Initialize project with a few classes to get started

bfrontend/.gitignore

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+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.js
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

bfrontend/README.md

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+# Getting Started with Create React App
+
+This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
+
+## Available Scripts
+
+In the project directory, you can run:
+
+### `npm start`
+
+Runs the app in the development mode.\
+Open [http://localhost:3000](http://localhost:3000) to view it in the browser.
+
+The page will reload if you make edits.\
+You will also see any lint errors in the console.
+
+### `npm test`
+
+Launches the test runner in the interactive watch mode.\
+See the section about [running tests](https://facebook.github.io/create-react-app/docs/running-tests) for more information.
+
+### `npm run build`
+
+Builds the app for production to the `build` folder.\
+It correctly bundles React in production mode and optimizes the build for the best performance.
+
+The build is minified and the filenames include the hashes.\
+Your app is ready to be deployed!
+
+See the section about [deployment](https://facebook.github.io/create-react-app/docs/deployment) for more information.
+
+### `npm run eject`
+
+**Note: this is a one-way operation. Once you `eject`, you can’t go back!**
+
+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.
+
+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.
+
+## Learn More
+
+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](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](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](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](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](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](https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify)

bfrontend/package.json

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+{
+  "name": "bfrontend",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@testing-library/jest-dom": "^5.11.6",
+    "@testing-library/react": "^11.2.2",
+    "@testing-library/user-event": "^12.6.0",
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1",
+    "react-router-dom": "^5.2.0",
+    "react-scripts": "4.0.1",
+    "web-vitals": "^0.2.4"
+  },
+  "scripts": {
+    "start": "react-scripts start",
+    "build": "react-scripts build",
+    "test": "react-scripts test",
+    "eject": "react-scripts eject"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app",
+      "react-app/jest"
+    ]
+  },
+  "browserslist": {
+    "production": [
+      ">0.2%",
+      "not dead",
+      "not op_mini all"
+    ],
+    "development": [
+      "last 1 chrome version",
+      "last 1 firefox version",
+      "last 1 safari version"
+    ]
+  }
+}

bfrontend/public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Brainlet</title>
+</head>
+<body>
+    <noscript>Sorry, but JavaScript is required to render and view this page.</noscript>
+
+    <div id="root"></div>
+</body>
+</html>

bfrontend/public/manifest.json

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+{
+    "short_name": "Brainlet",
+    "name": "Brainlet",
+    "start_url": ".",
+    "display": "standalone",
+    "theme_color": "#000000",
+    "background_color": "#ffffff"
+}

bfrontend/public/robots.txt

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+User-agent: *
+Disallow: /

bfrontend/src/APIRequest.js

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+import config from './Config';
+
+async function APIRequest(endpoint, options) {
+    let res;
+    let json;
+    let isOK = false;
+    let err;
+
+    try {
+        res = await fetch(`${config.apiUrl}${endpoint}`, options);
+        json = await res.json();
+        isOK = true;
+    } catch(e) {
+        err = e;
+        isOK = false;
+    }
+
+    if (isOK && res.ok && !json.error) {
+        isOK = true;
+    } else {
+        isOK = false;
+    }
+
+    return { res, json, isOK, err };
+}
+
+APIRequest.authenticated = async function(endpoint, options) {
+    let res;
+    let json;
+    let isOK = false;
+    let err;
+
+    if (!options) options = {};
+    if (!options.headers) options.headers = {};
+
+    options.headers = {
+        credentials: 'include',
+        ...options.headers
+    };
+
+    try {
+        res = await fetch(`${config.apiUrl}${endpoint}`, options);
+        json = await res.json();
+        isOK = true;
+    } catch(e) {
+        err = e;
+        isOK = false;
+    }
+
+    if (isOK && res.ok && !json.error) {
+        isOK = true;
+    } else {
+        isOK = false;
+    }
+
+    return { res, json, isOK, err };
+};
+
+export default APIRequest;

bfrontend/src/Authenticator.js

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+import APIRequest from './APIRequest';
+
+class Authenticator {
+    constructor(method='cookie') {
+        this.method = method;
+        this.__token = undefined;
+        this.user = undefined;
+    }
+}
+
+Authenticator.prototype.fetchLoggedInUserInfo = async function(token) {
+    const { json, isOK } = await APIRequest.authenticated();
+    if (!isOK) return false;
+    if (!json.user) return false;
+
+    this.user = json.user;
+    this.__token = json.user.token;
+    return true;
+}
+
+Authenticator.prototype.setToken = function(token) {
+    this.__token = token;
+};
+
+Authenticator.prototype.getToken = function(token) {
+    return this.__token;
+};
+
+const authenticator = new Authenticator('cookie');
+export default authenticator;

bfrontend/src/Components/App.js

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+import { useEffect, useState } from 'react';
+import authenticator from './../Authenticator';
+
+export default function App() {
+    const [isLoggedIn, setIsLoggedIn] = useState([]);
+
+    useEffect(() => {
+        authenticator.fetchLoggedInUserInfo()
+            .then((res) => {
+                setIsLoggedIn(res);
+            });
+    }, [authenticator.user]);
+
+    return (
+        <Router>
+            <Switch>
+                <Route path="/login">
+
+                </Route>
+            </Switch>
+        </Router>
+    );
+}

bfrontend/src/Components/Auth/Login.js

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+export default function Login() {
+    
+}

bfrontend/src/Config.js

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+const config = {
+    apiUrl: 'http://localhost:3002'
+};
+
+export default config;

bfrontend/src/Logger.js

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+function loggerOfType(components, type='log') {
+    return (...args) => {
+        let str = '';
+        for (const v of components) {
+            str += `[${v}] `;
+        }
+        switch (type) {
+            case 'log': {
+                console.log(str, ...args);
+            }
+
+            case 'error': {
+                console.error(str, ...args);
+            }
+            
+            case 'warn': {
+                console.warn(str, ...args);
+            }
+
+            case 'genmsg': {
+                return str;
+            }
+        }
+        
+        return str;
+    }
+};
+
+export default function Logger(components, types=['warn', 'error', 'log']) {
+    const loggerObj = {};
+
+    for (type of types) {
+        loggerObj[type] = loggerOfType(components, type);
+    }
+
+    return loggerObj;
+}

bfrontend/src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom';
+import './index.css';
+import App from './Components/App';
+
+ReactDOM.render(
+    <React.StrictMode>
+        <App />
+    </React.StrictMode>,
+    document.getElementById('root')
+);