From e82639f7dfe8d1739fd124bd7f8db97106782011 Mon Sep 17 00:00:00 2001
From: Titouan Rigoudy <titouan.rigoudy@gmail.com>
Date: Tue, 27 Jul 2021 18:38:20 -0400
Subject: [PATCH] Install and run prettier formatter.

---
 .prettierignore                           |   4 +
 .prettierrc.json                          |   1 +
 TODO.md                                   |   5 +-
 src/App.test.tsx                          |  12 +-
 src/App.tsx                               |   8 +-
 src/actions/LoginActions.js               |   6 +-
 src/actions/RoomActions.js                |  78 +++----
 src/actions/SocketActions.js              |  48 ++--
 src/actions/SocketHandlerActions.js       |  51 +++--
 src/actions/UserActions.js                |   6 +-
 src/app/hooks.ts                          |   4 +-
 src/app/store.ts                          |  10 +-
 src/components/ConnectForm.js             |  14 +-
 src/components/Header.js                  |  22 +-
 src/components/LoginStatusPane.js         |  76 +++----
 src/components/Room.js                    |  35 +--
 src/components/RoomChat.js                | 129 +++++------
 src/components/RoomChatForm.js            |  62 +++---
 src/components/RoomChatHeader.js          |  91 ++++----
 src/components/RoomChatMessageList.js     |  55 +++--
 src/components/RoomList.js                |  18 +-
 src/components/RoomListHeader.js          |  22 +-
 src/components/RoomUserList.js            |  28 ++-
 src/components/SearchableList.js          |  98 ++++-----
 src/components/SocketStatusPane.tsx       |   4 +-
 src/components/SolsticeApp.js             |   8 +-
 src/components/User.js                    |  17 +-
 src/components/UserList.js                |  14 +-
 src/constants/ActionTypes.js              |  22 +-
 src/containers/ConnectPage.js             |  20 +-
 src/containers/Footer.js                  |   2 +-
 src/containers/RoomsPane.js               |  82 ++++---
 src/containers/UsersPane.js               |  21 +-
 src/features/counter/Counter.module.css   |   4 +-
 src/features/counter/Counter.tsx          |  10 +-
 src/features/counter/counterSlice.spec.ts |  18 +-
 src/features/counter/counterSlice.ts      |  35 ++-
 src/index.tsx                             |  10 +-
 src/modules/login/message.ts              |  12 +-
 src/modules/login/slice.ts                |  28 +--
 src/modules/websocket/actions.ts          |  10 +-
 src/modules/websocket/message.ts          |  14 +-
 src/modules/websocket/middleware.ts       |  60 ++---
 src/modules/websocket/slice.ts            |  14 +-
 src/reducers/index.js                     |  10 +-
 src/reducers/login.js                     | 102 ++++-----
 src/reducers/rooms.js                     | 187 ++++++++--------
 src/reducers/socket.js                    | 155 ++++++-------
 src/reducers/users.js                     |  66 +++---
 src/setupTests.ts                         |   2 +-
 src/styles/styles.scss                    | 256 +++++++++++-----------
 src/utils/ControlRequest.js               |  56 ++---
 src/utils/OrderedMap.js                   | 116 +++++-----
 src/utils/propTypeRequiredWrapper.js      |  15 +-
 src/utils/propTypeSymbol.js               |  25 +--
 55 files changed, 1114 insertions(+), 1164 deletions(-)
 create mode 100644 .prettierignore
 create mode 100644 .prettierrc.json

diff --git a/.prettierignore b/.prettierignore
new file mode 100644
index 0000000..e6ce93e
--- /dev/null
+++ b/.prettierignore
@@ -0,0 +1,4 @@
+build
+node_modules
+package.json
+package-lock.json
diff --git a/.prettierrc.json b/.prettierrc.json
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/.prettierrc.json
@@ -0,0 +1 @@
+{}
diff --git a/TODO.md b/TODO.md
index 65ff79e..5dcba9a 100644
--- a/TODO.md
+++ b/TODO.md
@@ -1,4 +1,3 @@
-Things to do:
--------------
+## Things to do:
 
- - actually join rooms, display and send messages
+- actually join rooms, display and send messages
diff --git a/src/App.test.tsx b/src/App.test.tsx
index 659cc13..e4874f8 100644
--- a/src/App.test.tsx
+++ b/src/App.test.tsx
@@ -1,10 +1,10 @@
-import React from 'react';
-import { render } from '@testing-library/react';
-import { Provider } from 'react-redux';
-import { store } from './app/store';
-import App from './App';
+import React from "react";
+import { render } from "@testing-library/react";
+import { Provider } from "react-redux";
+import { store } from "./app/store";
+import App from "./App";
 
-test('renders learn react link', () => {
+test("renders learn react link", () => {
   const { getByText } = render(
     <Provider store={store}>
       <App />
diff --git a/src/App.tsx b/src/App.tsx
index e8da502..e28b81e 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,7 +1,7 @@
-import React from 'react';
-import logo from './logo.svg';
-import { Counter } from './features/counter/Counter';
-import './App.css';
+import React from "react";
+import logo from "./logo.svg";
+import { Counter } from "./features/counter/Counter";
+import "./App.css";
 
 function App() {
   return (
diff --git a/src/actions/LoginActions.js b/src/actions/LoginActions.js
index 166114d..ec14a5d 100644
--- a/src/actions/LoginActions.js
+++ b/src/actions/LoginActions.js
@@ -1,7 +1,7 @@
 import { LOGIN_GET_STATUS } from "../constants/ActionTypes";
 
 export default {
-    getStatus: () => ({
-        type: LOGIN_GET_STATUS
-    })
+  getStatus: () => ({
+    type: LOGIN_GET_STATUS,
+  }),
 };
diff --git a/src/actions/RoomActions.js b/src/actions/RoomActions.js
index 87e192e..01f5874 100644
--- a/src/actions/RoomActions.js
+++ b/src/actions/RoomActions.js
@@ -1,48 +1,48 @@
 import {
-    ROOM_GET_LIST,
-    ROOM_JOIN,
-    ROOM_LEAVE,
-    ROOM_MESSAGE,
-    ROOM_SELECT,
-    ROOM_SHOW_USERS,
-    ROOM_HIDE_USERS
+  ROOM_GET_LIST,
+  ROOM_JOIN,
+  ROOM_LEAVE,
+  ROOM_MESSAGE,
+  ROOM_SELECT,
+  ROOM_SHOW_USERS,
+  ROOM_HIDE_USERS,
 } from "../constants/ActionTypes";
 
-export default ({
-    getList: () => ({
-        type: ROOM_GET_LIST
-    }),
+export default {
+  getList: () => ({
+    type: ROOM_GET_LIST,
+  }),
 
-    join: (room_name) => ({
-        type: ROOM_JOIN,
-        payload: room_name
-    }),
+  join: (room_name) => ({
+    type: ROOM_JOIN,
+    payload: room_name,
+  }),
 
-    leave: (room_name) => ({
-        type: ROOM_LEAVE,
-        payload: room_name
-    }),
+  leave: (room_name) => ({
+    type: ROOM_LEAVE,
+    payload: room_name,
+  }),
 
-    select: (room_name) => ({
-        type: ROOM_SELECT,
-        payload: room_name
-    }),
+  select: (room_name) => ({
+    type: ROOM_SELECT,
+    payload: room_name,
+  }),
 
-    sendMessage: (room_name, message) => ({
-        type: ROOM_MESSAGE,
-        payload: {
-            room_name,
-            message
-        }
-    }),
+  sendMessage: (room_name, message) => ({
+    type: ROOM_MESSAGE,
+    payload: {
+      room_name,
+      message,
+    },
+  }),
 
-    showUsers: (room_name) => ({
-        type: ROOM_SHOW_USERS,
-        payload: room_name
-    }),
+  showUsers: (room_name) => ({
+    type: ROOM_SHOW_USERS,
+    payload: room_name,
+  }),
 
-    hideUsers: (room_name) => ({
-        type: ROOM_HIDE_USERS,
-        payload: room_name
-    })
-});
+  hideUsers: (room_name) => ({
+    type: ROOM_HIDE_USERS,
+    payload: room_name,
+  }),
+};
diff --git a/src/actions/SocketActions.js b/src/actions/SocketActions.js
index cbf7e5e..476ac0a 100644
--- a/src/actions/SocketActions.js
+++ b/src/actions/SocketActions.js
@@ -1,29 +1,29 @@
 import {
-    SOCKET_RECEIVE_MESSAGE,
-    SOCKET_SEND_MESSAGE,
-    SOCKET_SET_CLOSED,
-    SOCKET_SET_CLOSING,
-    SOCKET_SET_ERROR,
-    SOCKET_SET_OPEN,
-    SOCKET_SET_OPENING
+  SOCKET_RECEIVE_MESSAGE,
+  SOCKET_SEND_MESSAGE,
+  SOCKET_SET_CLOSED,
+  SOCKET_SET_CLOSING,
+  SOCKET_SET_ERROR,
+  SOCKET_SET_OPEN,
+  SOCKET_SET_OPENING,
 } from "../constants/ActionTypes";
 
-export default ({
-    open: (url, handlers) => ({
-        type: SOCKET_SET_OPENING,
-        payload: {
-            url,
-            onclose: handlers.onclose,
-            onerror: handlers.onerror,
-            onopen: handlers.onopen,
-            onmessage: handlers.onmessage
-        }
-    }),
+export default {
+  open: (url, handlers) => ({
+    type: SOCKET_SET_OPENING,
+    payload: {
+      url,
+      onclose: handlers.onclose,
+      onerror: handlers.onerror,
+      onopen: handlers.onopen,
+      onmessage: handlers.onmessage,
+    },
+  }),
 
-    close: () => ({ type: SOCKET_SET_CLOSING }),
+  close: () => ({ type: SOCKET_SET_CLOSING }),
 
-    send: (message) => ({
-        type: SOCKET_SEND_MESSAGE,
-        payload: message
-    })
-});
+  send: (message) => ({
+    type: SOCKET_SEND_MESSAGE,
+    payload: message,
+  }),
+};
diff --git a/src/actions/SocketHandlerActions.js b/src/actions/SocketHandlerActions.js
index ac79b7a..43feacd 100644
--- a/src/actions/SocketHandlerActions.js
+++ b/src/actions/SocketHandlerActions.js
@@ -1,33 +1,36 @@
 import {
-    SOCKET_SET_CLOSED,
-    SOCKET_SET_ERROR,
-    SOCKET_SET_OPEN,
-    SOCKET_RECEIVE_MESSAGE
+  SOCKET_SET_CLOSED,
+  SOCKET_SET_ERROR,
+  SOCKET_SET_OPEN,
+  SOCKET_RECEIVE_MESSAGE,
 } from "../constants/ActionTypes";
 
 export default {
-    onclose: event => ({
-        type: SOCKET_SET_CLOSED,
-        payload: event.code
-    }),
+  onclose: (event) => ({
+    type: SOCKET_SET_CLOSED,
+    payload: event.code,
+  }),
 
-    onerror: event => ({ type: SOCKET_SET_ERROR }),
+  onerror: (event) => ({ type: SOCKET_SET_ERROR }),
 
-    onopen: event => ({ type: SOCKET_SET_OPEN }),
+  onopen: (event) => ({ type: SOCKET_SET_OPEN }),
 
-    onmessage: event => {
-        console.log(`Received message: ${event.data}`);
-        const action = { type: SOCKET_RECEIVE_MESSAGE };
-        try {
-            const { variant, fields: [data] } = JSON.parse(event.data);
-            if (typeof variant === "undefined") {
-                throw new Error('Missing "variant" field in control response');
-            }
-            action.payload = { variant, data };
-        } catch (err) {
-            action.error = true;
-            action.payload = err;
-        }
-        return action;
+  onmessage: (event) => {
+    console.log(`Received message: ${event.data}`);
+    const action = { type: SOCKET_RECEIVE_MESSAGE };
+    try {
+      const {
+        variant,
+        fields: [data],
+      } = JSON.parse(event.data);
+      if (typeof variant === "undefined") {
+        throw new Error('Missing "variant" field in control response');
+      }
+      action.payload = { variant, data };
+    } catch (err) {
+      action.error = true;
+      action.payload = err;
     }
+    return action;
+  },
 };
diff --git a/src/actions/UserActions.js b/src/actions/UserActions.js
index 86765a9..5cc25e5 100644
--- a/src/actions/UserActions.js
+++ b/src/actions/UserActions.js
@@ -1,9 +1,9 @@
 import { USER_GET_LIST } from "../constants/ActionTypes";
 
 const UserActions = {
-    getList: () => ({
-        type: USER_GET_LIST
-    })
+  getList: () => ({
+    type: USER_GET_LIST,
+  }),
 };
 
 export default UserActions;
diff --git a/src/app/hooks.ts b/src/app/hooks.ts
index 520e84e..36b5ea2 100644
--- a/src/app/hooks.ts
+++ b/src/app/hooks.ts
@@ -1,5 +1,5 @@
-import { TypedUseSelectorHook, useDispatch, useSelector } from 'react-redux';
-import type { RootState, AppDispatch } from './store';
+import { TypedUseSelectorHook, useDispatch, useSelector } from "react-redux";
+import type { RootState, AppDispatch } from "./store";
 
 // Use throughout your app instead of plain `useDispatch` and `useSelector`
 export const useAppDispatch = () => useDispatch<AppDispatch>();
diff --git a/src/app/store.ts b/src/app/store.ts
index 89d3112..f9fbd62 100644
--- a/src/app/store.ts
+++ b/src/app/store.ts
@@ -1,4 +1,4 @@
-import { configureStore, ThunkAction, Action } from '@reduxjs/toolkit';
+import { configureStore, ThunkAction, Action } from "@reduxjs/toolkit";
 
 import counterReducer from "../features/counter/counterSlice";
 // TODO: Rework these to use a slice, otherwise redux complains about
@@ -20,10 +20,10 @@ export const store = configureStore({
     socket: socketReducer,
     //users,
   },
-  middleware: (getDefaultMiddleware) => (
-    getDefaultMiddleware().concat(makeSocketMiddleware(
-      loginSocketMessageHandlers))
-  )
+  middleware: (getDefaultMiddleware) =>
+    getDefaultMiddleware().concat(
+      makeSocketMiddleware(loginSocketMessageHandlers)
+    ),
 });
 
 export type AppDispatch = typeof store.dispatch;
diff --git a/src/components/ConnectForm.js b/src/components/ConnectForm.js
index 88d1d60..5216bb0 100644
--- a/src/components/ConnectForm.js
+++ b/src/components/ConnectForm.js
@@ -5,12 +5,12 @@ import SocketStatusPane from "./SocketStatusPane";
 import {
   SocketSliceState,
   SocketState,
-  socketOpen
+  socketOpen,
 } from "../modules/websocket/slice";
 
 interface Props {
-  socket: SocketSliceState,
-};
+  socket: SocketSliceState;
+}
 
 const ConnectForm: React.FC<Props> = ({ socket }) => {
   const dispatch = useDispatch();
@@ -24,7 +24,7 @@ const ConnectForm: React.FC<Props> = ({ socket }) => {
   return (
     <div id="connect-form">
       <h2>Connect to a solstice client</h2>
-      <Form 
+      <Form
         onSubmit={onSubmit}
         render={({ handleSubmit, submitting }) => (
           <form onSubmit={handleSubmit}>
@@ -36,10 +36,8 @@ const ConnectForm: React.FC<Props> = ({ socket }) => {
               required
               pattern="wss?://.+"
             />
-            <button
-              type="submit"
-              disabled={submitting || !isSocketClosed}>
-                Connect
+            <button type="submit" disabled={submitting || !isSocketClosed}>
+              Connect
             </button>
           </form>
         )}
diff --git a/src/components/Header.js b/src/components/Header.js
index d8fcd74..58883c0 100644
--- a/src/components/Header.js
+++ b/src/components/Header.js
@@ -2,17 +2,17 @@ import React from "react";
 import { Link } from "react-router-dom";
 
 const Header = () => {
-    return (
-        <header>
-            <h1>Solstice web UI</h1>
-            <Link to="/app/rooms" activeClassName="active">
-                Rooms
-            </Link>
-            <Link to="/app/users" activeClassName="active">
-                Users
-            </Link>
-        </header>
-    );
+  return (
+    <header>
+      <h1>Solstice web UI</h1>
+      <Link to="/app/rooms" activeClassName="active">
+        Rooms
+      </Link>
+      <Link to="/app/users" activeClassName="active">
+        Users
+      </Link>
+    </header>
+  );
 };
 
 export default Header;
diff --git a/src/components/LoginStatusPane.js b/src/components/LoginStatusPane.js
index 179ab09..33ae5b9 100644
--- a/src/components/LoginStatusPane.js
+++ b/src/components/LoginStatusPane.js
@@ -1,8 +1,8 @@
 import { LoginStatus, LoginSliceState } from "../modules/login/slice";
 
 interface Props {
-  login: LoginSliceState,
-};
+  login: LoginSliceState;
+}
 
 const LoginStatusPane: React.FC<Props> = ({ login }) => {
   let statusText;
@@ -10,50 +10,40 @@ const LoginStatusPane: React.FC<Props> = ({ login }) => {
   let reason;
 
   switch (login.status) {
-      case LoginStatus.Unknown:
-          statusText = "unknown";
-          break;
-
-      case LoginStatus.Fetching:
-          statusText = "fetching";
-          break;
-
-      case LoginStatus.Pending:
-          statusText = `logging in as ${login.username}`;
-          break;
-
-      case LoginStatus.Success:
-          statusText = `logged in as ${login.username}`;
-          motd = (
-              <span id="login-status-motd">
-                  MOTD: {login.motd}
-              </span>
-          );
-          break;
-
-      case LoginStatus.Failure:
-          statusText = `failed to log in as ${login.username}`;
-          reason = (
-              <span id="login-status-reason">
-                  Reason: {login.reason}
-              </span>
-          );
-          break;
-
-      default:
-          statusText = `invalid status ${login.status}`;
-          break;
+    case LoginStatus.Unknown:
+      statusText = "unknown";
+      break;
+
+    case LoginStatus.Fetching:
+      statusText = "fetching";
+      break;
+
+    case LoginStatus.Pending:
+      statusText = `logging in as ${login.username}`;
+      break;
+
+    case LoginStatus.Success:
+      statusText = `logged in as ${login.username}`;
+      motd = <span id="login-status-motd">MOTD: {login.motd}</span>;
+      break;
+
+    case LoginStatus.Failure:
+      statusText = `failed to log in as ${login.username}`;
+      reason = <span id="login-status-reason">Reason: {login.reason}</span>;
+      break;
+
+    default:
+      statusText = `invalid status ${login.status}`;
+      break;
   }
 
   return (
-      <div id="login-status-pane">
-          <span id="login-status-text">
-              Login status: {statusText}
-          </span>
-          {motd}
-          {reason}
-      </div>
+    <div id="login-status-pane">
+      <span id="login-status-text">Login status: {statusText}</span>
+      {motd}
+      {reason}
+    </div>
   );
-}
+};
 
 export default LoginStatusPane;
diff --git a/src/components/Room.js b/src/components/Room.js
index 4612980..680193e 100644
--- a/src/components/Room.js
+++ b/src/components/Room.js
@@ -5,29 +5,30 @@ import ImmutablePropTypes from "react-immutable-proptypes";
 import md5 from "md5";
 
 const Room = ({ name, data }) => {
-    const { membership, userCount } = data;
+  const { membership, userCount } = data;
 
-    const classes = ["room"];
-    if (membership == "Member") {
-        classes.push("room-joined");
-    }
+  const classes = ["room"];
+  if (membership == "Member") {
+    classes.push("room-joined");
+  }
 
-    const path = `/app/rooms/${md5(name)}`;
+  const path = `/app/rooms/${md5(name)}`;
 
-    return (
-        <Link to={path}
-            activeClassName="room-selected"
-            className={classes.join(" ")}
-        >
-            <span className="room-name">{name}</span>
-            <span className="room-user-count">({userCount})</span>
-        </Link>
-    );
+  return (
+    <Link
+      to={path}
+      activeClassName="room-selected"
+      className={classes.join(" ")}
+    >
+      <span className="room-name">{name}</span>
+      <span className="room-user-count">({userCount})</span>
+    </Link>
+  );
 };
 
 Room.propTypes = {
-    name: PropTypes.string.isRequired,
-    data: ImmutablePropTypes.map.isRequired
+  name: PropTypes.string.isRequired,
+  data: ImmutablePropTypes.map.isRequired,
 };
 
 export default Room;
diff --git a/src/components/RoomChat.js b/src/components/RoomChat.js
index e062dcf..74da11a 100644
--- a/src/components/RoomChat.js
+++ b/src/components/RoomChat.js
@@ -12,88 +12,79 @@ import RoomChatMessageList from "../components/RoomChatMessageList";
 const ID = "room-chat";
 
 class RoomChat extends React.Component {
-    constructor(props) {
-        super(props);
-    }
+  constructor(props) {
+    super(props);
+  }
 
-    componentDidMount() {
-        this.join_if_non_member(this.props);
-    }
+  componentDidMount() {
+    this.join_if_non_member(this.props);
+  }
 
-    componentWillReceiveProps(props) {
-        this.join_if_non_member(props);
-    }
+  componentWillReceiveProps(props) {
+    this.join_if_non_member(props);
+  }
 
-    join_if_non_member(props) {
-        const { room, roomActions } = props;
-        if (room && room.membership == "NonMember") {
-            roomActions.join(room.name);
-        }
+  join_if_non_member(props) {
+    const { room, roomActions } = props;
+    if (room && room.membership == "NonMember") {
+      roomActions.join(room.name);
     }
+  }
 
-    render() {
-        const { loginUserName, room, roomActions } = this.props;
+  render() {
+    const { loginUserName, room, roomActions } = this.props;
 
-        if (!room) {
-            return (
-                <div id={ID}>
-                    <RoomChatHeader
-                        roomActions={roomActions}
-                    />
-                </div>
-            );
-        }
-
-        const { name, membership, messages, showUsers } = room;
+    if (!room) {
+      return (
+        <div id={ID}>
+          <RoomChatHeader roomActions={roomActions} />
+        </div>
+      );
+    }
 
-        const header = (
-            <RoomChatHeader
-                room={{
-                    membership,
-                    name,
-                    showUsers
-                }}
-                roomActions={roomActions}
-            />
-        );
+    const { name, membership, messages, showUsers } = room;
 
-        if (membership != "Member") {
-            return (
-                <div id={ID}>
-                    {header}
-                </div>
-            );
-        }
+    const header = (
+      <RoomChatHeader
+        room={{
+          membership,
+          name,
+          showUsers,
+        }}
+        roomActions={roomActions}
+      />
+    );
 
-        // room.membership == "Member"
-        return (
-            <div id={ID}>
-                {header}
-                <RoomChatMessageList
-                    loginUserName={loginUserName}
-                    messages={messages}
-                />
-                <RoomChatForm
-                    roomName={name}
-                    sendMessage={roomActions.sendMessage}
-                />
-            </div>
-        );
+    if (membership != "Member") {
+      return <div id={ID}>{header}</div>;
     }
+
+    // room.membership == "Member"
+    return (
+      <div id={ID}>
+        {header}
+        <RoomChatMessageList
+          loginUserName={loginUserName}
+          messages={messages}
+        />
+        <RoomChatForm roomName={name} sendMessage={roomActions.sendMessage} />
+      </div>
+    );
+  }
 }
 
 RoomChat.propTypes = {
-    loginUserName: PropTypes.string,
-    room: PropTypes.shape({
-        name:       PropTypes.string.isRequired,
-        membership: PropTypes.string.isRequired,
-        messages:   ImmutablePropTypes.list.isRequired,
-        showUsers:  PropTypes.bool
-    }),
-    roomActions: PropTypes.shape({
-        join: PropTypes.func.isRequired,
-        sendMessage:  PropTypes.func.isRequired
-    }).isRequired
+  loginUserName: PropTypes.string,
+  room: PropTypes.shape({
+    name: PropTypes.string.isRequired,
+    membership: PropTypes.string.isRequired,
+    messages: ImmutablePropTypes.list.isRequired,
+    showUsers: PropTypes.bool,
+  }),
+  roomActions: PropTypes.shape({
+    join: PropTypes.func.isRequired,
+    sendMessage: PropTypes.func.isRequired,
+  }).isRequired,
 };
 
 export default RoomChat;
diff --git a/src/components/RoomChatForm.js b/src/components/RoomChatForm.js
index 9b67b80..9e427eb 100644
--- a/src/components/RoomChatForm.js
+++ b/src/components/RoomChatForm.js
@@ -1,43 +1,41 @@
-import React, {PropTypes} from "react";
-import {reduxForm} from "redux-form";
+import React, { PropTypes } from "react";
+import { reduxForm } from "redux-form";
 
 const RoomChatForm = (props) => {
-    const {
-        fields: { message },
-        handleSubmit,
-        resetForm,
-        roomName,
-        sendMessage
-    } = props;
+  const {
+    fields: { message },
+    handleSubmit,
+    resetForm,
+    roomName,
+    sendMessage,
+  } = props;
 
-    const onSubmit = handleSubmit((values) => {
-        sendMessage(roomName, values.message);
-        resetForm();
-    });
+  const onSubmit = handleSubmit((values) => {
+    sendMessage(roomName, values.message);
+    resetForm();
+  });
 
-    return (
-        <div id="room-chat-form">
-            <form onSubmit={onSubmit}>
-                <input type="text" placeholder="Type a message..."
-                    {...message} />
-                <button type="submit">Send</button>
-            </form>
-        </div>
-    );
+  return (
+    <div id="room-chat-form">
+      <form onSubmit={onSubmit}>
+        <input type="text" placeholder="Type a message..." {...message} />
+        <button type="submit">Send</button>
+      </form>
+    </div>
+  );
 };
 
 RoomChatForm.propTypes = {
-    fields: PropTypes.shape({
-        message: PropTypes.object.isRequired
-    }).isRequired,
-    handleSubmit: PropTypes.func.isRequired,
-    resetForm: PropTypes.func.isRequired,
-    roomName: PropTypes.string,
-    sendMessage: PropTypes.func.isRequired
+  fields: PropTypes.shape({
+    message: PropTypes.object.isRequired,
+  }).isRequired,
+  handleSubmit: PropTypes.func.isRequired,
+  resetForm: PropTypes.func.isRequired,
+  roomName: PropTypes.string,
+  sendMessage: PropTypes.func.isRequired,
 };
 
 export default reduxForm({
-    form: "chat",
-    fields: ["message"]
+  form: "chat",
+  fields: ["message"],
 })(RoomChatForm);
-
diff --git a/src/components/RoomChatHeader.js b/src/components/RoomChatHeader.js
index 7cdfa46..149cf5d 100644
--- a/src/components/RoomChatHeader.js
+++ b/src/components/RoomChatHeader.js
@@ -3,64 +3,59 @@ import { withRouter } from "react-router";
 import ImmutablePropTypes from "react-immutable-proptypes";
 
 const make_header = (title, showUsersButton, leaveButton) => (
-    <div id="room-chat-header">
-        <div id="room-chat-header-title">{title}</div>
-        {showUsersButton}
-        {leaveButton}
-    </div>
+  <div id="room-chat-header">
+    <div id="room-chat-header-title">{title}</div>
+    {showUsersButton}
+    {leaveButton}
+  </div>
 );
 
 const RoomChatHeader = ({ room, roomActions, router }) => {
-    if (!room) {
-        return make_header("Select a room");
+  if (!room) {
+    return make_header("Select a room");
+  }
+
+  switch (room.membership) {
+    case "Member": {
+      const onClickLeave = (event) => {
+        router.push("/app/rooms");
+        roomActions.leave(room.name);
+      };
+      const leaveButton = <button onClick={onClickLeave}>Leave</button>;
+
+      let toggleUsersButton;
+      if (room.showUsers) {
+        const onClick = (event) => roomActions.hideUsers(room.name);
+        toggleUsersButton = <button onClick={onClick}>Hide users</button>;
+      } else {
+        const onClick = (event) => roomActions.showUsers(room.name);
+        toggleUsersButton = <button onClick={onClick}>Show users</button>;
+      }
+
+      return make_header(room.name, toggleUsersButton, leaveButton);
     }
 
-    switch (room.membership) {
-        case "Member":
-        {
-            const onClickLeave = (event) => {
-                router.push("/app/rooms");
-                roomActions.leave(room.name);
-            };
-            const leaveButton = <button onClick={onClickLeave}>Leave</button>;
+    case "NonMember":
+      return make_header(`Not a member of ${room.name}`);
 
-            let toggleUsersButton;
-            if (room.showUsers) {
-                const onClick = (event) => roomActions.hideUsers(room.name);
-                toggleUsersButton = (
-                    <button onClick={onClick}>Hide users</button>
-                );
-            } else {
-                const onClick = (event) => roomActions.showUsers(room.name);
-                toggleUsersButton = (
-                    <button onClick={onClick}>Show users</button>
-                );
-            }
+    case "Joining":
+      return make_header(`Joining ${room.name}`);
 
-            return make_header(room.name, toggleUsersButton, leaveButton);
-        }
-
-        case "NonMember":
-            return make_header(`Not a member of ${room.name}`);
-
-        case "Joining":
-            return make_header(`Joining ${room.name}`);
-
-        case "Leaving":
-            return make_header(`Leaving ${room.name}`);
-    }
+    case "Leaving":
+      return make_header(`Leaving ${room.name}`);
+  }
 };
 
 RoomChatHeader.propTypes = {
-    room: PropTypes.shape({
-        membership: PropTypes.string.isRequired,
-        name: PropTypes.string.isRequired,
-        showUsers: PropTypes.bool
-    }),
-    roomActions: PropTypes.shape({
-        leave: PropTypes.func.isRequired
-    }).isRequired,
-    router: PropTypes.object.isRequired
+  room: PropTypes.shape({
+    membership: PropTypes.string.isRequired,
+    name: PropTypes.string.isRequired,
+    showUsers: PropTypes.bool,
+  }),
+  roomActions: PropTypes.shape({
+    leave: PropTypes.func.isRequired,
+  }).isRequired,
+  router: PropTypes.object.isRequired,
 };
 
 export default withRouter(RoomChatHeader);
diff --git a/src/components/RoomChatMessageList.js b/src/components/RoomChatMessageList.js
index 97e730d..dca61b8 100644
--- a/src/components/RoomChatMessageList.js
+++ b/src/components/RoomChatMessageList.js
@@ -2,39 +2,38 @@ import React, { PropTypes } from "react";
 import ImmutablePropTypes from "react-immutable-proptypes";
 
 const RoomChatMessageList = ({ loginUserName, messages }) => {
-    // Append all messages in the chat room.
-    const children = [];
-    let i = 0;
-    for (const { user_name, message } of messages) {
-        if (user_name == loginUserName) {
-            children.push(
-                <li key={i} className="room-chat-message room-chat-message-me">
-                    <div className="room-chat-message-text">{message}</div>
-                </li>
-            );
-        } else {
-            children.push(
-                <li key={i} className="room-chat-message">
-                    <div className="room-chat-message-user">{user_name}</div>
-                    <div className="room-chat-message-text">{message}</div>
-                </li>
-            );
-        }
-        i++;
+  // Append all messages in the chat room.
+  const children = [];
+  let i = 0;
+  for (const { user_name, message } of messages) {
+    if (user_name == loginUserName) {
+      children.push(
+        <li key={i} className="room-chat-message room-chat-message-me">
+          <div className="room-chat-message-text">{message}</div>
+        </li>
+      );
+    } else {
+      children.push(
+        <li key={i} className="room-chat-message">
+          <div className="room-chat-message-user">{user_name}</div>
+          <div className="room-chat-message-text">{message}</div>
+        </li>
+      );
     }
+    i++;
+  }
 
-    return <ul id="room-chat-message-list">{children}</ul>;
+  return <ul id="room-chat-message-list">{children}</ul>;
 };
 
 RoomChatMessageList.propTypes = {
-    loginUserName: PropTypes.string.isRequired,
-    messages: ImmutablePropTypes.listOf(
-        PropTypes.shape({
-            user_name: PropTypes.string.isRequired,
-            message:   PropTypes.string.isRequired
-        }).isRequired
-    ).isRequired
+  loginUserName: PropTypes.string.isRequired,
+  messages: ImmutablePropTypes.listOf(
+    PropTypes.shape({
+      user_name: PropTypes.string.isRequired,
+      message: PropTypes.string.isRequired,
+    }).isRequired
+  ).isRequired,
 };
 
 export default RoomChatMessageList;
-
diff --git a/src/components/RoomList.js b/src/components/RoomList.js
index 7b02dab..f8e62e4 100644
--- a/src/components/RoomList.js
+++ b/src/components/RoomList.js
@@ -7,18 +7,18 @@ import SearchableList from "./SearchableList";
 const ComposedSearchableList = SearchableList(Room);
 
 const RoomList = ({ rooms, roomActions }) => (
-    <ComposedSearchableList
-        id="room-list"
-        itemMap={rooms}
-        refresh={roomActions.getList}
-    />
+  <ComposedSearchableList
+    id="room-list"
+    itemMap={rooms}
+    refresh={roomActions.getList}
+  />
 );
 
 RoomList.propTypes = {
-    rooms: ImmutablePropTypes.record.isRequired,
-    roomActions: PropTypes.shape({
-        getList: PropTypes.func.isRequired
-    }).isRequired
+  rooms: ImmutablePropTypes.record.isRequired,
+  roomActions: PropTypes.shape({
+    getList: PropTypes.func.isRequired,
+  }).isRequired,
 };
 
 export default RoomList;
diff --git a/src/components/RoomListHeader.js b/src/components/RoomListHeader.js
index fc00749..9826c2a 100644
--- a/src/components/RoomListHeader.js
+++ b/src/components/RoomListHeader.js
@@ -1,20 +1,20 @@
 import React, { PropTypes } from "react";
 
 const RoomListHeader = ({ refresh }) => {
-    return (
-        <div id="room-list-header">
-            <div>
-                <h2>Room List</h2>
-            </div>
-            <div>
-                <button onClick={refresh}>Refresh</button>
-            </div>
-        </div>
-    );
+  return (
+    <div id="room-list-header">
+      <div>
+        <h2>Room List</h2>
+      </div>
+      <div>
+        <button onClick={refresh}>Refresh</button>
+      </div>
+    </div>
+  );
 };
 
 RoomListHeader.propTypes = {
-    refresh: PropTypes.func.isRequired
+  refresh: PropTypes.func.isRequired,
 };
 
 export default RoomListHeader;
diff --git a/src/components/RoomUserList.js b/src/components/RoomUserList.js
index 90f400e..884ec48 100644
--- a/src/components/RoomUserList.js
+++ b/src/components/RoomUserList.js
@@ -1,25 +1,23 @@
 import React, { PropTypes } from "react";
 
 const RoomUserList = ({ users }) => {
-    // Append all users
-    const children = [];
-    let i = 0;
-    for (const user of users) {
-        children.push(
-            <li key={i} className="room-user">
-                {user}
-            </li>
-        );
-        i++;
-    }
+  // Append all users
+  const children = [];
+  let i = 0;
+  for (const user of users) {
+    children.push(
+      <li key={i} className="room-user">
+        {user}
+      </li>
+    );
+    i++;
+  }
 
-    return <ul id="room-user-list">{children}</ul>;
+  return <ul id="room-user-list">{children}</ul>;
 };
 
 RoomUserList.propTypes = {
-    users: PropTypes.arrayOf(
-       PropTypes.string.isRequired
-    ).isRequired
+  users: PropTypes.arrayOf(PropTypes.string.isRequired).isRequired,
 };
 
 export default RoomUserList;
diff --git a/src/components/SearchableList.js b/src/components/SearchableList.js
index d7452fb..63aecd5 100644
--- a/src/components/SearchableList.js
+++ b/src/components/SearchableList.js
@@ -2,64 +2,56 @@ import React, { PropTypes } from "react";
 import ImmutablePropTypes from "react-immutable-proptypes";
 
 const SearchableList = (ItemComponent) => {
-    class ComposedSearchableList extends React.Component {
-        constructor(props) {
-            super(props);
-        }
-
-        componentDidMount() {
-            const { itemMap, refresh } = this.props;
-            if (itemMap.shouldUpdate()) {
-                refresh();
-            }
-        }
-
-
-        render() {
-            const { id, itemMap, refresh } = this.props;
-
-            const children = [];
-
-            for (const [itemName, itemData] of itemMap.byName) {
-                children.push(
-                    <li key={itemName}>
-                        <ItemComponent
-                            name={itemName}
-                            data={itemData}
-                        />
-                    </li>
-                );
-            }
+  class ComposedSearchableList extends React.Component {
+    constructor(props) {
+      super(props);
+    }
 
-            const onClick = (event) => {
-                event.preventDefault();
-                refresh();
-            };
+    componentDidMount() {
+      const { itemMap, refresh } = this.props;
+      if (itemMap.shouldUpdate()) {
+        refresh();
+      }
+    }
 
-            return (
-                <div id={id}>
-                    <div id={`${id}-header`}>
-                        <div>
-                            <button onClick={onClick}>
-                                Refresh
-                            </button>
-                        </div>
-                    </div>
-                    <ul>
-                        {children}
-                    </ul>
-                </div>
-            );
-        }
+    render() {
+      const { id, itemMap, refresh } = this.props;
+
+      const children = [];
+
+      for (const [itemName, itemData] of itemMap.byName) {
+        children.push(
+          <li key={itemName}>
+            <ItemComponent name={itemName} data={itemData} />
+          </li>
+        );
+      }
+
+      const onClick = (event) => {
+        event.preventDefault();
+        refresh();
+      };
+
+      return (
+        <div id={id}>
+          <div id={`${id}-header`}>
+            <div>
+              <button onClick={onClick}>Refresh</button>
+            </div>
+          </div>
+          <ul>{children}</ul>
+        </div>
+      );
     }
+  }
 
-    ComposedSearchableList.propTypes = {
-        id:      PropTypes.string.isRequired,
-        itemMap: ImmutablePropTypes.record.isRequired,
-        refresh: PropTypes.func.isRequired
-    };
+  ComposedSearchableList.propTypes = {
+    id: PropTypes.string.isRequired,
+    itemMap: ImmutablePropTypes.record.isRequired,
+    refresh: PropTypes.func.isRequired,
+  };
 
-    return ComposedSearchableList;
+  return ComposedSearchableList;
 };
 
 export default SearchableList;
diff --git a/src/components/SocketStatusPane.tsx b/src/components/SocketStatusPane.tsx
index 1fb97ee..d4bbe12 100644
--- a/src/components/SocketStatusPane.tsx
+++ b/src/components/SocketStatusPane.tsx
@@ -17,8 +17,8 @@ function socketStateToString(socket: SocketSliceState): string {
 }
 
 interface Props {
-  socket: SocketSliceState,
-};
+  socket: SocketSliceState;
+}
 
 const SocketStatusPane: React.FC<Props> = ({ socket }: Props) => (
   <div id="socket-status-pane">
diff --git a/src/components/SolsticeApp.js b/src/components/SolsticeApp.js
index 83a8279..f4c3c9d 100644
--- a/src/components/SolsticeApp.js
+++ b/src/components/SolsticeApp.js
@@ -25,9 +25,7 @@ const ConnectedApp: React.FC<SocketRecord> = ({ socket, children }) => {
   return (
     <div id="solstice-app">
       <Header />
-      <main>
-        {children}
-      </main>
+      <main>{children}</main>
       <Footer />
     </div>
   );
@@ -39,9 +37,7 @@ const SolsticeApp = ({ socket, children }) => (
       <ConnectPage />
     </Route>
     <Route path="/">
-      <ConnectedApp socket={socket}>
-        {children}
-      </ConnectedApp>
+      <ConnectedApp socket={socket}>{children}</ConnectedApp>
     </Route>
   </Switch>
 );
diff --git a/src/components/User.js b/src/components/User.js
index bc969cb..5d7a3ab 100644
--- a/src/components/User.js
+++ b/src/components/User.js
@@ -3,20 +3,17 @@ import { Link } from "react-router";
 import md5 from "md5";
 
 const User = ({ name }) => {
-    const path = `/app/users/${md5(name)}`;
+  const path = `/app/users/${md5(name)}`;
 
-    return (
-        <Link to={path}
-            className="user"
-            activeClassName="user-selected"
-        >
-            {name}
-        </Link>
-    );
+  return (
+    <Link to={path} className="user" activeClassName="user-selected">
+      {name}
+    </Link>
+  );
 };
 
 User.propTypes = {
-    name: PropTypes.string.isRequired
+  name: PropTypes.string.isRequired,
 };
 
 export default User;
diff --git a/src/components/UserList.js b/src/components/UserList.js
index 213f5c7..e438c13 100644
--- a/src/components/UserList.js
+++ b/src/components/UserList.js
@@ -7,16 +7,16 @@ import User from "./User";
 const ComposedSearchableList = SearchableList(User);
 
 const UserList = ({ users, userActions }) => (
-    <ComposedSearchableList
-        id="user-list"
-        itemMap={users}
-        refresh={userActions.getList}
-    />
+  <ComposedSearchableList
+    id="user-list"
+    itemMap={users}
+    refresh={userActions.getList}
+  />
 );
 
 UserList.propTypes = {
-    users: ImmutablePropTypes.record.isRequired,
-    userActions: PropTypes.object.isRequired
+  users: ImmutablePropTypes.record.isRequired,
+  userActions: PropTypes.object.isRequired,
 };
 
 export default UserList;
diff --git a/src/constants/ActionTypes.js b/src/constants/ActionTypes.js
index 1571f0d..7b2239b 100644
--- a/src/constants/ActionTypes.js
+++ b/src/constants/ActionTypes.js
@@ -1,21 +1,21 @@
 // Socket actions
-export const SOCKET_SET_OPEN        = "SOCKET_SET_OPEN";
-export const SOCKET_SET_OPENING     = "SOCKET_SET_OPENING";
-export const SOCKET_SET_CLOSED      = "SOCKET_SET_CLOSED";
-export const SOCKET_SET_CLOSING     = "SOCKET_SET_CLOSING";
-export const SOCKET_SET_ERROR       = "SOCKET_SET_ERROR";
+export const SOCKET_SET_OPEN = "SOCKET_SET_OPEN";
+export const SOCKET_SET_OPENING = "SOCKET_SET_OPENING";
+export const SOCKET_SET_CLOSED = "SOCKET_SET_CLOSED";
+export const SOCKET_SET_CLOSING = "SOCKET_SET_CLOSING";
+export const SOCKET_SET_ERROR = "SOCKET_SET_ERROR";
 export const SOCKET_RECEIVE_MESSAGE = "SOCKET_RECEIVE_MESSAGE";
-export const SOCKET_SEND_MESSAGE    = "SOCKET_SEND_MESSAGE";
+export const SOCKET_SEND_MESSAGE = "SOCKET_SEND_MESSAGE";
 
 // Login actions
 export const LOGIN_GET_STATUS = "LOGIN_GET_STATUS";
 
 // Room actions
-export const ROOM_GET_LIST   = "ROOM_GET_LIST";
-export const ROOM_SELECT     = "ROOM_SELECT";
-export const ROOM_JOIN       = "ROOM_JOIN";
-export const ROOM_LEAVE      = "ROOM_LEAVE";
-export const ROOM_MESSAGE    = "ROOM_MESSAGE";
+export const ROOM_GET_LIST = "ROOM_GET_LIST";
+export const ROOM_SELECT = "ROOM_SELECT";
+export const ROOM_JOIN = "ROOM_JOIN";
+export const ROOM_LEAVE = "ROOM_LEAVE";
+export const ROOM_MESSAGE = "ROOM_MESSAGE";
 export const ROOM_SHOW_USERS = "ROOM_SHOW_USERS";
 export const ROOM_HIDE_USERS = "ROOM_HIDE_USERS";
 
diff --git a/src/containers/ConnectPage.js b/src/containers/ConnectPage.js
index 49d6917..d7cc2b0 100644
--- a/src/containers/ConnectPage.js
+++ b/src/containers/ConnectPage.js
@@ -2,7 +2,7 @@ import { useDispatch, useSelector } from "react-redux";
 import { useLocation } from "react-router";
 import { Redirect } from "react-router-dom";
 
-import ConnectForm from  "../components/ConnectForm";
+import ConnectForm from "../components/ConnectForm";
 import { LoginStatus, selectLogin } from "../modules/login/slice";
 import { loginStatusRequest } from "../modules/login/message";
 import {
@@ -27,18 +27,20 @@ const ConnectPage: React.FC = () => {
     // not seem to respond to our request for the login status, however. Until
     // that is the case, we cannot block on receiving a response...
     return (
-      <Redirect to={{
-        pathname: "/app/rooms",
-        state: { from: location },
-      }} />
+      <Redirect
+        to={{
+          pathname: "/app/rooms",
+          state: { from: location },
+        }}
+      />
     );
   }
 
   return (
-      <div id="connect-page">
-          <ConnectForm socket={socket} />
-      </div>
+    <div id="connect-page">
+      <ConnectForm socket={socket} />
+    </div>
   );
-}
+};
 
 export default ConnectPage;
diff --git a/src/containers/Footer.js b/src/containers/Footer.js
index 2aded09..71c634a 100644
--- a/src/containers/Footer.js
+++ b/src/containers/Footer.js
@@ -16,6 +16,6 @@ const Footer: FC = () => {
       <LoginStatusPane login={login} />
     </footer>
   );
-}
+};
 
 export default Footer;
diff --git a/src/containers/RoomsPane.js b/src/containers/RoomsPane.js
index 954d568..7adc4a8 100644
--- a/src/containers/RoomsPane.js
+++ b/src/containers/RoomsPane.js
@@ -10,66 +10,58 @@ import RoomList from "../components/RoomList";
 import RoomUserList from "../components/RoomUserList";
 
 const RoomsPane = (props) => {
-    const { loginUserName, params, rooms, roomActions } = props;
+  const { loginUserName, params, rooms, roomActions } = props;
 
-    let roomName;
-    let roomChat;
+  let roomName;
+  let roomChat;
 
-    if (params && params.roomNameHash) {
-        roomName = rooms.getNameByHash(params.roomNameHash);
+  if (params && params.roomNameHash) {
+    roomName = rooms.getNameByHash(params.roomNameHash);
 
-        const roomData = rooms.getByName(roomName);
+    const roomData = rooms.getByName(roomName);
 
-        if (roomData) {
-            const room = {
-                name: roomName,
-                membership: roomData.membership,
-                messages:   roomData.messages,
-                showUsers:  roomData.showUsers
-            };
+    if (roomData) {
+      const room = {
+        name: roomName,
+        membership: roomData.membership,
+        messages: roomData.messages,
+        showUsers: roomData.showUsers,
+      };
 
-            roomChat = (
-                <RoomChat
-                    loginUserName={loginUserName}
-                    room={room}
-                    roomActions={roomActions}
-                />
-            );
-        }
+      roomChat = (
+        <RoomChat
+          loginUserName={loginUserName}
+          room={room}
+          roomActions={roomActions}
+        />
+      );
     }
+  }
 
-    return (
-        <div id="rooms-pane">
-            <RoomList
-                rooms={rooms}
-                roomActions={roomActions}
-            />
-            <div id="room-selected-pane">
-                {roomChat}
-            </div>
-        </div>
-    );
+  return (
+    <div id="rooms-pane">
+      <RoomList rooms={rooms} roomActions={roomActions} />
+      <div id="room-selected-pane">{roomChat}</div>
+    </div>
+  );
 };
 
 RoomsPane.propTypes = {
-    loginUserName: PropTypes.string.isRequired,
-    params:        PropTypes.shape({
-        roomNameHash: PropTypes.string
-    }),
-    rooms:       ImmutablePropTypes.record.isRequired,
-    roomActions: PropTypes.object.isRequired
+  loginUserName: PropTypes.string.isRequired,
+  params: PropTypes.shape({
+    roomNameHash: PropTypes.string,
+  }),
+  rooms: ImmutablePropTypes.record.isRequired,
+  roomActions: PropTypes.object.isRequired,
 };
 
 const mapStateToProps = (state) => ({
-    loginUserName: state.login.username,
-    rooms:         state.rooms
+  loginUserName: state.login.username,
+  rooms: state.rooms,
 });
 
 const mapDispatchToProps = (dispatch) => ({
-    roomActions: bindActionCreators(RoomActions, dispatch)
+  roomActions: bindActionCreators(RoomActions, dispatch),
 });
 
-export default connect(
-    mapStateToProps,
-    mapDispatchToProps
-)(RoomsPane);
+export default connect(mapStateToProps, mapDispatchToProps)(RoomsPane);
diff --git a/src/containers/UsersPane.js b/src/containers/UsersPane.js
index a300a80..aceaf73 100644
--- a/src/containers/UsersPane.js
+++ b/src/containers/UsersPane.js
@@ -8,25 +8,22 @@ import UserActions from "../actions/UserActions";
 import UserList from "../components/UserList";
 
 const UsersPane = ({ users, userActions }) => {
-    return (
-        <div id="users-pane">
-            <UserList users={users} userActions={userActions} />
-        </div>
-    );
+  return (
+    <div id="users-pane">
+      <UserList users={users} userActions={userActions} />
+    </div>
+  );
 };
 
 UsersPane.propTypes = {
-    users:       ImmutablePropTypes.record.isRequired,
-    userActions: PropTypes.object.isRequired
+  users: ImmutablePropTypes.record.isRequired,
+  userActions: PropTypes.object.isRequired,
 };
 
 const mapStateToProps = ({ users }) => ({ users });
 
 const mapDispatchToProps = (dispatch) => ({
-    userActions: bindActionCreators(UserActions, dispatch)
+  userActions: bindActionCreators(UserActions, dispatch),
 });
 
-export default connect(
-    mapStateToProps,
-    mapDispatchToProps
-)(UsersPane);
+export default connect(mapStateToProps, mapDispatchToProps)(UsersPane);
diff --git a/src/features/counter/Counter.module.css b/src/features/counter/Counter.module.css
index 025bb72..ce3e2d3 100644
--- a/src/features/counter/Counter.module.css
+++ b/src/features/counter/Counter.module.css
@@ -18,7 +18,7 @@
   padding-left: 16px;
   padding-right: 16px;
   margin-top: 2px;
-  font-family: 'Courier New', Courier, monospace;
+  font-family: "Courier New", Courier, monospace;
 }
 
 .button {
@@ -60,7 +60,7 @@
 }
 
 .asyncButton:after {
-  content: '';
+  content: "";
   background-color: rgba(112, 76, 182, 0.15);
   display: block;
   position: absolute;
diff --git a/src/features/counter/Counter.tsx b/src/features/counter/Counter.tsx
index ece5191..39063d8 100644
--- a/src/features/counter/Counter.tsx
+++ b/src/features/counter/Counter.tsx
@@ -1,6 +1,6 @@
-import React, { useState } from 'react';
+import React, { useState } from "react";
 
-import { useAppSelector, useAppDispatch } from '../../app/hooks';
+import { useAppSelector, useAppDispatch } from "../../app/hooks";
 import {
   decrement,
   increment,
@@ -8,13 +8,13 @@ import {
   incrementAsync,
   incrementIfOdd,
   selectCount,
-} from './counterSlice';
-import styles from './Counter.module.css';
+} from "./counterSlice";
+import styles from "./Counter.module.css";
 
 export function Counter() {
   const count = useAppSelector(selectCount);
   const dispatch = useAppDispatch();
-  const [incrementAmount, setIncrementAmount] = useState('2');
+  const [incrementAmount, setIncrementAmount] = useState("2");
 
   const incrementValue = Number(incrementAmount) || 0;
 
diff --git a/src/features/counter/counterSlice.spec.ts b/src/features/counter/counterSlice.spec.ts
index 098163b..1ce1976 100644
--- a/src/features/counter/counterSlice.spec.ts
+++ b/src/features/counter/counterSlice.spec.ts
@@ -3,31 +3,31 @@ import counterReducer, {
   increment,
   decrement,
   incrementByAmount,
-} from './counterSlice';
+} from "./counterSlice";
 
-describe('counter reducer', () => {
+describe("counter reducer", () => {
   const initialState: CounterState = {
     value: 3,
-    status: 'idle',
+    status: "idle",
   };
-  it('should handle initial state', () => {
-    expect(counterReducer(undefined, { type: 'unknown' })).toEqual({
+  it("should handle initial state", () => {
+    expect(counterReducer(undefined, { type: "unknown" })).toEqual({
       value: 0,
-      status: 'idle',
+      status: "idle",
     });
   });
 
-  it('should handle increment', () => {
+  it("should handle increment", () => {
     const actual = counterReducer(initialState, increment());
     expect(actual.value).toEqual(4);
   });
 
-  it('should handle decrement', () => {
+  it("should handle decrement", () => {
     const actual = counterReducer(initialState, decrement());
     expect(actual.value).toEqual(2);
   });
 
-  it('should handle incrementByAmount', () => {
+  it("should handle incrementByAmount", () => {
     const actual = counterReducer(initialState, incrementByAmount(2));
     expect(actual.value).toEqual(5);
   });
diff --git a/src/features/counter/counterSlice.ts b/src/features/counter/counterSlice.ts
index 0010332..8fbc431 100644
--- a/src/features/counter/counterSlice.ts
+++ b/src/features/counter/counterSlice.ts
@@ -1,15 +1,15 @@
-import { createAsyncThunk, createSlice, PayloadAction } from '@reduxjs/toolkit';
-import { RootState, AppThunk } from '../../app/store';
-import { fetchCount } from './counterAPI';
+import { createAsyncThunk, createSlice, PayloadAction } from "@reduxjs/toolkit";
+import { RootState, AppThunk } from "../../app/store";
+import { fetchCount } from "./counterAPI";
 
 export interface CounterState {
   value: number;
-  status: 'idle' | 'loading' | 'failed';
+  status: "idle" | "loading" | "failed";
 }
 
 const initialState: CounterState = {
   value: 0,
-  status: 'idle',
+  status: "idle",
 };
 
 // The function below is called a thunk and allows us to perform async logic. It
@@ -18,7 +18,7 @@ const initialState: CounterState = {
 // code can then be executed and other actions can be dispatched. Thunks are
 // typically used to make async requests.
 export const incrementAsync = createAsyncThunk(
-  'counter/fetchCount',
+  "counter/fetchCount",
   async (amount: number) => {
     const response = await fetchCount(amount);
     // The value we return becomes the `fulfilled` action payload
@@ -27,7 +27,7 @@ export const incrementAsync = createAsyncThunk(
 );
 
 export const counterSlice = createSlice({
-  name: 'counter',
+  name: "counter",
   initialState,
   // The `reducers` field lets us define reducers and generate associated actions
   reducers: {
@@ -51,10 +51,10 @@ export const counterSlice = createSlice({
   extraReducers: (builder) => {
     builder
       .addCase(incrementAsync.pending, (state) => {
-        state.status = 'loading';
+        state.status = "loading";
       })
       .addCase(incrementAsync.fulfilled, (state, action) => {
-        state.status = 'idle';
+        state.status = "idle";
         state.value += action.payload;
       });
   },
@@ -69,14 +69,13 @@ export const selectCount = (state: RootState) => state.counter.value;
 
 // We can also write thunks by hand, which may contain both sync and async logic.
 // Here's an example of conditionally dispatching actions based on current state.
-export const incrementIfOdd = (amount: number): AppThunk => (
-  dispatch,
-  getState
-) => {
-  const currentValue = selectCount(getState());
-  if (currentValue % 2 === 1) {
-    dispatch(incrementByAmount(amount));
-  }
-};
+export const incrementIfOdd =
+  (amount: number): AppThunk =>
+  (dispatch, getState) => {
+    const currentValue = selectCount(getState());
+    if (currentValue % 2 === 1) {
+      dispatch(incrementByAmount(amount));
+    }
+  };
 
 export default counterSlice.reducer;
diff --git a/src/index.tsx b/src/index.tsx
index bdc712e..0a790c1 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -1,9 +1,9 @@
-import React from 'react';
-import ReactDOM from 'react-dom';
-import { Provider } from 'react-redux';
+import React from "react";
+import ReactDOM from "react-dom";
+import { Provider } from "react-redux";
 import { BrowserRouter as Router } from "react-router-dom";
 
-import './styles/styles.scss';
+import "./styles/styles.scss";
 
 import { store } from "./app/store";
 
@@ -17,5 +17,5 @@ ReactDOM.render(
       </Router>
     </Provider>
   </React.StrictMode>,
-  document.getElementById('root')
+  document.getElementById("root")
 );
diff --git a/src/modules/login/message.ts b/src/modules/login/message.ts
index cb4f6af..1848bc1 100644
--- a/src/modules/login/message.ts
+++ b/src/modules/login/message.ts
@@ -5,7 +5,7 @@ export function loginStatusRequest(): SocketMessage {
   return {
     variant: "LoginStatusRequest",
     fields: [],
-  }
+  };
 }
 
 const loginStatusResponseHandler: SocketMessageHandler = {
@@ -14,14 +14,14 @@ const loginStatusResponseHandler: SocketMessageHandler = {
   handleData: ({ variant, fields }) => {
     switch (variant) {
       case "Pending": {
-        const [ username ] = fields;
+        const [username] = fields;
         return loginSetState({
           status: LoginStatus.Pending,
           username,
         });
       }
       case "Success": {
-        const [ username, motd ] = data.fields;
+        const [username, motd] = data.fields;
         return loginSetState({
           status: LoginStatus.Success,
           username,
@@ -30,7 +30,7 @@ const loginStatusResponseHandler: SocketMessageHandler = {
       }
 
       case "Failure": {
-        const [ username, reason ] = data.fields;
+        const [username, reason] = data.fields;
         return loginSetState({
           status: LoginStatus.Failure,
           username,
@@ -41,6 +41,4 @@ const loginStatusResponseHandler: SocketMessageHandler = {
   },
 };
 
-export const loginSocketMessageHandlers = [
-  loginStatusResponseHandler,
-];
+export const loginSocketMessageHandlers = [loginStatusResponseHandler];
diff --git a/src/modules/login/slice.ts b/src/modules/login/slice.ts
index 981a95c..9a1c6af 100644
--- a/src/modules/login/slice.ts
+++ b/src/modules/login/slice.ts
@@ -1,6 +1,6 @@
-import { createAction, createSlice, PayloadAction } from '@reduxjs/toolkit';
+import { createAction, createSlice, PayloadAction } from "@reduxjs/toolkit";
 
-import { RootState } from '../../app/store';
+import { RootState } from "../../app/store";
 
 export enum LoginStatus {
   Unknown,
@@ -8,14 +8,14 @@ export enum LoginStatus {
   Pending,
   Success,
   Failure,
-};
+}
 
 export interface LoginSliceState {
-  status: LoginStatus,
-  username?: string,
-  motd?: string,
-  reason?: string,
-};
+  status: LoginStatus;
+  username?: string;
+  motd?: string;
+  reason?: string;
+}
 
 const initialState: LoginSliceState = {
   status: LoginStatus.Unknown,
@@ -25,13 +25,15 @@ const initialState: LoginSliceState = {
 };
 
 export const loginSlice = createSlice({
-  name: 'login',
+  name: "login",
   initialState,
   reducers: {
-    loginSetState:
-      (state: RootState, action: PayloadAction<LoginSliceState>) => {
-        state = action.payload;
-      },
+    loginSetState: (
+      state: RootState,
+      action: PayloadAction<LoginSliceState>
+    ) => {
+      state = action.payload;
+    },
   },
 });
 
diff --git a/src/modules/websocket/actions.ts b/src/modules/websocket/actions.ts
index 6aa538f..eb33ce7 100644
--- a/src/modules/websocket/actions.ts
+++ b/src/modules/websocket/actions.ts
@@ -1,5 +1,5 @@
-export const wsConnect = host => ({ type: 'WS_CONNECT', host });
-export const wsConnecting = host => ({ type: 'WS_CONNECTING', host });
-export const wsConnected = host => ({ type: 'WS_CONNECTED', host });
-export const wsDisconnect = () => ({ type: 'WS_DISCONNECT' });
-export const wsDisconnected = () => ({ type: 'WS_DISCONNECTED' });
+export const wsConnect = (host) => ({ type: "WS_CONNECT", host });
+export const wsConnecting = (host) => ({ type: "WS_CONNECTING", host });
+export const wsConnected = (host) => ({ type: "WS_CONNECTED", host });
+export const wsDisconnect = () => ({ type: "WS_DISCONNECT" });
+export const wsDisconnected = () => ({ type: "WS_DISCONNECTED" });
diff --git a/src/modules/websocket/message.ts b/src/modules/websocket/message.ts
index 2a555f6..3162b29 100644
--- a/src/modules/websocket/message.ts
+++ b/src/modules/websocket/message.ts
@@ -4,9 +4,9 @@ import { PayloadAction } from "@reduxjs/toolkit";
 
 // The type of a message exchanged over a websocket.
 export interface SocketMessage {
-  variant: string,
-  fields?: List<any>,
-};
+  variant: string;
+  fields?: List<any>;
+}
 
 // Serializes the given message for sending over the wire.
 export function serializeMessage(message: SocketMessage): string {
@@ -22,7 +22,7 @@ export function parseMessage(serialized: string): SocketMessage {
   }
 
   return { variant, fields };
-};
+}
 
 // Handles the `data` field of a `SocketMessage` and returns an optional action.
 export type SocketMessageDataHandler = (any) => PayloadAction<any> | undefined;
@@ -34,6 +34,6 @@ export type SocketMessageDataHandler = (any) => PayloadAction<any> | undefined;
 // their actions only. Otherwise, most reducers would have to handle all
 // incoming messages.
 export interface SocketMessageHandler {
-  variant: string,
-  handleData: SocketMessageDataHandler,
-};
+  variant: string;
+  handleData: SocketMessageDataHandler;
+}
diff --git a/src/modules/websocket/middleware.ts b/src/modules/websocket/middleware.ts
index 5f658e4..6a762dd 100644
--- a/src/modules/websocket/middleware.ts
+++ b/src/modules/websocket/middleware.ts
@@ -23,8 +23,8 @@ import { AppDispatch, RootState } from "../app/store";
 // TODO: use undefined instead, it is more idiomatic.
 let socket: WebSocket | null = null;
 
-const onOpen = (dispatch: AppDispatch) => event => {
-  console.log('Websocket open', event.target.url);
+const onOpen = (dispatch: AppDispatch) => (event) => {
+  console.log("Websocket open", event.target.url);
   dispatch(socketOpened(event.target.url));
 };
 
@@ -32,8 +32,9 @@ const onClose = (dispatch: AppDispatch) => () => {
   dispatch(socketClosed());
 };
 
-function prepareHandlers(handlers: SocketMessageHandler[])
-  : Map<string, SocketMessageDataHandler[]> {
+function prepareHandlers(
+  handlers: SocketMessageHandler[]
+): Map<string, SocketMessageDataHandler[]> {
   const map = new Map();
 
   for (const handler of handlers) {
@@ -54,35 +55,36 @@ function prepareHandlers(handlers: SocketMessageHandler[])
 const onMessage =
   (dispatch: AppDispatch, handlers: Map<string, SocketMessageDataHandler[]>) =>
   (event: MessageEvent) => {
-  console.log("Websocket received message", event.data);
-
-  let message;
-  try {
-    message = parseMessage(event.data);
-  } catch (err) {
-    console.log("Websocket received invalid message:", err);
-    return;
-  }
+    console.log("Websocket received message", event.data);
+
+    let message;
+    try {
+      message = parseMessage(event.data);
+    } catch (err) {
+      console.log("Websocket received invalid message:", err);
+      return;
+    }
 
-  const list = handlers.get(message.variant);
-  if (list === undefined) {
-    return;
-  }
+    const list = handlers.get(message.variant);
+    if (list === undefined) {
+      return;
+    }
 
-  for (handler of list) {
-    const action = handler(message);
-    if (action !== undefined) {
-      dispatch(action);
+    for (handler of list) {
+      const action = handler(message);
+      if (action !== undefined) {
+        dispatch(action);
+      }
     }
-  }
-};
+  };
 
 // See: https://redux.js.org/tutorials/fundamentals/part-4-store#writing-custom-middleware
-function makeMiddleware(handlers: SocketMessageHandler[])
-  : Middleware<{}, RootState> {
+function makeMiddleware(
+  handlers: SocketMessageHandler[]
+): Middleware<{}, RootState> {
   const handlerMap = prepareHandlers(handlers);
 
-  return storeApi => next => action => {
+  return (storeApi) => (next) => (action) => {
     if (socketOpen.match(action)) {
       if (socket !== null) {
         socket.close();
@@ -95,17 +97,15 @@ function makeMiddleware(handlers: SocketMessageHandler[])
       socket.onmessage = onMessage(storeApi.dispatch, handlerMap);
       socket.onclose = onClose(storeApi.dispatch);
       socket.onopen = onOpen(storeApi.dispatch);
-
     } else if (socketClose.match(action)) {
       if (socket !== null) {
         socket.close();
       }
 
       socket = null;
-      console.log('Websocket closed.');
-
+      console.log("Websocket closed.");
     } else if (socketSendMessage.match(action)) {
-      console.log('Websocket sending message', action.payload);
+      console.log("Websocket sending message", action.payload);
       socket.send(JSON.stringify(action.payload));
     }
 
diff --git a/src/modules/websocket/slice.ts b/src/modules/websocket/slice.ts
index ce4f8d7..0ff6a34 100644
--- a/src/modules/websocket/slice.ts
+++ b/src/modules/websocket/slice.ts
@@ -1,26 +1,26 @@
-import { createAction, createSlice, PayloadAction } from '@reduxjs/toolkit';
+import { createAction, createSlice, PayloadAction } from "@reduxjs/toolkit";
 
 import { SocketMessage } from "./message";
-import { RootState } from '../../app/store';
+import { RootState } from "../../app/store";
 
 export enum SocketState {
   Opening,
   Open,
   Closing,
   Closed,
-};
+}
 
 export interface SocketSliceState {
-  state: SocketState,
-  url?: string,
-};
+  state: SocketState;
+  url?: string;
+}
 
 const initialState: SocketSliceState = {
   state: SocketState.Closed,
 };
 
 export const socketSlice = createSlice({
-  name: 'socket',
+  name: "socket",
   initialState,
   reducers: {
     socketOpen: (state, action: PayloadAction<string>) => {
diff --git a/src/reducers/index.js b/src/reducers/index.js
index 7fe5266..2f29fd4 100644
--- a/src/reducers/index.js
+++ b/src/reducers/index.js
@@ -7,11 +7,11 @@ import socket from "./socket";
 import users from "./users";
 
 const rootReducer = combineReducers({
-    login,
-    rooms,
-    socket,
-    users,
-    form
+  login,
+  rooms,
+  socket,
+  users,
+  form,
 });
 
 export default rootReducer;
diff --git a/src/reducers/login.js b/src/reducers/login.js
index 5c490df..3977fbc 100644
--- a/src/reducers/login.js
+++ b/src/reducers/login.js
@@ -1,75 +1,75 @@
 import Immutable from "immutable";
 
 import {
-    LOGIN_GET_STATUS,
-    SOCKET_RECEIVE_MESSAGE
+  LOGIN_GET_STATUS,
+  SOCKET_RECEIVE_MESSAGE,
 } from "../constants/ActionTypes";
 
 import {
-    LOGIN_STATUS_UNKNOWN,
-    LOGIN_STATUS_GETTING,
-    LOGIN_STATUS_PENDING,
-    LOGIN_STATUS_SUCCESS,
-    LOGIN_STATUS_FAILURE
+  LOGIN_STATUS_UNKNOWN,
+  LOGIN_STATUS_GETTING,
+  LOGIN_STATUS_PENDING,
+  LOGIN_STATUS_SUCCESS,
+  LOGIN_STATUS_FAILURE,
 } from "../constants/login";
 
 const LoginRecord = Immutable.Record({
-    status:   LOGIN_STATUS_UNKNOWN,
-    username: undefined,
-    motd:     undefined,
-    reason:   undefined
+  status: LOGIN_STATUS_UNKNOWN,
+  username: undefined,
+  motd: undefined,
+  reason: undefined,
 });
 
 const initialState = new LoginRecord();
 
 const reduceReceiveMessage = (state, message) => {
-    const { variant, data } = message;
+  const { variant, data } = message;
 
-    if (variant !== "LoginStatusResponse") {
-        return state;
-    }
-
-    switch (data.variant) {
-        case "Pending":
-        { // sub-block required otherwise const username declarations clash
-            const [ username ] = data.fields;
-            return state
-                .set("status", LOGIN_STATUS_PENDING)
-                .set("username", username);
-        }
-        case "Success":
-        { // sub-block required otherwise const username declarations clash
-            const [ username, motd ] = data.fields;
-            return state
-                .set("status", LOGIN_STATUS_SUCCESS)
-                .set("username", username)
-                .set("motd", motd);
-        }
+  if (variant !== "LoginStatusResponse") {
+    return state;
+  }
 
-        case "Failure":
-        { // sub-block required otherwise const username declarations clash
-            const [ username, reason ] = data.fields;
-            return state
-                .set("status", LOGIN_STATUS_FAILURE)
-                .set("username", username)
-                .set("reason", reason);
-        }
+  switch (data.variant) {
+    case "Pending": {
+      // sub-block required otherwise const username declarations clash
+      const [username] = data.fields;
+      return state
+        .set("status", LOGIN_STATUS_PENDING)
+        .set("username", username);
+    }
+    case "Success": {
+      // sub-block required otherwise const username declarations clash
+      const [username, motd] = data.fields;
+      return state
+        .set("status", LOGIN_STATUS_SUCCESS)
+        .set("username", username)
+        .set("motd", motd);
+    }
 
-        default:
-            return state;
+    case "Failure": {
+      // sub-block required otherwise const username declarations clash
+      const [username, reason] = data.fields;
+      return state
+        .set("status", LOGIN_STATUS_FAILURE)
+        .set("username", username)
+        .set("reason", reason);
     }
+
+    default:
+      return state;
+  }
 };
 
 export default (state = initialState, action) => {
-    const { type, payload } = action;
-    switch (type) {
-        case LOGIN_GET_STATUS:
-            return state.set("status", LOGIN_STATUS_GETTING);
+  const { type, payload } = action;
+  switch (type) {
+    case LOGIN_GET_STATUS:
+      return state.set("status", LOGIN_STATUS_GETTING);
 
-        case SOCKET_RECEIVE_MESSAGE:
-            return reduceReceiveMessage(state, payload);
+    case SOCKET_RECEIVE_MESSAGE:
+      return reduceReceiveMessage(state, payload);
 
-        default:
-            return state;
-    }
+    default:
+      return state;
+  }
 };
diff --git a/src/reducers/rooms.js b/src/reducers/rooms.js
index 8c36549..617bd4a 100644
--- a/src/reducers/rooms.js
+++ b/src/reducers/rooms.js
@@ -3,124 +3,121 @@ import Immutable from "immutable";
 import OrderedMap from "../utils/OrderedMap";
 
 import {
-    ROOM_JOIN,
-    ROOM_LEAVE,
-    ROOM_MESSAGE,
-    ROOM_SHOW_USERS,
-    ROOM_HIDE_USERS,
-    SOCKET_RECEIVE_MESSAGE
+  ROOM_JOIN,
+  ROOM_LEAVE,
+  ROOM_MESSAGE,
+  ROOM_SHOW_USERS,
+  ROOM_HIDE_USERS,
+  SOCKET_RECEIVE_MESSAGE,
 } from "../constants/ActionTypes";
 
 const RoomRecord = Immutable.Record({
-    membership: "",
-    visibility: "",
-    operated:   false,
-    userCount:  0,
-    owner:      "",
-    operators:  Immutable.Map(),
-    members:    Immutable.Map(),
-    messages:   Immutable.List(),
-    tickers:    Immutable.List()
+  membership: "",
+  visibility: "",
+  operated: false,
+  userCount: 0,
+  owner: "",
+  operators: Immutable.Map(),
+  members: Immutable.Map(),
+  messages: Immutable.List(),
+  tickers: Immutable.List(),
 });
 
 const initialState = OrderedMap();
 
 const reduceReceiveMessageRoom = (roomData, { variant, data }) => {
-    switch (variant) {
-        case "RoomJoinResponse":
-            return roomData.set("membership", "Member");
-
-        case "RoomLeaveResponse":
-            return roomData.set("membership", "NonMember");
-
-        case "RoomMessageResponse":
-        {
-            const { user_name, message } = data;
-            const messages = roomData.messages.push({user_name, message});
-            return roomData.set("messages", messages);
-        }
+  switch (variant) {
+    case "RoomJoinResponse":
+      return roomData.set("membership", "Member");
+
+    case "RoomLeaveResponse":
+      return roomData.set("membership", "NonMember");
+
+    case "RoomMessageResponse": {
+      const { user_name, message } = data;
+      const messages = roomData.messages.push({ user_name, message });
+      return roomData.set("messages", messages);
     }
+  }
 };
 
 const reduceReceiveMessage = (state, message) => {
-    const { variant, data } = message;
-    switch (variant) {
-        case "RoomJoinResponse":
-        case "RoomLeaveResponse":
-        case "RoomMessageResponse":
-        {
-            const { room_name } = data;
-            return state.updateByName(data.room_name, (roomData) => {
-                if (roomData) {
-                    return reduceReceiveMessageRoom(roomData, message);
-                } else {
-                    console.log(`Error: unknown room ${data.room_name}`);
-                    return roomData;
-                }
-            });
+  const { variant, data } = message;
+  switch (variant) {
+    case "RoomJoinResponse":
+    case "RoomLeaveResponse":
+    case "RoomMessageResponse": {
+      const { room_name } = data;
+      return state.updateByName(data.room_name, (roomData) => {
+        if (roomData) {
+          return reduceReceiveMessageRoom(roomData, message);
+        } else {
+          console.log(`Error: unknown room ${data.room_name}`);
+          return roomData;
         }
-
-        case "RoomListResponse":
-            return state.updateAll(data.rooms, (newData, oldData) => {
-                if(!oldData) {
-                    oldData = RoomRecord();
-                }
-                return oldData
-                    .set("membership", newData.membership)
-                    .set("visibility", newData.visibility)
-                    .set("operated",   newData.operated)
-                    .set("userCount",  newData.user_count)
-                    .set("owner",      newData.owner)
-                    .set("operators",  newData.operators)
-                    .set("members",    newData.members)
-                    .set("tickers",    newData.tickers);
-            });
-
-        default:
-            return state;
+      });
     }
+
+    case "RoomListResponse":
+      return state.updateAll(data.rooms, (newData, oldData) => {
+        if (!oldData) {
+          oldData = RoomRecord();
+        }
+        return oldData
+          .set("membership", newData.membership)
+          .set("visibility", newData.visibility)
+          .set("operated", newData.operated)
+          .set("userCount", newData.user_count)
+          .set("owner", newData.owner)
+          .set("operators", newData.operators)
+          .set("members", newData.members)
+          .set("tickers", newData.tickers);
+      });
+
+    default:
+      return state;
+  }
 };
 
 const reduceRoom = (roomData, { type, payload }) => {
-    switch (type) {
-        case ROOM_JOIN:
-            return roomData.set("membership", "Joining");
+  switch (type) {
+    case ROOM_JOIN:
+      return roomData.set("membership", "Joining");
 
-        case ROOM_LEAVE:
-            return roomData.set("membership", "Leaving");
+    case ROOM_LEAVE:
+      return roomData.set("membership", "Leaving");
 
-        case ROOM_SHOW_USERS:
-            return roomData.set("showUsers", true);
+    case ROOM_SHOW_USERS:
+      return roomData.set("showUsers", true);
 
-        case ROOM_HIDE_USERS:
-            return roomData.set("showUsers", false);
-    }
+    case ROOM_HIDE_USERS:
+      return roomData.set("showUsers", false);
+  }
 };
 
 export default (state = initialState, action) => {
-    const { type, payload } = action;
-
-    switch (type) {
-        case SOCKET_RECEIVE_MESSAGE:
-            return reduceReceiveMessage(state, payload);
-
-        case ROOM_JOIN:
-        case ROOM_LEAVE:
-        case ROOM_SHOW_USERS:
-        case ROOM_HIDE_USERS:
-        {
-            return state.updateByName(payload, (roomData) => {
-                if (roomData) {
-                    return reduceRoom(roomData, action);
-                } else {
-                    console.log(`Error: unknown room ${payload}`);
-                    return roomData;
-                }
-            });
+  const { type, payload } = action;
+
+  switch (type) {
+    case SOCKET_RECEIVE_MESSAGE:
+      return reduceReceiveMessage(state, payload);
+
+    case ROOM_JOIN:
+    case ROOM_LEAVE:
+    case ROOM_SHOW_USERS:
+    case ROOM_HIDE_USERS: {
+      return state.updateByName(payload, (roomData) => {
+        if (roomData) {
+          return reduceRoom(roomData, action);
+        } else {
+          console.log(`Error: unknown room ${payload}`);
+          return roomData;
         }
-
-        case ROOM_MESSAGE:
-        default:
-            return state;
+      });
     }
+
+    case ROOM_MESSAGE:
+    default:
+      return state;
+  }
 };
diff --git a/src/reducers/socket.js b/src/reducers/socket.js
index 5d37545..9a8f270 100644
--- a/src/reducers/socket.js
+++ b/src/reducers/socket.js
@@ -2,92 +2,93 @@ import Immutable from "immutable";
 
 import * as types from "../constants/ActionTypes";
 import {
-    STATE_OPENING, STATE_OPEN, STATE_CLOSING, STATE_CLOSED
+  STATE_OPENING,
+  STATE_OPEN,
+  STATE_CLOSING,
+  STATE_CLOSED,
 } from "../constants/socket";
 
 import ControlRequest from "../utils/ControlRequest";
 
 export const SocketRecord = Immutable.Record({
-    state:  STATE_CLOSED,
-    socket: undefined,
-    url:    undefined
+  state: STATE_CLOSED,
+  socket: undefined,
+  url: undefined,
 });
 
 const initialState = new SocketRecord();
 
 export default (state = initialState, { type, payload }) => {
-    const sendRequest = (controlRequest) => {
-        try {
-            state.socket.send(JSON.stringify(controlRequest));
-        } catch (err) {
-            console.log(`Socket error: failed to send ${controlRequest}`);
-        }
-    };
-
-    switch (type) {
-        case types.SOCKET_SET_OPENING:
-        {
-            if (state.state !== STATE_CLOSED) {
-                console.log("Cannot open socket, already open");
-                return state;
-            }
-
-            const { url, onopen, onclose, onerror, onmessage } = payload;
-            const socket = new WebSocket(url);
-            socket.onopen = onopen;
-            socket.onclose = onclose;
-            socket.onerror = onerror;
-            socket.onmessage = onmessage;
-
-            return state
-                .set("state", STATE_OPENING)
-                .set("socket", socket)
-                .set("url", url);
-        }
-
-        case types.SOCKET_SET_OPEN:
-            return state.set("state", STATE_OPEN);
-
-        case types.SOCKET_SET_CLOSING:
-            // Ooh bad stateful reducing...
-            state.socket.close();
-            return state.set("state", STATE_CLOSING);
-
-        case types.SOCKET_SET_CLOSED:
-            return state.set("state", STATE_CLOSED);
-
-        case types.SOCKET_SET_ERROR:
-            console.log("Socket error");
-            return state.set("state", state.socket.readyState);
-
-        case types.LOGIN_GET_STATUS:
-            sendRequest(ControlRequest.loginStatus());
-            return state;
-
-        case types.ROOM_GET_LIST:
-            sendRequest(ControlRequest.roomList());
-            return state;
-
-        case types.ROOM_JOIN:
-            sendRequest(ControlRequest.roomJoin(payload));
-            return state;
-
-        case types.ROOM_LEAVE:
-            sendRequest(ControlRequest.roomLeave(payload));
-            return state;
-
-        case types.ROOM_MESSAGE:
-        {
-            const { room_name, message } = payload;
-            sendRequest(ControlRequest.roomMessage(room_name, message));
-            return state;
-        }
-
-        case types.USER_GET_LIST:
-            sendRequest(ControlRequest.userList());
-            return state;
-
-        default:
-            return state;
+  const sendRequest = (controlRequest) => {
+    try {
+      state.socket.send(JSON.stringify(controlRequest));
+    } catch (err) {
+      console.log(`Socket error: failed to send ${controlRequest}`);
     }
+  };
+
+  switch (type) {
+    case types.SOCKET_SET_OPENING: {
+      if (state.state !== STATE_CLOSED) {
+        console.log("Cannot open socket, already open");
+        return state;
+      }
+
+      const { url, onopen, onclose, onerror, onmessage } = payload;
+      const socket = new WebSocket(url);
+      socket.onopen = onopen;
+      socket.onclose = onclose;
+      socket.onerror = onerror;
+      socket.onmessage = onmessage;
+
+      return state
+        .set("state", STATE_OPENING)
+        .set("socket", socket)
+        .set("url", url);
+    }
+
+    case types.SOCKET_SET_OPEN:
+      return state.set("state", STATE_OPEN);
+
+    case types.SOCKET_SET_CLOSING:
+      // Ooh bad stateful reducing...
+      state.socket.close();
+      return state.set("state", STATE_CLOSING);
+
+    case types.SOCKET_SET_CLOSED:
+      return state.set("state", STATE_CLOSED);
+
+    case types.SOCKET_SET_ERROR:
+      console.log("Socket error");
+      return state.set("state", state.socket.readyState);
+
+    case types.LOGIN_GET_STATUS:
+      sendRequest(ControlRequest.loginStatus());
+      return state;
+
+    case types.ROOM_GET_LIST:
+      sendRequest(ControlRequest.roomList());
+      return state;
+
+    case types.ROOM_JOIN:
+      sendRequest(ControlRequest.roomJoin(payload));
+      return state;
+
+    case types.ROOM_LEAVE:
+      sendRequest(ControlRequest.roomLeave(payload));
+      return state;
+
+    case types.ROOM_MESSAGE: {
+      const { room_name, message } = payload;
+      sendRequest(ControlRequest.roomMessage(room_name, message));
+      return state;
+    }
+
+    case types.USER_GET_LIST:
+      sendRequest(ControlRequest.userList());
+      return state;
+
+    default:
+      return state;
+  }
 };
diff --git a/src/reducers/users.js b/src/reducers/users.js
index 550ecd5..5887a31 100644
--- a/src/reducers/users.js
+++ b/src/reducers/users.js
@@ -5,49 +5,47 @@ import OrderedMap from "../utils/OrderedMap";
 import { SOCKET_RECEIVE_MESSAGE } from "../constants/ActionTypes";
 
 const UserRecord = Immutable.Record({
-    status:       "",
-    averageSpeed: 0,
-    numDownloads: 0,
-    numFiles:     0,
-    numFolders:   0,
-    numFreeSlots: 0,
-    country:      ""
+  status: "",
+  averageSpeed: 0,
+  numDownloads: 0,
+  numFiles: 0,
+  numFolders: 0,
+  numFreeSlots: 0,
+  country: "",
 });
 
 const initialState = OrderedMap();
 
 const reduceUsersReceiveMessage = (users, message) => {
-    switch (message.variant) {
-        case "UserListResponse":
-            return users.updateAll(message.data.user_list,
-                (newUser, oldUser) => {
-                    if (!oldUser) {
-                        oldUser = UserRecord();
-                    }
-                    return oldUser
-                        .set("status",       newUser.status)
-                        .set("averageSpeed", newUser.average_speed)
-                        .set("numDownloads", newUser.num_downloads)
-                        .set("numFiles",     newUser.num_files)
-                        .set("numFolders",   newUser.num_folders)
-                        .set("numFreeSlots", newUser.num_free_slots)
-                        .set("country",      newUser.country);
-                }
-            );
-
-        default:
-            return users;
-    }
+  switch (message.variant) {
+    case "UserListResponse":
+      return users.updateAll(message.data.user_list, (newUser, oldUser) => {
+        if (!oldUser) {
+          oldUser = UserRecord();
+        }
+        return oldUser
+          .set("status", newUser.status)
+          .set("averageSpeed", newUser.average_speed)
+          .set("numDownloads", newUser.num_downloads)
+          .set("numFiles", newUser.num_files)
+          .set("numFolders", newUser.num_folders)
+          .set("numFreeSlots", newUser.num_free_slots)
+          .set("country", newUser.country);
+      });
+
+    default:
+      return users;
+  }
 };
 
 const reduceUsers = (users = initialState, action) => {
-    switch (action.type) {
-        case SOCKET_RECEIVE_MESSAGE:
-            return reduceUsersReceiveMessage(users, action.payload);
+  switch (action.type) {
+    case SOCKET_RECEIVE_MESSAGE:
+      return reduceUsersReceiveMessage(users, action.payload);
 
-        default:
-            return users;
-    }
+    default:
+      return users;
+  }
 };
 
 export default reduceUsers;
diff --git a/src/setupTests.ts b/src/setupTests.ts
index 74b1a27..5fdf001 100644
--- a/src/setupTests.ts
+++ b/src/setupTests.ts
@@ -2,4 +2,4 @@
 // allows you to do things like:
 // expect(element).toHaveTextContent(/react/i)
 // learn more: https://github.com/testing-library/jest-dom
-import '@testing-library/jest-dom/extend-expect';
+import "@testing-library/jest-dom/extend-expect";
diff --git a/src/styles/styles.scss b/src/styles/styles.scss
index b9c1a7c..5577348 100644
--- a/src/styles/styles.scss
+++ b/src/styles/styles.scss
@@ -1,236 +1,238 @@
 /* Styles */
 body {
-    font: 14px 'Helvetica Neue', Helvetica, Arial, sans-serif;
-    line-height: 1.4em;
-    -webkit-font-smoothing: antialiased;
-    -moz-font-smoothing: antialiased;
-    font-smoothing: antialiased;
-    font-weight: 300;
-    padding: 0 !important;
-    margin: 0 !important;
-    height: 100%;
+  font: 14px "Helvetica Neue", Helvetica, Arial, sans-serif;
+  line-height: 1.4em;
+  -webkit-font-smoothing: antialiased;
+  -moz-font-smoothing: antialiased;
+  font-smoothing: antialiased;
+  font-weight: 300;
+  padding: 0 !important;
+  margin: 0 !important;
+  height: 100%;
 }
 
 html {
-    padding: 0;
-    margin: 0;
-    height: 100vh;
+  padding: 0;
+  margin: 0;
+  height: 100vh;
 }
 
-#app, #solstice-app {
-    height: 100%;
-    margin: 0;
-    padding: 0;
+#app,
+#solstice-app {
+  height: 100%;
+  margin: 0;
+  padding: 0;
 }
 
 #solstice-app {
-    display: flex;
-    flex-flow: column;
-    justify-content: center;
-    align-items: center;
+  display: flex;
+  flex-flow: column;
+  justify-content: center;
+  align-items: center;
 }
 
 header {
-    margin: 0;
-    padding: 1.5em 2em;
-    display: flex;
-    flex-flow: row;
-    justify-content: space-around;
-    width: 100%;
+  margin: 0;
+  padding: 1.5em 2em;
+  display: flex;
+  flex-flow: row;
+  justify-content: space-around;
+  width: 100%;
 }
 
 header h1 {
-    margin: 0;
+  margin: 0;
 }
 
 footer {
-    display: flex;
-    padding: 0.5em;
-    width: 100%;
-    box-sizing: border-box;
+  display: flex;
+  padding: 0.5em;
+  width: 100%;
+  box-sizing: border-box;
 }
 
 main {
-    width: 100%;
-    height: 85%;
-    margin: 0;
-    padding: 0;
+  width: 100%;
+  height: 85%;
+  margin: 0;
+  padding: 0;
 }
 
 #rooms-pane {
-    display: flex;
-    border: solid grey 0.1em;
-    height: 100%;
+  display: flex;
+  border: solid grey 0.1em;
+  height: 100%;
 }
 
 #room-chat {
-    border: solid grey 0.1em;
+  border: solid grey 0.1em;
 }
 
 #room-list {
-    flex: 1;
-    display: flex;
-    flex-flow: column;
-    border: solid grey 0.1em;
-    height: 100%;
+  flex: 1;
+  display: flex;
+  flex-flow: column;
+  border: solid grey 0.1em;
+  height: 100%;
 }
 
 #room-selected-pane {
-    height: 100%;
-    flex: 3;
-    display: flex;
-    flex-flow: row;
+  height: 100%;
+  flex: 3;
+  display: flex;
+  flex-flow: row;
 }
 
 #room-chat {
-    height: 100%;
-    max-width: 100%;
-    flex: 2;
-    display: flex;
-    flex-flow: column;
-    justify-content: space-between;
+  height: 100%;
+  max-width: 100%;
+  flex: 2;
+  display: flex;
+  flex-flow: column;
+  justify-content: space-between;
 }
 
 #room-user-list {
-    flex: 1;
-    display: block;
-    list-style: none;
-    margin: 0;
-    padding: 1em;
+  flex: 1;
+  display: block;
+  list-style: none;
+  margin: 0;
+  padding: 1em;
 }
 
 #room-chat-header {
-    flex: 1;
-    padding: 0.8em;
-    border: solid grey 0.1em;
+  flex: 1;
+  padding: 0.8em;
+  border: solid grey 0.1em;
 
-    display: flex;
-    flex-flow: row;
-    justify-content: space-between;
-    align-items: center;
+  display: flex;
+  flex-flow: row;
+  justify-content: space-between;
+  align-items: center;
 }
 
 #room-chat-header-title {
-    font-size: 1.3em;
-    text-align: center;
-    flex: 1;
+  font-size: 1.3em;
+  text-align: center;
+  flex: 1;
 }
 
 #room-chat-header > button {
-    padding: 0.5em 1em;
+  padding: 0.5em 1em;
 }
 
 #room-chat-message-list {
-    display: block;
-    height: 83%;
-    width: 100%;
-    box-sizing: border-box;
-    margin: 0;
-    padding: 1em;
+  display: block;
+  height: 83%;
+  width: 100%;
+  box-sizing: border-box;
+  margin: 0;
+  padding: 1em;
 
-    overflow: auto;
+  overflow: auto;
 
-    list-style: none;
+  list-style: none;
 }
 
 .room-chat-message {
-    display: flex;
-    flex-flow: column;
-    align-items: flex-start;
-    margin-right: 3em;
+  display: flex;
+  flex-flow: column;
+  align-items: flex-start;
+  margin-right: 3em;
 }
 
 .room-chat-message-me {
-    align-items: flex-end;
-    margin-left: 3em;
-    margin-right: 0;
+  align-items: flex-end;
+  margin-left: 3em;
+  margin-right: 0;
 }
 
 .room-chat-message-user {
-    font-weight: bold;
-    color: blue;
+  font-weight: bold;
+  color: blue;
 }
 
 .room-chat-message-text {
-    padding: 0.5em 0.7em;
-    margin: 0.2em 0.5em;
-    border-radius: 0.8em;
-    background-color: lightgrey;
+  padding: 0.5em 0.7em;
+  margin: 0.2em 0.5em;
+  border-radius: 0.8em;
+  background-color: lightgrey;
 }
 
 .room-chat-message-me > .room-chat-message-text {
-    background-color: blue;
-    color: white;
+  background-color: blue;
+  color: white;
 }
 
 #room-chat-form {
-    width: 100%;
-    border: solid grey 0.1em;
+  width: 100%;
+  border: solid grey 0.1em;
 }
 
 #room-chat-form form {
-    width: 100%;
-    display: flex;
-    flex-flow: row;
+  width: 100%;
+  display: flex;
+  flex-flow: row;
 }
 
 #room-chat-form input {
-    flex: 1;
-    padding: 0.8em;
+  flex: 1;
+  padding: 0.8em;
 }
 
 #room-list-header {
-    flex: 1;
-    display: flex;
-    flex-flow: row;
-    border: solid grey 0.1em;
+  flex: 1;
+  display: flex;
+  flex-flow: row;
+  border: solid grey 0.1em;
 }
 
 #room-list-header > div {
-    flex: 1;
-    border: solid grey 0.1em;
+  flex: 1;
+  border: solid grey 0.1em;
 }
 
 #room-list ul {
-    display: block;
-    list-style: none;
-    padding: 0;
-    margin: 0;
-    height: 84%;
-    overflow-y: auto;
+  display: block;
+  list-style: none;
+  padding: 0;
+  margin: 0;
+  height: 84%;
+  overflow-y: auto;
 }
 
 .room {
-    display: flex;
-    justify-content: space-between;
-    color: inherit;
-    text-decoration: inherit;
-    padding: .5em 1em;
-    border: solid grey 0.1em;
+  display: flex;
+  justify-content: space-between;
+  color: inherit;
+  text-decoration: inherit;
+  padding: 0.5em 1em;
+  border: solid grey 0.1em;
 }
 
 .room:hover {
-    background: lightgrey;
+  background: lightgrey;
 }
 
 .room:active {
-    background: grey;
+  background: grey;
 }
 
 .room-joined {
-    background: lightgreen;
+  background: lightgreen;
 }
 
 .room-selected {
-    background: lightblue;
+  background: lightblue;
 }
 
-#login-status-pane, #socket-status-pane {
-    flex: 1;
+#login-status-pane,
+#socket-status-pane {
+  flex: 1;
 }
 
 #connect-form {
-    display: flex;
-    flex-flow: column;
-    align-items: center;
+  display: flex;
+  flex-flow: column;
+  align-items: center;
 }
diff --git a/src/utils/ControlRequest.js b/src/utils/ControlRequest.js
index cd84558..425663c 100644
--- a/src/utils/ControlRequest.js
+++ b/src/utils/ControlRequest.js
@@ -1,34 +1,36 @@
 export default {
-    loginStatus: () => ({
-        variant: "LoginStatusRequest",
-        fields: []
-    }),
+  loginStatus: () => ({
+    variant: "LoginStatusRequest",
+    fields: [],
+  }),
 
-    roomJoin: (room_name) => ({
-        variant: "RoomJoinRequest",
-        fields: [room_name]
-    }),
+  roomJoin: (room_name) => ({
+    variant: "RoomJoinRequest",
+    fields: [room_name],
+  }),
 
-    roomLeave: (room_name) => ({
-        variant: "RoomLeaveRequest",
-        fields: [room_name]
-    }),
+  roomLeave: (room_name) => ({
+    variant: "RoomLeaveRequest",
+    fields: [room_name],
+  }),
 
-    roomList: () => ({
-        variant: "RoomListRequest",
-        fields: []
-    }),
+  roomList: () => ({
+    variant: "RoomListRequest",
+    fields: [],
+  }),
 
-    roomMessage: (room_name, message) => ({
-        variant: "RoomMessageRequest",
-        fields: [{
-            room_name,
-            message
-        }]
-    }),
+  roomMessage: (room_name, message) => ({
+    variant: "RoomMessageRequest",
+    fields: [
+      {
+        room_name,
+        message,
+      },
+    ],
+  }),
 
-    userList: () =>({
-        variant: "UserListRequest",
-        fields: []
-    })
+  userList: () => ({
+    variant: "UserListRequest",
+    fields: [],
+  }),
 };
diff --git a/src/utils/OrderedMap.js b/src/utils/OrderedMap.js
index 54dc95c..8ba7311 100644
--- a/src/utils/OrderedMap.js
+++ b/src/utils/OrderedMap.js
@@ -5,80 +5,80 @@ import md5 from "md5";
 const UPDATE_INTERVAL_MS = 5 * 60 * 1000;
 
 const MapRecord = Immutable.Record({
-    byName:      Immutable.OrderedMap(),
-    byHash:      Immutable.Map(),
-    lastUpdated: 0
+  byName: Immutable.OrderedMap(),
+  byHash: Immutable.Map(),
+  lastUpdated: 0,
 });
 
 // TODO: use a regular map and a reversible name -> hash encoding (e.g. base64).
 // This would entirely remove the need for this complicated logic.
 class OrderedMap extends MapRecord {
-    constructor(arg) {
-        super(arg);
-    }
+  constructor(arg) {
+    super(arg);
+  }
 
-    getByName(name) {
-        return this.getIn(["byName", name]);
-    }
+  getByName(name) {
+    return this.getIn(["byName", name]);
+  }
 
-    setByName(name, data) {
-        let thisModified = this;
-        if (!this.getByName(name)) {
-            // That key was not there yet, add hash -> name mapping.
-            thisModified = this.setIn(["byHash", md5(name)], name);
-        }
-        // Add data to map.
-        return thisModified.setIn(["byName", name], data);
+  setByName(name, data) {
+    let thisModified = this;
+    if (!this.getByName(name)) {
+      // That key was not there yet, add hash -> name mapping.
+      thisModified = this.setIn(["byHash", md5(name)], name);
     }
+    // Add data to map.
+    return thisModified.setIn(["byName", name], data);
+  }
 
-    updateByName(name, updater) {
-        return this.updateIn(["byName", name], updater);
-    }
+  updateByName(name, updater) {
+    return this.updateIn(["byName", name], updater);
+  }
 
-    getNameByHash(hash) {
-        return this.getIn(["byHash", hash]);
-    }
+  getNameByHash(hash) {
+    return this.getIn(["byHash", hash]);
+  }
 
-    updateAll(nameAndDataList, merger) {
-        const { byName } = this;
-        let { byHash } = this;
+  updateAll(nameAndDataList, merger) {
+    const { byName } = this;
+    let { byHash } = this;
 
-        // First sort the room list by room name
-        nameAndDataList.sort(([ name1 ], [ name2 ]) => {
-            if (name1 < name2) {
-                return -1;
-            } else if (name1 > name2) {
-                return 1;
-            }
-            return 0;
-        });
+    // First sort the room list by room name
+    nameAndDataList.sort(([name1], [name2]) => {
+      if (name1 < name2) {
+        return -1;
+      } else if (name1 > name2) {
+        return 1;
+      }
+      return 0;
+    });
 
-        // Then build the new map.
-        let newByName = Immutable.OrderedMap();
+    // Then build the new map.
+    let newByName = Immutable.OrderedMap();
 
-        for (const [ name, newData ] of nameAndDataList) {
-            // Get the old room data.
-            let data = byName.get(name);
-            if (!data) {
-                // Add the hash -> name mapping.
-                byHash = byHash.set(md5(name), name);
-            }
-            // Merge the old data and the new data using the provided function.
-            const mergedData = merger(newData, data);
-            // Insert that in the new room map.
-            newByName = newByName.set(name, mergedData);
-        }
-
-        return new OrderedMap({
-            byName: newByName,
-            byHash,
-            lastUpdated: Date.now()
-        });
+    for (const [name, newData] of nameAndDataList) {
+      // Get the old room data.
+      let data = byName.get(name);
+      if (!data) {
+        // Add the hash -> name mapping.
+        byHash = byHash.set(md5(name), name);
+      }
+      // Merge the old data and the new data using the provided function.
+      const mergedData = merger(newData, data);
+      // Insert that in the new room map.
+      newByName = newByName.set(name, mergedData);
     }
 
-    shouldUpdate() {
-        return (Date.now() - this.lastUpdated) > UPDATE_INTERVAL_MS;
-    }
+    return new OrderedMap({
+      byName: newByName,
+      byHash,
+      lastUpdated: Date.now(),
+    });
+  }
+
+  shouldUpdate() {
+    return Date.now() - this.lastUpdated > UPDATE_INTERVAL_MS;
+  }
 }
 
 export default () => new OrderedMap();
diff --git a/src/utils/propTypeRequiredWrapper.js b/src/utils/propTypeRequiredWrapper.js
index c53f837..c7e14fb 100644
--- a/src/utils/propTypeRequiredWrapper.js
+++ b/src/utils/propTypeRequiredWrapper.js
@@ -1,17 +1,16 @@
-const checkRequiredThenValidate = (validator) =>
-    (props, propName, componentName, location) =>
-{
+const checkRequiredThenValidate =
+  (validator) => (props, propName, componentName, location) => {
     if (props[propName] != null) {
-        return validator(props, propName, componentName, location);
+      return validator(props, propName, componentName, location);
     }
 
     return new Error(
-        `Required prop \`${propName}\` was not specified in ` +
+      `Required prop \`${propName}\` was not specified in ` +
         `\`${componentName}\`.`
     );
-};
+  };
 
 export default (validator) => {
-    validator.isRequired = checkRequiredThenValidate(validator);
-    return validator;
+  validator.isRequired = checkRequiredThenValidate(validator);
+  return validator;
 };
diff --git a/src/utils/propTypeSymbol.js b/src/utils/propTypeSymbol.js
index 7c39ffa..c14d3d4 100644
--- a/src/utils/propTypeSymbol.js
+++ b/src/utils/propTypeSymbol.js
@@ -2,19 +2,18 @@ import propTypeRequiredWrapper from "./propTypeRequiredWrapper";
 
 // Simple validator for Symbols (instanceof does not work on symbols).
 function propTypeSymbol(props, propName, componentName) {
-    const prop = props[propName];
-    if (prop === null) {
-        return;
-    }
-    const type = typeof prop;
-    if (type === "symbol") {
-        return;
-    }
-    return new Error(
-        `Invalid prop \`${propName}\` of type \`${type}\` ` +
-        `supplied to \`${componentName}\`, expected \`symbol\``
-    );
+  const prop = props[propName];
+  if (prop === null) {
+    return;
+  }
+  const type = typeof prop;
+  if (type === "symbol") {
+    return;
+  }
+  return new Error(
+    `Invalid prop \`${propName}\` of type \`${type}\` ` +
+      `supplied to \`${componentName}\`, expected \`symbol\``
+  );
 }
 
 export default propTypeRequiredWrapper(propTypeSymbol);
-