feat(frontend): redo setup with ts+tailwind and implement auth+header

.dockerignore

@@ -1,4 +1,5 @@
-node_modules
+node_modules/
-dist
+dist/
 
-frontend/node_modules
+frontend/node_modules/
+frontend/src/tailwind/tailwind.generated.css

.gitignore

@@ -35,4 +35,7 @@ lerna-debug.log*
 !.vscode/extensions.json
 
 # Credentials
-.env
+.env
+
+# Tailwind
+frontend/src/tailwind.generated.css

Dockerfile

@@ -20,7 +20,7 @@ LABEL stage="build-api"
 RUN npm ci
 
 COPY src/ /app/src/
-RUN npm run build
+RUN NODE_ENV=production npm run build
 
 ##################
 ## build-frontend
@@ -32,9 +32,10 @@ WORKDIR /app/frontend
 
 RUN npm ci
 
+COPY frontend/postcss.config.js /app/frontend/postcss.config.js
 COPY frontend/src/ /app/frontend/src/
 COPY frontend/public/ /app/frontend/public/
-RUN npm run build
+RUN NODE_ENV=production npm run build
 
 ##################
 ## app

docker-compose.yml

@@ -38,8 +38,12 @@ services:
       target: build-frontend
     command: ["npm", "run", "start"]
     volumes:
-      - ./frontend/src:/app/frontend/src
+      - ./frontend/postcss.config.js:/app/frontend/postcss.config.js:ro
-      - ./frontend/public:/app/frontend/public
+      - ./frontend/src:/app/frontend/src:ro
+      - ./frontend/public:/app/frontend/public:ro
+      - tailwind-output:/app/frontend/src/tailwind/
+    # Workaround for https://github.com/facebook/create-react-app/issues/8688
+    stdin_open: true
     ports:
       - 3000
     labels:
@@ -68,6 +72,9 @@ services:
     volumes:
       - /var/run/docker.sock:/var/run/docker.sock # So that Traefik can listen to the Docker events
 
+volumes:
+  tailwind-output: {}
+
 networks:
   db: {}
   web: {}

frontend/README.md

@@ -33,7 +33,7 @@ See the section about [deployment](https://facebook.github.io/create-react-app/d
 
 If you aren’t satisfied with the build tool and configuration choices, you can `eject` at any time. This command will remove the single build dependency from your project.
 
-Instead, it will copy all the configuration files and the transitive dependencies (Webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
+Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except `eject` will still work, but they will point to the copied scripts so you can tweak them. At this point you’re on your own.
 
 You don’t have to ever use `eject`. The curated feature set is suitable for small and middle deployments, and you shouldn’t feel obligated to use this feature. However we understand that this tool wouldn’t be useful if you couldn’t customize it when you are ready for it.
 
@@ -42,27 +42,3 @@ You don’t have to ever use `eject`. The curated feature set is suitable for sm
 You can learn more in the [Create React App documentation](https://facebook.github.io/create-react-app/docs/getting-started).
 
 To learn React, check out the [React documentation](https://reactjs.org/).
-
-### Code Splitting
-
-This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting
-
-### Analyzing the Bundle Size
-
-This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size
-
-### Making a Progressive Web App
-
-This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app
-
-### Advanced Configuration
-
-This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration
-
-### Deployment
-
-This section has moved here: https://facebook.github.io/create-react-app/docs/deployment
-
-### `npm run build` fails to minify
-
-This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify

frontend/package.json

@@ -3,17 +3,30 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@auth0/auth0-spa-js": "^1.6.2",
+    "@fullhuman/postcss-purgecss": "^2.1.2",
     "@testing-library/jest-dom": "^4.2.4",
-    "@testing-library/react": "^9.4.0",
+    "@testing-library/react": "^9.5.0",
     "@testing-library/user-event": "^7.2.1",
-    "react": "^16.12.0",
+    "@types/jest": "^24.9.1",
-    "react-dom": "^16.12.0",
+    "@types/node": "^12.12.37",
+    "@types/react": "^16.9.34",
+    "@types/react-dom": "^16.9.7",
+    "autoprefixer": "^9.7.6",
+    "npm-run-all": "^4.1.5",
+    "postcss-cli": "^7.1.1",
+    "react": "^16.13.1",
+    "react-dom": "^16.13.1",
     "react-router-dom": "^5.1.2",
-    "react-scripts": "3.3.0"
+    "react-scripts": "3.4.1",
+    "tailwindcss": "^1.4.2",
+    "typescript": "^3.7.5"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "build:tailwind": "postcss src/tailwind.css -o src/tailwind/generated.css",
+    "watch:tailwind": "postcss -w src/tailwind.css -o src/tailwind/generated.css",
+    "start": "run-p start:react watch:tailwind",
+    "start:react": "react-scripts start",
+    "prebuild": "npm run build:tailwind",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject"
@@ -32,5 +45,8 @@
       "last 1 firefox version",
       "last 1 safari version"
     ]
+  },
+  "devDependencies": {
+    "@types/react-router-dom": "^5.1.5"
   }
 }

frontend/postcss.config.js

@@ -0,0 +1,15 @@
+const purgecss = require("@fullhuman/postcss-purgecss")({
+  // Specify the paths to all of the template files in your project
+  content: ["./public/**/*.html", "./src/**/*.tsx"],
+
+  // Include any special characters you're using in this regular expression
+  defaultExtractor: content => content.match(/[\w-/:]+(?<!:)/g) || []
+});
+
+module.exports = {
+  plugins: [
+    require("tailwindcss"),
+    require("autoprefixer"),
+    ...(process.env.NODE_ENV === "production" ? [purgecss] : [])
+  ]
+};

frontend/public/index.html

@@ -5,39 +5,12 @@
     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1" />
     <meta name="theme-color" content="#000000" />
-    <meta
+    <meta name="description" content="Listory - Track your Spotify Listens" />
-      name="description"
-      content="Web site created using create-react-app"
-    />
-    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
-    <!--
-      manifest.json provides metadata used when your web app is installed on a
-      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
-    -->
     <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
-    <!--
+    <title>Listory - Spotify Listen History</title>
-      Notice the use of %PUBLIC_URL% in the tags above.
-      It will be replaced with the URL of the `public` folder during the build.
-      Only files inside the `public` folder can be referenced from the HTML.
-
-      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
-      work correctly both with client-side routing and a non-root public URL.
-      Learn how to configure a non-root public URL by running `npm run build`.
-    -->
-    <title>React App</title>
   </head>
   <body>
     <noscript>You need to enable JavaScript to run this app.</noscript>
     <div id="root"></div>
-    <!--
-      This HTML file is a template.
-      If you open it directly in the browser, you will see an empty page.
-
-      You can add webfonts, meta tags, or analytics to this file.
-      The build step will place the bundled scripts into the <body> tag.
-
-      To begin the development, run `npm start` or `yarn start`.
-      To create a production bundle, use `npm run build` or `yarn build`.
-    -->
   </body>
 </html>

frontend/public/manifest.json

@@ -1,23 +1,7 @@
 {
-  "short_name": "React App",
+  "short_name": "Listory",
-  "name": "Create React App Sample",
+  "name": "Listory - Track your Spotify Listens",
-  "icons": [
+  "icons": [],
-    {
-      "src": "favicon.ico",
-      "sizes": "64x64 32x32 24x24 16x16",
-      "type": "image/x-icon"
-    },
-    {
-      "src": "logo192.png",
-      "type": "image/png",
-      "sizes": "192x192"
-    },
-    {
-      "src": "logo512.png",
-      "type": "image/png",
-      "sizes": "512x512"
-    }
-  ],
   "start_url": ".",
   "display": "standalone",
   "theme_color": "#000000",

frontend/public/robots.txt

@@ -1,2 +1,3 @@
 # https://www.robotstxt.org/robotstxt.html
 User-agent: *
+Disallow:

frontend/src/App.js

@@ -1,21 +0,0 @@
-import React from "react";
-import { Route, Router, Switch } from "react-router-dom";
-import history from "./utils/history";
-import { NavBar } from "./components/NavBar";
-
-function App() {
-  return (
-    <div className="App">
-      <Router history={history}>
-        <header>
-          <NavBar></NavBar>
-        </header>
-        <Switch>
-          <Route path="/" exact />
-        </Switch>
-      </Router>
-    </div>
-  );
-}
-
-export default App;

frontend/src/App.tsx

@@ -0,0 +1,26 @@
+import React from "react";
+import { Route, Switch } from "react-router-dom";
+import { NavBar } from "./components/NavBar";
+import { useAuth } from "./hooks/use-auth";
+import "./tailwind/generated.css";
+
+export function App() {
+  const { isLoaded } = useAuth();
+
+  console.log("App", { isLoaded });
+
+  if (!isLoaded) {
+    return <div>Loading...</div>;
+  }
+
+  return (
+    <div className="App">
+      <header>
+        <NavBar />
+      </header>
+      <Switch>
+        <Route path="/" exact />
+      </Switch>
+    </div>
+  );
+}

frontend/src/api/api.ts

@@ -0,0 +1,40 @@
+import { User } from "./user";
+
+export class UnauthenticatedError extends Error {}
+
+const getToken = (): string => {
+  const cookieValue = document.cookie.replace(
+    /(?:(?:^|.*;\s*)listory_access_token\s*=\s*([^;]*).*$)|^.*$/,
+    "$1"
+  );
+
+  return cookieValue;
+};
+
+const getDefaultHeaders = (): Headers => {
+  const headers = new Headers();
+
+  headers.append("Content-Type", "application/json");
+  headers.append("Authorization", `Bearer ${getToken()}`);
+
+  return headers;
+};
+
+export const getUsersMe = async (): Promise<User> => {
+  const res = await fetch(`api/v1/users/me`, { headers: getDefaultHeaders() });
+
+  switch (res.status) {
+    case 200: {
+      break;
+    }
+    case 401: {
+      throw new UnauthenticatedError(`No token or token expired`);
+    }
+    default: {
+      throw new Error(`Unable to getUsersMe: ${res.status}`);
+    }
+  }
+
+  const user: User = await res.json();
+  return user;
+};

frontend/src/api/user.ts

@@ -0,0 +1,5 @@
+export interface User {
+  id: string;
+  displayName: string;
+  photo?: string;
+}

frontend/src/components/NavBar.jsx

@@ -1,9 +0,0 @@
-import React from "react";
-
-export function NavBar() {
-  return (
-    <div>
-      <a href="/api/v1/auth/spotify">Login with Spotify</a>
-    </div>
-  );
-}

frontend/src/components/NavBar.tsx

@@ -0,0 +1,56 @@
+import React from "react";
+import { Link } from "react-router-dom";
+import { User } from "../api/user";
+import { useAuth } from "../hooks/use-auth";
+import { SpotifyLogo } from "../icons/Spotify";
+
+export const NavBar: React.FC = () => {
+  const { user, loginWithSpotifyProps } = useAuth();
+
+  return (
+    <nav className="flex items-center justify-between flex-wrap bg-green-500 p-6">
+      <div className="flex items-center flex-shrink-0 text-white mr-6">
+        <span className="font-semibold text-xl tracking-tight">Listory</span>
+      </div>
+      <div className="w-full block flex-grow lg:flex lg:items-center lg:w-auto">
+        <div className="text-sm lg:flex-grow">
+          {user && (
+            <Link to="/">
+              <NavItem>Home</NavItem>
+            </Link>
+          )}
+        </div>
+        <div>
+          {!user && (
+            <a {...loginWithSpotifyProps()}>
+              <NavItem>
+                Login with Spotify{" "}
+                <SpotifyLogo className="w-6 h-6 ml-2 mb-1 inline fill-current text-white" />
+              </NavItem>
+            </a>
+          )}
+          {user && <NavUserInfo user={user} />}
+        </div>
+      </div>
+    </nav>
+  );
+};
+
+const NavUserInfo: React.FC<{ user: User }> = ({ user }) => {
+  return (
+    <div className="flex items-center mr-4">
+      <span className="text-green-200 text-sm">{user.displayName}</span>
+      {user.photo && (
+        <img className="w-6 h-6 rounded-full ml-4" src={user.photo}></img>
+      )}
+    </div>
+  );
+};
+
+const NavItem: React.FC = ({ children }) => {
+  return (
+    <span className="block mt-4 lg:inline-block lg:mt-0 text-green-200 hover:text-white mr-4">
+      {children}
+    </span>
+  );
+};

frontend/src/components/NavItem.tsx

@@ -0,0 +1,5 @@
+import React from "react";
+
+export const NavItem: React.FC = ({ children }) => {
+  return <li>{children}</li>;
+};

frontend/src/hooks/use-auth.tsx

@@ -0,0 +1,53 @@
+import React, { createContext, useContext, useEffect, useState } from "react";
+import { getUsersMe, UnauthenticatedError } from "../api/api";
+import { User } from "../api/user";
+
+const authContext = createContext<AuthContext>(
+  (undefined as any) as AuthContext
+);
+
+// Provider component that wraps your app and makes auth object ...
+// ... available to any child component that calls useAuth().
+
+interface AuthContext {
+  user: { id: string; displayName: string } | null;
+  isLoaded: boolean;
+  loginWithSpotifyProps: () => { href: string };
+}
+
+export const ProvideAuth: React.FC = ({ children }) => {
+  const auth = useProvideAuth();
+
+  return <authContext.Provider value={auth}>{children}</authContext.Provider>;
+};
+
+export function useAuth() {
+  return useContext(authContext);
+}
+
+function useProvideAuth(): AuthContext {
+  const [isLoaded, setIsLoaded] = useState(false);
+  const [user, setUser] = useState<User | null>(null);
+
+  const loginWithSpotifyProps = () => ({ href: "/api/v1/auth/spotify" });
+
+  useEffect(() => {
+    (async () => {
+      try {
+        console.log("before calling getUsersMe");
+        const currentUser = await getUsersMe();
+        setUser(currentUser);
+      } catch (err) {
+        if (err instanceof UnauthenticatedError) {
+          // User is not logged in
+        } else {
+          console.error("Error while checking login state:", err);
+        }
+      } finally {
+        setIsLoaded(true);
+      }
+    })();
+  }, []);
+
+  return { isLoaded, user, loginWithSpotifyProps };
+}

frontend/src/icons/Spotify.tsx

@@ -0,0 +1,19 @@
+import React from "react";
+
+interface SVGProps {
+  className?: string;
+}
+
+export const SpotifyLogo: React.FC<SVGProps> = ({ className }) => {
+  return (
+    <svg
+      xmlns="http://www.w3.org/2000/svg"
+      width="168"
+      height="168"
+      viewBox="0 0 168 168"
+      className={className}
+    >
+      <path d="M83.996.277C37.747.277.253 37.77.253 84.019c0 46.251 37.494 83.741 83.743 83.741 46.254 0 83.744-37.49 83.744-83.741 0-46.246-37.49-83.738-83.745-83.738l.001-.004zm38.404 120.78a5.217 5.217 0 01-7.18 1.73c-19.662-12.01-44.414-14.73-73.564-8.07a5.222 5.222 0 01-6.249-3.93 5.213 5.213 0 013.926-6.25c31.9-7.291 59.263-4.15 81.337 9.34 2.46 1.51 3.24 4.72 1.73 7.18zm10.25-22.805c-1.89 3.075-5.91 4.045-8.98 2.155-22.51-13.839-56.823-17.846-83.448-9.764-3.453 1.043-7.1-.903-8.148-4.35a6.538 6.538 0 014.354-8.143c30.413-9.228 68.222-4.758 94.072 11.127 3.07 1.89 4.04 5.91 2.15 8.976v-.001zm.88-23.744c-26.99-16.031-71.52-17.505-97.289-9.684-4.138 1.255-8.514-1.081-9.768-5.219a7.835 7.835 0 015.221-9.771c29.581-8.98 78.756-7.245 109.83 11.202a7.823 7.823 0 012.74 10.733c-2.2 3.722-7.02 4.949-10.73 2.739z"></path>
+    </svg>
+  );
+};

frontend/src/index.js

@@ -1,8 +0,0 @@
-import React from "react";
-import ReactDOM from "react-dom";
-import App from "./App";
-import * as serviceWorker from "./serviceWorker";
-
-ReactDOM.render(<App />, document.getElementById("root"));
-
-serviceWorker.unregister();

frontend/src/index.tsx

@@ -0,0 +1,16 @@
+import React from "react";
+import ReactDOM from "react-dom";
+import { BrowserRouter } from "react-router-dom";
+import { App } from "./App";
+import { ProvideAuth } from "./hooks/use-auth";
+
+ReactDOM.render(
+  <React.StrictMode>
+    <ProvideAuth>
+      <BrowserRouter>
+        <App />
+      </BrowserRouter>
+    </ProvideAuth>
+  </React.StrictMode>,
+  document.getElementById("root")
+);

frontend/src/logo.svg

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 841.9 595.3">
+    <g fill="#61DAFB">
+        <path d="M666.3 296.5c0-32.5-40.7-63.3-103.1-82.4 14.4-63.6 8-114.2-20.2-130.4-6.5-3.8-14.1-5.6-22.4-5.6v22.3c4.6 0 8.3.9 11.4 2.6 13.6 7.8 19.5 37.5 14.9 75.7-1.1 9.4-2.9 19.3-5.1 29.4-19.6-4.8-41-8.5-63.5-10.9-13.5-18.5-27.5-35.3-41.6-50 32.6-30.3 63.2-46.9 84-46.9V78c-27.5 0-63.5 19.6-99.9 53.6-36.4-33.8-72.4-53.2-99.9-53.2v22.3c20.7 0 51.4 16.5 84 46.6-14 14.7-28 31.4-41.3 49.9-22.6 2.4-44 6.1-63.6 11-2.3-10-4-19.7-5.2-29-4.7-38.2 1.1-67.9 14.6-75.8 3-1.8 6.9-2.6 11.5-2.6V78.5c-8.4 0-16 1.8-22.6 5.6-28.1 16.2-34.4 66.7-19.9 130.1-62.2 19.2-102.7 49.9-102.7 82.3 0 32.5 40.7 63.3 103.1 82.4-14.4 63.6-8 114.2 20.2 130.4 6.5 3.8 14.1 5.6 22.5 5.6 27.5 0 63.5-19.6 99.9-53.6 36.4 33.8 72.4 53.2 99.9 53.2 8.4 0 16-1.8 22.6-5.6 28.1-16.2 34.4-66.7 19.9-130.1 62-19.1 102.5-49.9 102.5-82.3zm-130.2-66.7c-3.7 12.9-8.3 26.2-13.5 39.5-4.1-8-8.4-16-13.1-24-4.6-8-9.5-15.8-14.4-23.4 14.2 2.1 27.9 4.7 41 7.9zm-45.8 106.5c-7.8 13.5-15.8 26.3-24.1 38.2-14.9 1.3-30 2-45.2 2-15.1 0-30.2-.7-45-1.9-8.3-11.9-16.4-24.6-24.2-38-7.6-13.1-14.5-26.4-20.8-39.8 6.2-13.4 13.2-26.8 20.7-39.9 7.8-13.5 15.8-26.3 24.1-38.2 14.9-1.3 30-2 45.2-2 15.1 0 30.2.7 45 1.9 8.3 11.9 16.4 24.6 24.2 38 7.6 13.1 14.5 26.4 20.8 39.8-6.3 13.4-13.2 26.8-20.7 39.9zm32.3-13c5.4 13.4 10 26.8 13.8 39.8-13.1 3.2-26.9 5.9-41.2 8 4.9-7.7 9.8-15.6 14.4-23.7 4.6-8 8.9-16.1 13-24.1zM421.2 430c-9.3-9.6-18.6-20.3-27.8-32 9 .4 18.2.7 27.5.7 9.4 0 18.7-.2 27.8-.7-9 11.7-18.3 22.4-27.5 32zm-74.4-58.9c-14.2-2.1-27.9-4.7-41-7.9 3.7-12.9 8.3-26.2 13.5-39.5 4.1 8 8.4 16 13.1 24 4.7 8 9.5 15.8 14.4 23.4zM420.7 163c9.3 9.6 18.6 20.3 27.8 32-9-.4-18.2-.7-27.5-.7-9.4 0-18.7.2-27.8.7 9-11.7 18.3-22.4 27.5-32zm-74 58.9c-4.9 7.7-9.8 15.6-14.4 23.7-4.6 8-8.9 16-13 24-5.4-13.4-10-26.8-13.8-39.8 13.1-3.1 26.9-5.8 41.2-7.9zm-90.5 125.2c-35.4-15.1-58.3-34.9-58.3-50.6 0-15.7 22.9-35.6 58.3-50.6 8.6-3.7 18-7 27.7-10.1 5.7 19.6 13.2 40 22.5 60.9-9.2 20.8-16.6 41.1-22.2 60.6-9.9-3.1-19.3-6.5-28-10.2zM310 490c-13.6-7.8-19.5-37.5-14.9-75.7 1.1-9.4 2.9-19.3 5.1-29.4 19.6 4.8 41 8.5 63.5 10.9 13.5 18.5 27.5 35.3 41.6 50-32.6 30.3-63.2 46.9-84 46.9-4.5-.1-8.3-1-11.3-2.7zm237.2-76.2c4.7 38.2-1.1 67.9-14.6 75.8-3 1.8-6.9 2.6-11.5 2.6-20.7 0-51.4-16.5-84-46.6 14-14.7 28-31.4 41.3-49.9 22.6-2.4 44-6.1 63.6-11 2.3 10.1 4.1 19.8 5.2 29.1zm38.5-66.7c-8.6 3.7-18 7-27.7 10.1-5.7-19.6-13.2-40-22.5-60.9 9.2-20.8 16.6-41.1 22.2-60.6 9.9 3.1 19.3 6.5 28.1 10.2 35.4 15.1 58.3 34.9 58.3 50.6-.1 15.7-23 35.6-58.4 50.6zM320.8 78.4z"/>
+        <circle cx="420.9" cy="296.5" r="45.7"/>
+        <path d="M520.5 78.1z"/>
+    </g>
+</svg>

frontend/src/react-app-env.d.ts

@@ -0,0 +1 @@
+/// <reference types="react-scripts" />

frontend/src/serviceWorker.js

@@ -1,137 +0,0 @@
-// This optional code is used to register a service worker.
-// register() is not called by default.
-
-// This lets the app load faster on subsequent visits in production, and gives
-// it offline capabilities. However, it also means that developers (and users)
-// will only see deployed updates on subsequent visits to a page, after all the
-// existing tabs open on the page have been closed, since previously cached
-// resources are updated in the background.
-
-// To learn more about the benefits of this model and instructions on how to
-// opt-in, read https://bit.ly/CRA-PWA
-
-const isLocalhost = Boolean(
-  window.location.hostname === 'localhost' ||
-    // [::1] is the IPv6 localhost address.
-    window.location.hostname === '[::1]' ||
-    // 127.0.0.0/8 are considered localhost for IPv4.
-    window.location.hostname.match(
-      /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
-    )
-);
-
-export function register(config) {
-  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
-    // The URL constructor is available in all browsers that support SW.
-    const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
-    if (publicUrl.origin !== window.location.origin) {
-      // Our service worker won't work if PUBLIC_URL is on a different origin
-      // from what our page is served on. This might happen if a CDN is used to
-      // serve assets; see https://github.com/facebook/create-react-app/issues/2374
-      return;
-    }
-
-    window.addEventListener('load', () => {
-      const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
-
-      if (isLocalhost) {
-        // This is running on localhost. Let's check if a service worker still exists or not.
-        checkValidServiceWorker(swUrl, config);
-
-        // Add some additional logging to localhost, pointing developers to the
-        // service worker/PWA documentation.
-        navigator.serviceWorker.ready.then(() => {
-          console.log(
-            'This web app is being served cache-first by a service ' +
-              'worker. To learn more, visit https://bit.ly/CRA-PWA'
-          );
-        });
-      } else {
-        // Is not localhost. Just register service worker
-        registerValidSW(swUrl, config);
-      }
-    });
-  }
-}
-
-function registerValidSW(swUrl, config) {
-  navigator.serviceWorker
-    .register(swUrl)
-    .then(registration => {
-      registration.onupdatefound = () => {
-        const installingWorker = registration.installing;
-        if (installingWorker == null) {
-          return;
-        }
-        installingWorker.onstatechange = () => {
-          if (installingWorker.state === 'installed') {
-            if (navigator.serviceWorker.controller) {
-              // At this point, the updated precached content has been fetched,
-              // but the previous service worker will still serve the older
-              // content until all client tabs are closed.
-              console.log(
-                'New content is available and will be used when all ' +
-                  'tabs for this page are closed. See https://bit.ly/CRA-PWA.'
-              );
-
-              // Execute callback
-              if (config && config.onUpdate) {
-                config.onUpdate(registration);
-              }
-            } else {
-              // At this point, everything has been precached.
-              // It's the perfect time to display a
-              // "Content is cached for offline use." message.
-              console.log('Content is cached for offline use.');
-
-              // Execute callback
-              if (config && config.onSuccess) {
-                config.onSuccess(registration);
-              }
-            }
-          }
-        };
-      };
-    })
-    .catch(error => {
-      console.error('Error during service worker registration:', error);
-    });
-}
-
-function checkValidServiceWorker(swUrl, config) {
-  // Check if the service worker can be found. If it can't reload the page.
-  fetch(swUrl, {
-    headers: { 'Service-Worker': 'script' }
-  })
-    .then(response => {
-      // Ensure service worker exists, and that we really are getting a JS file.
-      const contentType = response.headers.get('content-type');
-      if (
-        response.status === 404 ||
-        (contentType != null && contentType.indexOf('javascript') === -1)
-      ) {
-        // No service worker found. Probably a different app. Reload the page.
-        navigator.serviceWorker.ready.then(registration => {
-          registration.unregister().then(() => {
-            window.location.reload();
-          });
-        });
-      } else {
-        // Service worker found. Proceed as normal.
-        registerValidSW(swUrl, config);
-      }
-    })
-    .catch(() => {
-      console.log(
-        'No internet connection found. App is running in offline mode.'
-      );
-    });
-}
-
-export function unregister() {
-  if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.ready.then(registration => {
-      registration.unregister();
-    });
-  }
-}

frontend/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";

frontend/src/tailwind.css

@@ -0,0 +1,5 @@
+@tailwind base;
+
+@tailwind components;
+
+@tailwind utilities;

frontend/src/utils/history.js

@@ -1,2 +0,0 @@
-import { createBrowserHistory } from "history";
-export default createBrowserHistory();

frontend/tsconfig.json

@@ -0,0 +1,25 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "lib": [
+      "dom",
+      "dom.iterable",
+      "esnext"
+    ],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "esModuleInterop": true,
+    "allowSyntheticDefaultImports": true,
+    "strict": true,
+    "forceConsistentCasingInFileNames": true,
+    "module": "esnext",
+    "moduleResolution": "node",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "noEmit": true,
+    "jsx": "react"
+  },
+  "include": [
+    "src"
+  ]
+}