Add inject utils

ui/src/inject.tsx

@@ -0,0 +1,34 @@
+import * as React from 'react';
+import {UserStore} from './stores/UserStore';
+import {SnackManager} from './stores/SnackManager';
+import {MessagesStore} from './stores/MessagesStore';
+import {CurrentUser} from './stores/CurrentUser';
+import {ClientStore} from './stores/ClientStore';
+import {AppStore} from './stores/AppStore';
+import {inject as mobxInject, Provider} from 'mobx-react';
+import {WebSocketStore} from './stores/WebSocketStore';
+
+export interface StoreMapping {
+    userStore: UserStore;
+    snackManager: SnackManager;
+    messagesStore: MessagesStore;
+    currentUser: CurrentUser;
+    clientStore: ClientStore;
+    appStore: AppStore;
+    wsStore: WebSocketStore;
+}
+
+export type AllStores = Extract<keyof StoreMapping, string>;
+export type Stores<T extends AllStores> = Pick<StoreMapping, T>;
+
+export const inject = <I extends AllStores>(...stores: I[]) => {
+    return <P extends {}>(
+        node: React.ComponentType<P>
+    ): React.ComponentType<Pick<P, Exclude<keyof P, I>>> => {
+        return mobxInject(...stores)(node);
+    };
+};
+
+export const InjectProvider: React.SFC<{stores: StoreMapping}> = ({children, stores}) => {
+    return <Provider {...stores}>{children}</Provider>;
+};