIp;
-    if(typeof(ip) === 'string') {
+  return (_dispatch: ReduxDispatchFn, getState: ReduxGetStateFn) => {
+    const ip: ?string = getState().connect.clientIp;
+    if(ip) {
       clipboard.writeText(ip);
     }
   };
diff --git a/app/actions/settings.js b/app/actions/settings.js
index 7a482a578f..4788a88f85 100644
--- a/app/actions/settings.js
+++ b/app/actions/settings.js
@@ -1,5 +1,11 @@
+// @flow
 import { createAction } from 'redux-actions';
 
-const updateSettings = createAction('SETTINGS_UPDATE');
+import type { SettingsReduxState } from '../reducers/settings';
+import type { ReduxAction } from '../store';
+
+export type UpdateSettingsAction = <T: $Shape<SettingsReduxState>>(state: T) => ReduxAction<T>;
+
+const updateSettings: UpdateSettingsAction = createAction('SETTINGS_UPDATE');
 
 export default { updateSettings };
diff --git a/app/actions/user.js b/app/actions/user.js
index c1519ba19b..1b4d46ad2d 100644
--- a/app/actions/user.js
+++ b/app/actions/user.js
@@ -1,7 +1,14 @@
+// @flow
 import { createAction } from 'redux-actions';
 
-const loginChange = createAction('USER_LOGIN_CHANGE');
-const login = (backend, account) => () => backend.login(account);
-const logout = (backend) => () => backend.logout();
+import type { Backend } from '../lib/backend';
+import type { UserReduxState } from '../reducers/user';
+import type { ReduxAction } from '../store';
+
+export type LoginChangeAction = <T: $Shape<UserReduxState>>(state: T) => ReduxAction<T>;
+
+const loginChange: LoginChangeAction = createAction('USER_LOGIN_CHANGE');
+const login = (backend: Backend, account: string) => () => backend.login(account);
+const logout = (backend: Backend) => () => backend.logout();
 
 export default { login, logout, loginChange };
diff --git a/app/store.js b/app/store.js
index 667f03b5a3..83f7ff5430 100644
--- a/app/store.js
+++ b/app/store.js
@@ -29,7 +29,7 @@ export type ReduxDispatchFn<T: *> = Dispatch<ReduxAction<T>>;
 export default function configureStore(initialState: ?ReduxState, routerHistory: History): ReduxStore {
   const router = routerMiddleware(routerHistory);
 
-  const actionCreators: { string: Function } = {
+  const actionCreators: { [string]: Function } = {
     ...userActions,
     ...connectActions,
     ...settingsActions,