From ec75d3a4b62d0f4b8d52a739a7727142421cc261 Mon Sep 17 00:00:00 2001
From: Nathan Bierema <nbierema@gmail.com>
Date: Thu, 10 Sep 2020 11:45:02 -0400
Subject: [PATCH] feat(redux-devtools-slider-monitor): convert example to
 TypeScript (#632)

---
 package.json                                  |  1 +
 .../examples/todomvc/.babelrc                 |  6 +-
 .../examples/todomvc/.eslintrc.js             | 21 +++++
 .../examples/todomvc/actions/TodoActions.js   | 42 ----------
 .../examples/todomvc/actions/TodoActions.ts   | 82 +++++++++++++++++++
 .../components/{Footer.js => Footer.tsx}      | 23 ++++--
 .../components/{Header.js => Header.tsx}      |  8 +-
 .../{MainSection.js => MainSection.tsx}       | 46 +++++++----
 .../components/{TodoItem.js => TodoItem.tsx}  | 28 +++++--
 .../{TodoTextInput.js => TodoTextInput.tsx}   | 38 ++++++---
 .../{ActionTypes.js => ActionTypes.ts}        |  0
 .../{TodoFilters.js => TodoFilters.ts}        |  5 ++
 .../containers/{DevTools.js => DevTools.tsx}  |  2 +-
 .../containers/{Root.dev.js => Root.dev.tsx}  | 11 ++-
 .../examples/todomvc/containers/Root.js       |  6 --
 .../examples/todomvc/containers/Root.prod.js  | 19 -----
 .../examples/todomvc/containers/Root.prod.tsx | 26 ++++++
 .../examples/todomvc/containers/Root.ts       | 15 ++++
 .../examples/todomvc/containers/TodoApp.js    | 33 --------
 .../examples/todomvc/containers/TodoApp.tsx   | 45 ++++++++++
 .../examples/todomvc/index.js                 | 23 ------
 .../examples/todomvc/index.tsx                | 29 +++++++
 .../examples/todomvc/package.json             | 26 ++++--
 .../todomvc/reducers/{index.js => index.ts}   |  6 +-
 .../todomvc/reducers/{todos.js => todos.ts}   | 13 ++-
 .../todomvc/store/configureStore.dev.js       | 19 -----
 .../todomvc/store/configureStore.dev.ts       | 26 ++++++
 .../examples/todomvc/store/configureStore.js  |  6 --
 .../todomvc/store/configureStore.prod.js      |  6 --
 .../todomvc/store/configureStore.prod.ts      |  8 ++
 .../examples/todomvc/store/configureStore.ts  | 13 +++
 .../examples/todomvc/tsconfig.json            |  4 +
 .../examples/todomvc/tsconfig.webpack.json    |  4 +
 .../examples/todomvc/webpack.config.prod.js   |  8 --
 .../{webpack.config.js => webpack.config.ts}  | 30 ++++---
 .../examples/todomvc/containers/Root.ts       |  2 +-
 .../examples/todomvc/package.json             |  3 +-
 37 files changed, 444 insertions(+), 239 deletions(-)
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/.eslintrc.js
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.js
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.ts
 rename packages/redux-devtools-slider-monitor/examples/todomvc/components/{Footer.js => Footer.tsx} (74%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/components/{Header.js => Header.tsx} (77%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/components/{MainSection.js => MainSection.tsx} (67%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/components/{TodoItem.js => TodoItem.tsx} (76%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/components/{TodoTextInput.js => TodoTextInput.tsx} (62%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/constants/{ActionTypes.js => ActionTypes.ts} (100%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/constants/{TodoFilters.js => TodoFilters.ts} (56%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/containers/{DevTools.js => DevTools.tsx} (81%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/containers/{Root.dev.js => Root.dev.tsx} (56%)
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.js
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.js
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.tsx
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.ts
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.js
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.tsx
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/index.js
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/index.tsx
 rename packages/redux-devtools-slider-monitor/examples/todomvc/reducers/{index.js => index.ts} (58%)
 rename packages/redux-devtools-slider-monitor/examples/todomvc/reducers/{todos.js => todos.ts} (77%)
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.js
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.ts
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.js
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.js
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.ts
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.ts
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.json
 create mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.webpack.json
 delete mode 100644 packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.prod.js
 rename packages/redux-devtools-slider-monitor/examples/todomvc/{webpack.config.js => webpack.config.ts} (75%)

diff --git a/package.json b/package.json
index c21a3c04..730f78de 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,7 @@
     "@types/node": "^14.6.0",
     "@types/webpack": "^4.41.21",
     "@types/webpack-dev-server": "^3.11.0",
+    "@types/webpack-env": "^1.15.2",
     "@typescript-eslint/eslint-plugin": "^3.9.0",
     "@typescript-eslint/parser": "^3.9.0",
     "babel-eslint": "^10.1.0",
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/.babelrc b/packages/redux-devtools-slider-monitor/examples/todomvc/.babelrc
index 3d0797a7..a01c7adc 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/.babelrc
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/.babelrc
@@ -1,5 +1,9 @@
 {
-  "presets": ["@babel/preset-env", "@babel/preset-react"],
+  "presets": [
+    "@babel/preset-env",
+    "@babel/preset-react",
+    "@babel/preset-typescript"
+  ],
   "plugins": [
     "@babel/plugin-proposal-class-properties",
     "react-hot-loader/babel"
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/.eslintrc.js b/packages/redux-devtools-slider-monitor/examples/todomvc/.eslintrc.js
new file mode 100644
index 00000000..70e1445e
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/.eslintrc.js
@@ -0,0 +1,21 @@
+module.exports = {
+  extends: '../../../../.eslintrc',
+  overrides: [
+    {
+      files: ['*.ts', '*.tsx'],
+      extends: '../../../../eslintrc.ts.react.base.json',
+      parserOptions: {
+        tsconfigRootDir: __dirname,
+        project: ['./tsconfig.json'],
+      },
+    },
+    {
+      files: ['webpack.config.ts'],
+      extends: '../../../../eslintrc.ts.base.json',
+      parserOptions: {
+        tsconfigRootDir: __dirname,
+        project: ['./tsconfig.webpack.json'],
+      },
+    },
+  ],
+};
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.js b/packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.js
deleted file mode 100644
index f0122846..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.js
+++ /dev/null
@@ -1,42 +0,0 @@
-import * as types from '../constants/ActionTypes';
-
-export function addTodo(text) {
-  return {
-    type: types.ADD_TODO,
-    text,
-  };
-}
-
-export function deleteTodo(id) {
-  return {
-    type: types.DELETE_TODO,
-    id,
-  };
-}
-
-export function editTodo(id, text) {
-  return {
-    type: types.EDIT_TODO,
-    id,
-    text,
-  };
-}
-
-export function markTodo(id) {
-  return {
-    type: types.MARK_TODO,
-    id,
-  };
-}
-
-export function markAll() {
-  return {
-    type: types.MARK_ALL,
-  };
-}
-
-export function clearMarked() {
-  return {
-    type: types.CLEAR_MARKED,
-  };
-}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.ts b/packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.ts
new file mode 100644
index 00000000..4169e9c1
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/actions/TodoActions.ts
@@ -0,0 +1,82 @@
+import * as types from '../constants/ActionTypes';
+
+interface AddTodoAction {
+  type: typeof types.ADD_TODO;
+  text: string;
+}
+export function addTodo(text: string): AddTodoAction {
+  return {
+    type: types.ADD_TODO,
+    text,
+  };
+}
+
+interface DeleteTodoAction {
+  type: typeof types.DELETE_TODO;
+  id: number;
+}
+export function deleteTodo(id: number): DeleteTodoAction {
+  return {
+    type: types.DELETE_TODO,
+    id,
+  };
+}
+
+interface EditTodoAction {
+  type: typeof types.EDIT_TODO;
+  id: number;
+  text: string;
+}
+export function editTodo(id: number, text: string): EditTodoAction {
+  return {
+    type: types.EDIT_TODO,
+    id,
+    text,
+  };
+}
+
+interface MarkTodoAction {
+  type: typeof types.MARK_TODO;
+  id: number;
+}
+export function markTodo(id: number): MarkTodoAction {
+  return {
+    type: types.MARK_TODO,
+    id,
+  };
+}
+
+interface MarkAllAction {
+  type: typeof types.MARK_ALL;
+}
+export function markAll(): MarkAllAction {
+  return {
+    type: types.MARK_ALL,
+  };
+}
+
+interface ClearMarkedAction {
+  type: typeof types.CLEAR_MARKED;
+}
+export function clearMarked(): ClearMarkedAction {
+  return {
+    type: types.CLEAR_MARKED,
+  };
+}
+
+export type TodoAction =
+  | AddTodoAction
+  | DeleteTodoAction
+  | EditTodoAction
+  | MarkTodoAction
+  | MarkAllAction
+  | ClearMarkedAction;
+
+export interface TodoActions {
+  addTodo(text: string): AddTodoAction;
+  deleteTodo(id: number): DeleteTodoAction;
+  editTodo(id: number, text: string): EditTodoAction;
+  markTodo(id: number): MarkTodoAction;
+  markAll(): MarkAllAction;
+  clearMarked(): ClearMarkedAction;
+}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/components/Footer.js b/packages/redux-devtools-slider-monitor/examples/todomvc/components/Footer.tsx
similarity index 74%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/components/Footer.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/components/Footer.tsx
index f583f39e..9462dd0c 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/components/Footer.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/components/Footer.tsx
@@ -1,7 +1,12 @@
-import React, { Component } from 'react';
+import React, { Component, MouseEventHandler } from 'react';
 import PropTypes from 'prop-types';
 import classnames from 'classnames';
-import { SHOW_ALL, SHOW_MARKED, SHOW_UNMARKED } from '../constants/TodoFilters';
+import {
+  SHOW_ALL,
+  SHOW_MARKED,
+  SHOW_UNMARKED,
+  TodoFilter,
+} from '../constants/TodoFilters';
 
 const FILTER_TITLES = {
   [SHOW_ALL]: 'All',
@@ -9,7 +14,15 @@ const FILTER_TITLES = {
   [SHOW_MARKED]: 'Completed',
 };
 
-export default class Footer extends Component {
+interface Props {
+  markedCount: number;
+  unmarkedCount: number;
+  filter: TodoFilter;
+  onClearMarked: MouseEventHandler<HTMLButtonElement>;
+  onShow: (filter: TodoFilter) => void;
+}
+
+export default class Footer extends Component<Props> {
   static propTypes = {
     markedCount: PropTypes.number.isRequired,
     unmarkedCount: PropTypes.number.isRequired,
@@ -23,7 +36,7 @@ export default class Footer extends Component {
       <footer className="footer">
         {this.renderTodoCount()}
         <ul className="filters">
-          {[SHOW_ALL, SHOW_UNMARKED, SHOW_MARKED].map((filter) => (
+          {([SHOW_ALL, SHOW_UNMARKED, SHOW_MARKED] as const).map((filter) => (
             <li key={filter}>{this.renderFilterLink(filter)}</li>
           ))}
         </ul>
@@ -43,7 +56,7 @@ export default class Footer extends Component {
     );
   }
 
-  renderFilterLink(filter) {
+  renderFilterLink(filter: TodoFilter) {
     const title = FILTER_TITLES[filter];
     const { filter: selectedFilter, onShow } = this.props;
 
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/components/Header.js b/packages/redux-devtools-slider-monitor/examples/todomvc/components/Header.tsx
similarity index 77%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/components/Header.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/components/Header.tsx
index 79c6512f..da35a7af 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/components/Header.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/components/Header.tsx
@@ -2,12 +2,16 @@ import React, { Component } from 'react';
 import PropTypes from 'prop-types';
 import TodoTextInput from './TodoTextInput';
 
-export default class Header extends Component {
+interface Props {
+  addTodo: (text: string) => void;
+}
+
+export default class Header extends Component<Props> {
   static propTypes = {
     addTodo: PropTypes.func.isRequired,
   };
 
-  handleSave = (text) => {
+  handleSave = (text: string) => {
     if (text.length !== 0) {
       this.props.addTodo(text);
     }
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/components/MainSection.js b/packages/redux-devtools-slider-monitor/examples/todomvc/components/MainSection.tsx
similarity index 67%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/components/MainSection.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/components/MainSection.tsx
index 4e470737..84cfa518 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/components/MainSection.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/components/MainSection.tsx
@@ -1,38 +1,49 @@
-import React, { Component } from 'react';
+import React, { Component, MouseEventHandler } from 'react';
 import PropTypes from 'prop-types';
 import TodoItem from './TodoItem';
 import Footer from './Footer';
-import { SHOW_ALL, SHOW_MARKED, SHOW_UNMARKED } from '../constants/TodoFilters';
+import {
+  SHOW_ALL,
+  SHOW_MARKED,
+  SHOW_UNMARKED,
+  TodoFilter,
+} from '../constants/TodoFilters';
+import { Todo } from '../reducers/todos';
+import { TodoActions } from '../actions/TodoActions';
 
 const TODO_FILTERS = {
   [SHOW_ALL]: () => true,
-  [SHOW_UNMARKED]: (todo) => !todo.marked,
-  [SHOW_MARKED]: (todo) => todo.marked,
+  [SHOW_UNMARKED]: (todo: Todo) => !todo.marked,
+  [SHOW_MARKED]: (todo: Todo) => todo.marked,
 };
 
-export default class MainSection extends Component {
+interface State {
+  filter: TodoFilter;
+}
+
+interface Props {
+  todos: Todo[];
+  actions: TodoActions;
+}
+
+export default class MainSection extends Component<Props, State> {
   static propTypes = {
     todos: PropTypes.array.isRequired,
     actions: PropTypes.object.isRequired,
   };
 
-  constructor(props, context) {
-    super(props, context);
-    this.handleClearMarked = this.handleClearMarked.bind(this);
-    this.handleShow = this.handleShow.bind(this);
-    this.state = { filter: SHOW_ALL };
-  }
+  state: State = { filter: SHOW_ALL };
 
-  handleClearMarked() {
+  handleClearMarked: MouseEventHandler<HTMLButtonElement> = () => {
     const atLeastOneMarked = this.props.todos.some((todo) => todo.marked);
     if (atLeastOneMarked) {
       this.props.actions.clearMarked();
     }
-  }
+  };
 
-  handleShow(filter) {
+  handleShow = (filter: TodoFilter) => {
     this.setState({ filter });
-  }
+  };
 
   render() {
     const { todos, actions } = this.props;
@@ -57,7 +68,7 @@ export default class MainSection extends Component {
     );
   }
 
-  renderToggleAll(markedCount) {
+  renderToggleAll(markedCount: number) {
     const { todos, actions } = this.props;
     if (todos.length > 0) {
       return (
@@ -65,6 +76,7 @@ export default class MainSection extends Component {
           className="toggle-all"
           type="checkbox"
           checked={markedCount === todos.length}
+          // eslint-disable-next-line @typescript-eslint/unbound-method
           onChange={actions.markAll}
         />
       );
@@ -72,7 +84,7 @@ export default class MainSection extends Component {
     return null;
   }
 
-  renderFooter(markedCount) {
+  renderFooter(markedCount: number) {
     const { todos } = this.props;
     const { filter } = this.state;
     const unmarkedCount = todos.length - markedCount;
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoItem.js b/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoItem.tsx
similarity index 76%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoItem.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoItem.tsx
index d7730344..ee377964 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoItem.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoItem.tsx
@@ -2,8 +2,23 @@ import React, { Component } from 'react';
 import PropTypes from 'prop-types';
 import classnames from 'classnames';
 import TodoTextInput from './TodoTextInput';
+import { Todo } from '../reducers/todos';
 
-export default class TodoItem extends Component {
+interface State {
+  editing: boolean;
+}
+
+interface Props {
+  todo: Todo;
+  addTodo: (text: string) => void;
+  deleteTodo: (id: number) => void;
+  editTodo: (id: number, text: string) => void;
+  markTodo: (id: number) => void;
+  markAll: () => void;
+  clearMarked: () => void;
+}
+
+export default class TodoItem extends Component<Props, State> {
   static propTypes = {
     todo: PropTypes.object.isRequired,
     editTodo: PropTypes.func.isRequired,
@@ -11,18 +26,15 @@ export default class TodoItem extends Component {
     markTodo: PropTypes.func.isRequired,
   };
 
-  constructor(props, context) {
-    super(props, context);
-    this.state = {
-      editing: false,
-    };
-  }
+  state: State = {
+    editing: false,
+  };
 
   handleDoubleClick = () => {
     this.setState({ editing: true });
   };
 
-  handleSave = (id, text) => {
+  handleSave = (id: number, text: string) => {
     if (text.length === 0) {
       this.props.deleteTodo(id);
     } else {
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoTextInput.js b/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoTextInput.tsx
similarity index 62%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoTextInput.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoTextInput.tsx
index 354e292b..0427662d 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoTextInput.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/components/TodoTextInput.tsx
@@ -1,8 +1,25 @@
-import React, { Component } from 'react';
+import React, {
+  ChangeEventHandler,
+  Component,
+  FocusEventHandler,
+  KeyboardEventHandler,
+} from 'react';
 import PropTypes from 'prop-types';
 import classnames from 'classnames';
 
-export default class TodoTextInput extends Component {
+interface State {
+  text: string;
+}
+
+interface Props {
+  onSave: (text: string) => void;
+  text?: string;
+  placeholder?: string;
+  editing?: boolean;
+  newTodo?: boolean;
+}
+
+export default class TodoTextInput extends Component<Props, State> {
   static propTypes = {
     onSave: PropTypes.func.isRequired,
     text: PropTypes.string,
@@ -18,15 +35,12 @@ export default class TodoTextInput extends Component {
     newTodo: false,
   };
 
-  constructor(props, context) {
-    super(props, context);
-    this.state = {
-      text: this.props.text || '',
-    };
-  }
+  state = {
+    text: this.props.text || '',
+  };
 
-  handleSubmit = (e) => {
-    const text = e.target.value.trim();
+  handleSubmit: KeyboardEventHandler<HTMLInputElement> = (e) => {
+    const text = e.currentTarget.value.trim();
     if (e.which === 13) {
       this.props.onSave(text);
       if (this.props.newTodo) {
@@ -35,11 +49,11 @@ export default class TodoTextInput extends Component {
     }
   };
 
-  handleChange = (e) => {
+  handleChange: ChangeEventHandler<HTMLInputElement> = (e) => {
     this.setState({ text: e.target.value });
   };
 
-  handleBlur = (e) => {
+  handleBlur: FocusEventHandler<HTMLInputElement> = (e) => {
     if (!this.props.newTodo) {
       this.props.onSave(e.target.value);
     }
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/constants/ActionTypes.js b/packages/redux-devtools-slider-monitor/examples/todomvc/constants/ActionTypes.ts
similarity index 100%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/constants/ActionTypes.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/constants/ActionTypes.ts
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/constants/TodoFilters.js b/packages/redux-devtools-slider-monitor/examples/todomvc/constants/TodoFilters.ts
similarity index 56%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/constants/TodoFilters.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/constants/TodoFilters.ts
index 99d05d40..f814c76b 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/constants/TodoFilters.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/constants/TodoFilters.ts
@@ -1,3 +1,8 @@
 export const SHOW_ALL = 'show_all';
 export const SHOW_MARKED = 'show_marked';
 export const SHOW_UNMARKED = 'show_unmarked';
+
+export type TodoFilter =
+  | typeof SHOW_ALL
+  | typeof SHOW_MARKED
+  | typeof SHOW_UNMARKED;
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/DevTools.js b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/DevTools.tsx
similarity index 81%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/containers/DevTools.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/containers/DevTools.tsx
index fb16e2dc..1d809b14 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/DevTools.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/DevTools.tsx
@@ -1,7 +1,7 @@
 import React from 'react';
 import { createDevTools } from 'redux-devtools';
 import DockMonitor from 'redux-devtools-dock-monitor';
-import SliderMonitor from 'redux-devtools-slider-monitor'; // eslint-disable-line
+import SliderMonitor from 'redux-devtools-slider-monitor';
 
 export default createDevTools(
   <DockMonitor
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.dev.js b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.dev.tsx
similarity index 56%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.dev.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.dev.tsx
index 48c6641f..569afecf 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.dev.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.dev.tsx
@@ -2,10 +2,17 @@ import { hot } from 'react-hot-loader/root';
 import React from 'react';
 import PropTypes from 'prop-types';
 import { Provider } from 'react-redux';
+import { Store } from 'redux';
 import TodoApp from './TodoApp';
 import DevTools from './DevTools';
+import { TodoState } from '../reducers';
+import { TodoAction } from '../actions/TodoActions';
 
-const Root = ({ store }) => (
+interface Props {
+  store: Store<TodoState, TodoAction>;
+}
+
+const Root: React.FunctionComponent<Props> = ({ store }) => (
   <Provider store={store}>
     <div>
       <TodoApp />
@@ -15,7 +22,7 @@ const Root = ({ store }) => (
 );
 
 Root.propTypes = {
-  store: PropTypes.object.isRequired,
+  store: PropTypes.any.isRequired,
 };
 
 export default hot(Root);
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.js b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.js
deleted file mode 100644
index 6f901a07..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.js
+++ /dev/null
@@ -1,6 +0,0 @@
-/* eslint-disable global-require */
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./Root.prod');
-} else {
-  module.exports = require('./Root.dev');
-}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.js b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.js
deleted file mode 100644
index b9a63c53..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.js
+++ /dev/null
@@ -1,19 +0,0 @@
-import { hot } from 'react-hot-loader/root';
-import React from 'react';
-import PropTypes from 'prop-types';
-import { Provider } from 'react-redux';
-import TodoApp from './TodoApp';
-
-const Root = ({ store }) => (
-  <Provider store={store}>
-    <div>
-      <TodoApp />
-    </div>
-  </Provider>
-);
-
-Root.propTypes = {
-  store: PropTypes.object.isRequired,
-};
-
-export default hot(Root);
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.tsx b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.tsx
new file mode 100644
index 00000000..5665982f
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.prod.tsx
@@ -0,0 +1,26 @@
+import { hot } from 'react-hot-loader/root';
+import React, { FunctionComponent } from 'react';
+import PropTypes from 'prop-types';
+import { Provider } from 'react-redux';
+import TodoApp from './TodoApp';
+import { Store } from 'redux';
+import { TodoState } from '../reducers';
+import { TodoAction } from '../actions/TodoActions';
+
+interface Props {
+  store: Store<TodoState, TodoAction>;
+}
+
+const Root: FunctionComponent<Props> = ({ store }) => (
+  <Provider store={store}>
+    <div>
+      <TodoApp />
+    </div>
+  </Provider>
+);
+
+Root.propTypes = {
+  store: PropTypes.any.isRequired,
+};
+
+export default hot(Root);
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.ts b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.ts
new file mode 100644
index 00000000..15e0f4cc
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/Root.ts
@@ -0,0 +1,15 @@
+import { Store } from 'redux';
+import { ComponentType } from 'react';
+import { TodoState } from '../reducers';
+import { TodoAction } from '../actions/TodoActions';
+
+interface Props {
+  store: Store<TodoState, TodoAction>;
+}
+const Root: ComponentType<Props> =
+  process.env.NODE_ENV === 'production'
+    ? // eslint-disable-next-line @typescript-eslint/no-var-requires
+      require('./Root.prod').default
+    : // eslint-disable-next-line @typescript-eslint/no-var-requires
+      require('./Root.dev').default;
+export default Root;
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.js b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.js
deleted file mode 100644
index 172239ce..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.js
+++ /dev/null
@@ -1,33 +0,0 @@
-import React from 'react';
-import PropTypes from 'prop-types';
-import { connect } from 'react-redux';
-import { bindActionCreators } from 'redux';
-import Header from '../components/Header';
-import MainSection from '../components/MainSection';
-import * as TodoActions from '../actions/TodoActions';
-
-const TodoApp = ({ todos, actions }) => (
-  <div>
-    <Header addTodo={actions.addTodo} />
-    <MainSection todos={todos} actions={actions} />
-  </div>
-);
-
-TodoApp.propTypes = {
-  todos: PropTypes.array.isRequired,
-  actions: PropTypes.object.isRequired,
-};
-
-function mapState(state) {
-  return {
-    todos: state.todos,
-  };
-}
-
-function mapDispatch(dispatch) {
-  return {
-    actions: bindActionCreators(TodoActions, dispatch),
-  };
-}
-
-export default connect(mapState, mapDispatch)(TodoApp);
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.tsx b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.tsx
new file mode 100644
index 00000000..0af67279
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/containers/TodoApp.tsx
@@ -0,0 +1,45 @@
+import React, { FunctionComponent } from 'react';
+import PropTypes from 'prop-types';
+import { connect } from 'react-redux';
+import { bindActionCreators, Dispatch } from 'redux';
+import Header from '../components/Header';
+import MainSection from '../components/MainSection';
+import * as TodoActions from '../actions/TodoActions';
+import {
+  TodoAction,
+  TodoActions as TodoActionsType,
+} from '../actions/TodoActions';
+import { TodoState } from '../reducers';
+import { Todo } from '../reducers/todos';
+
+interface Props {
+  todos: Todo[];
+  actions: TodoActionsType;
+}
+
+const TodoApp: FunctionComponent<Props> = ({ todos, actions }) => (
+  <div>
+    {/* eslint-disable-next-line @typescript-eslint/unbound-method */}
+    <Header addTodo={actions.addTodo} />
+    <MainSection todos={todos} actions={actions} />
+  </div>
+);
+
+TodoApp.propTypes = {
+  todos: PropTypes.array.isRequired,
+  actions: PropTypes.any.isRequired,
+};
+
+function mapState(state: TodoState) {
+  return {
+    todos: state.todos,
+  };
+}
+
+function mapDispatch(dispatch: Dispatch<TodoAction>) {
+  return {
+    actions: bindActionCreators(TodoActions, dispatch),
+  };
+}
+
+export default connect(mapState, mapDispatch)(TodoApp);
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/index.js b/packages/redux-devtools-slider-monitor/examples/todomvc/index.js
deleted file mode 100644
index 1415975c..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/index.js
+++ /dev/null
@@ -1,23 +0,0 @@
-import 'todomvc-app-css/index.css';
-import React from 'react';
-import ReactDOM from 'react-dom';
-import { AppContainer } from 'react-hot-loader';
-import configureStore from './store/configureStore';
-import Root from './containers/Root';
-
-const store = configureStore();
-
-const rootEl = document.getElementById('root');
-const render = () => {
-  ReactDOM.render(
-    <AppContainer>
-      <Root store={store} />
-    </AppContainer>,
-    rootEl
-  );
-};
-
-render(Root);
-if (module.hot) {
-  module.hot.accept('./containers/Root', render);
-}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/index.tsx b/packages/redux-devtools-slider-monitor/examples/todomvc/index.tsx
new file mode 100644
index 00000000..6e0ad757
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/index.tsx
@@ -0,0 +1,29 @@
+import 'todomvc-app-css/index.css';
+import React from 'react';
+import ReactDOM from 'react-dom';
+import { AppContainer } from 'react-hot-loader';
+import configureStore from './store/configureStore';
+import Root from './containers/Root';
+
+const store = configureStore();
+
+const rootEl = document.getElementById('root');
+ReactDOM.render(
+  <AppContainer>
+    <Root store={store} />
+  </AppContainer>,
+  rootEl
+);
+
+if (module.hot) {
+  module.hot.accept('./containers/Root', () => {
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    const RootContainer = require('./containers/Root').default;
+    ReactDOM.render(
+      <AppContainer>
+        <RootContainer store={store} />
+      </AppContainer>,
+      rootEl
+    );
+  });
+}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/package.json b/packages/redux-devtools-slider-monitor/examples/todomvc/package.json
index c238684b..2e0937ec 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/package.json
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/package.json
@@ -2,22 +2,23 @@
   "name": "slider-todomvc",
   "version": "0.0.2",
   "description": "TodoMVC example for redux",
-  "private": true,
-  "main": "index.js",
-  "scripts": {
-    "start": "webpack-dev-server",
-    "build": "webpack --config webpack.config.prod.js"
-  },
+  "license": "MIT",
   "repository": {
     "type": "git",
     "url": "https://github.com/calesce/redux-slider-monitor.git"
   },
-  "license": "MIT",
+  "scripts": {
+    "start": "webpack-dev-server",
+    "lint": "eslint . --ext .ts,.tsx",
+    "lint:fix": "eslint . --ext .ts,.tsx --fix",
+    "type-check": "tsc --noEmit",
+    "type-check:watch": "npm run type-check -- --watch"
+  },
   "dependencies": {
     "classnames": "^2.2.6",
-    "react-hot-loader": "^4.12.21",
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
+    "react-hot-loader": "^4.12.21",
     "react-redux": "^7.2.1",
     "redux": "^4.0.5",
     "redux-devtools": "^3.7.0",
@@ -25,5 +26,12 @@
     "redux-devtools-log-monitor": "^2.1.0",
     "redux-devtools-slider-monitor": "^2.0.0-5",
     "todomvc-app-css": "^2.3.0"
-  }
+  },
+  "devDependencies": {
+    "@types/classnames": "^2.2.10",
+    "@types/react": "^16.9.46",
+    "@types/react-dom": "^16.9.8",
+    "@types/react-redux": "^7.1.9"
+  },
+  "private": true
 }
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/index.js b/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/index.ts
similarity index 58%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/reducers/index.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/reducers/index.ts
index e59c909e..d7b67c58 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/index.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/index.ts
@@ -1,5 +1,9 @@
 import { combineReducers } from 'redux';
-import todos from './todos';
+import todos, { Todo } from './todos';
+
+export interface TodoState {
+  todos: Todo[];
+}
 
 const rootReducer = combineReducers({
   todos,
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/todos.js b/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/todos.ts
similarity index 77%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/reducers/todos.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/reducers/todos.ts
index 067c6bdf..8c5cafae 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/todos.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/reducers/todos.ts
@@ -6,8 +6,15 @@ import {
   MARK_ALL,
   CLEAR_MARKED,
 } from '../constants/ActionTypes';
+import { TodoAction } from '../actions/TodoActions';
 
-const initialState = [
+export interface Todo {
+  text: string;
+  marked: boolean;
+  id: number;
+}
+
+const initialState: Todo[] = [
   {
     text: 'Use Redux',
     marked: false,
@@ -15,7 +22,7 @@ const initialState = [
   },
 ];
 
-export default function todos(state = initialState, action) {
+export default function todos(state = initialState, action: TodoAction) {
   switch (action.type) {
     case ADD_TODO:
       return [
@@ -48,7 +55,7 @@ export default function todos(state = initialState, action) {
       }));
     }
     case CLEAR_MARKED:
-      return state.filter((todo) => todo.marked === false);
+      return state.filter((todo) => !todo.marked);
 
     default:
       return state;
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.js b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.js
deleted file mode 100644
index 265281d1..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.js
+++ /dev/null
@@ -1,19 +0,0 @@
-import { createStore, compose } from 'redux';
-import { persistState } from 'redux-devtools';
-import rootReducer from '../reducers';
-import DevTools from '../containers/DevTools';
-
-const finalCreateStore = compose(
-  DevTools.instrument(),
-  persistState(window.location.href.match(/[?&]debug_session=([^&]+)\b/))
-)(createStore);
-
-export default function configureStore(initialState) {
-  const store = finalCreateStore(rootReducer, initialState);
-
-  if (module.hot) {
-    module.hot.accept('../reducers', () => store.replaceReducer(rootReducer));
-  }
-
-  return store;
-}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.ts b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.ts
new file mode 100644
index 00000000..d5886984
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.dev.ts
@@ -0,0 +1,26 @@
+import { createStore, compose, PreloadedState } from 'redux';
+import { persistState } from 'redux-devtools';
+import rootReducer, { TodoState } from '../reducers';
+import DevTools from '../containers/DevTools';
+
+function getDebugSessionKey() {
+  const matches = /[?&]debug_session=([^&#]+)\b/.exec(window.location.href);
+  return matches && matches.length > 0 ? matches[1] : null;
+}
+
+const enhancer = compose(
+  DevTools.instrument(),
+  persistState(getDebugSessionKey())
+);
+
+export default function configureStore(
+  initialState?: PreloadedState<TodoState>
+) {
+  const store = createStore(rootReducer, initialState, enhancer);
+
+  if (module.hot) {
+    module.hot.accept('../reducers', () => store.replaceReducer(rootReducer));
+  }
+
+  return store;
+}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.js b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.js
deleted file mode 100644
index 0304a9d6..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.js
+++ /dev/null
@@ -1,6 +0,0 @@
-/* eslint-disable global-require */
-if (process.env.NODE_ENV === 'production') {
-  module.exports = require('./configureStore.prod');
-} else {
-  module.exports = require('./configureStore.dev');
-}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.js b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.js
deleted file mode 100644
index 2872f85a..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.js
+++ /dev/null
@@ -1,6 +0,0 @@
-import { createStore } from 'redux';
-import rootReducer from '../reducers';
-
-export default function configureStore(initialState) {
-  return createStore(rootReducer, initialState);
-}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.ts b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.ts
new file mode 100644
index 00000000..36871017
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.prod.ts
@@ -0,0 +1,8 @@
+import { createStore, PreloadedState } from 'redux';
+import rootReducer, { TodoState } from '../reducers';
+
+export default function configureStore(
+  initialState?: PreloadedState<TodoState>
+) {
+  return createStore(rootReducer, initialState);
+}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.ts b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.ts
new file mode 100644
index 00000000..10b218a1
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/store/configureStore.ts
@@ -0,0 +1,13 @@
+import { PreloadedState, Store } from 'redux';
+import { TodoState } from '../reducers';
+import { TodoAction } from '../actions/TodoActions';
+
+const configureStore: (
+  initialState?: PreloadedState<TodoState>
+) => Store<TodoState, TodoAction> =
+  process.env.NODE_ENV === 'production'
+    ? // eslint-disable-next-line @typescript-eslint/no-var-requires
+      require('./configureStore.prod').default
+    : // eslint-disable-next-line @typescript-eslint/no-var-requires
+      require('./configureStore.dev').default;
+export default configureStore;
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.json b/packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.json
new file mode 100644
index 00000000..0e4169ca
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.json
@@ -0,0 +1,4 @@
+{
+  "extends": "../../../../tsconfig.react.base.json",
+  "include": ["."]
+}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.webpack.json b/packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.webpack.json
new file mode 100644
index 00000000..1d04dfd1
--- /dev/null
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/tsconfig.webpack.json
@@ -0,0 +1,4 @@
+{
+  "extends": "../../../../tsconfig.base.json",
+  "include": ["webpack.config.ts"]
+}
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.prod.js b/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.prod.js
deleted file mode 100644
index 6a750bc9..00000000
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.prod.js
+++ /dev/null
@@ -1,8 +0,0 @@
-// NOTE: This config is used for deploy to gh-pages
-const webpack = require('webpack');
-const devConfig = require('./webpack.config');
-
-devConfig.entry = './index';
-devConfig.plugins = [new webpack.NoEmitOnErrorsPlugin()];
-
-module.exports = devConfig;
diff --git a/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.js b/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.ts
similarity index 75%
rename from packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.js
rename to packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.ts
index f8585aaa..e443d8a3 100644
--- a/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.js
+++ b/packages/redux-devtools-slider-monitor/examples/todomvc/webpack.config.ts
@@ -1,15 +1,8 @@
-const path = require('path');
-const webpack = require('webpack');
+import * as path from 'path';
+import * as webpack from 'webpack';
 
 module.exports = {
-  devtool: 'eval-source-map',
-  devServer: {
-    contentBase: path.join(__dirname, 'dist'),
-    host: 'localhost',
-    port: process.env.PORT || 3000,
-    historyApiFallback: true,
-    hot: true,
-  },
+  mode: process.env.NODE_ENV === 'production' ? 'production' : 'development',
   entry: [
     'webpack-dev-server/client?http://localhost:3000',
     'webpack/hot/only-dev-server',
@@ -19,14 +12,13 @@ module.exports = {
     path: path.join(__dirname, 'dist'),
     filename: 'bundle.js',
   },
-  plugins: [new webpack.HotModuleReplacementPlugin()],
   module: {
     rules: [
       {
-        test: /\.js$/,
+        test: /\.(js|ts)x?$/,
         use: ['babel-loader'],
         exclude: /node_modules/,
-        include: [__dirname, path.join(__dirname, '../../src')],
+        include: __dirname,
       },
       {
         test: /\.css?$/,
@@ -42,4 +34,16 @@ module.exports = {
       },
     ],
   },
+  resolve: {
+    extensions: ['.js', '.jsx', '.ts', '.tsx'],
+  },
+  plugins: [new webpack.HotModuleReplacementPlugin()],
+  devServer: {
+    contentBase: path.join(__dirname, 'dist'),
+    host: 'localhost',
+    port: process.env.PORT || 3000,
+    historyApiFallback: true,
+    hot: true,
+  },
+  devtool: 'eval-source-map',
 };
diff --git a/packages/redux-devtools/examples/todomvc/containers/Root.ts b/packages/redux-devtools/examples/todomvc/containers/Root.ts
index 31872b0a..15e0f4cc 100644
--- a/packages/redux-devtools/examples/todomvc/containers/Root.ts
+++ b/packages/redux-devtools/examples/todomvc/containers/Root.ts
@@ -1,7 +1,7 @@
 import { Store } from 'redux';
+import { ComponentType } from 'react';
 import { TodoState } from '../reducers';
 import { TodoAction } from '../actions/TodoActions';
-import { ComponentType } from 'react';
 
 interface Props {
   store: Store<TodoState, TodoAction>;
diff --git a/packages/redux-devtools/examples/todomvc/package.json b/packages/redux-devtools/examples/todomvc/package.json
index 20e3bf0d..de83e978 100644
--- a/packages/redux-devtools/examples/todomvc/package.json
+++ b/packages/redux-devtools/examples/todomvc/package.json
@@ -48,8 +48,7 @@
     "@types/prop-types": "^15.7.3",
     "@types/react": "^16.9.46",
     "@types/react-dom": "^16.9.8",
-    "@types/react-redux": "^7.1.9",
-    "@types/webpack-env": "^1.15.2"
+    "@types/react-redux": "^7.1.9"
   },
   "private": true
 }