initial PoC Release

initial PoC Release

.gitignore

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+node_modules

Dockerfile

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+# Stage 1: Build the React application
+FROM node:21 as build
+WORKDIR /app
+COPY ./frontend/package.json ./frontend/package-lock.json ./
+RUN npm install
+COPY ./frontend .
+RUN npm run build
+
+# Stage 2: Serve the application with Nginx
+FROM nginx:alpine
+COPY --from=build /app/build /usr/share/nginx/html
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]

docker-compose.yml

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+version: '3.8'
+
+services:
+  dev:
+    image: node:21
+    volumes:
+      - ./frontend:/app
+    working_dir: /app
+    command: npm start
+    environment:
+      - NODE_ENV=development
+    ports:
+      - "3000:3000"
+    #stdin_open: true
+    #tty: true
+
+  reactocalc:
+    build: .
+    container_name: reactocalc
+    restart: unless-stopped
+    # Use WITHOUT Reverse Proxy Setup
+    ports:
+      - "80:80"
+    environment:
+      - NODE_ENV=production
+    # Used in Reverse Proxy Setup
+    #expose:
+    #   - 80
+    # Networks
+    #networks:
+    #  - reverse_proxy_network
+
+
+# Used in a reverse proxy setup
+# networks:
+#   reverse_proxy_network:
+#     name: reverse_proxy_network
+#     external: true

frontend/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 your browser.
+
+The page will reload when you make changes.\
+You may 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)

frontend/package.json

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+{
+  "name": "reactocalc",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "@emotion/react": "^11.11.1",
+    "@emotion/styled": "^11.11.0",
+    "@mui/icons-material": "^5.15.0",
+    "@mui/material": "^5.15.0",
+    "@testing-library/jest-dom": "^5.17.0",
+    "@testing-library/react": "^13.4.0",
+    "@testing-library/user-event": "^13.5.0",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "react-scripts": "5.0.1",
+    "web-vitals": "^2.1.4"
+  },
+  "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"
+    ]
+  }
+}

frontend/public/index.html

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+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <link rel="icon" href="%PUBLIC_URL%/logo120.png" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <meta name="theme-color" content="#000000" />
+    <meta
+      name="description"
+      content="ReactoCalc by Carlos Sousa | A Collection of (sometimes) useful calculators"
+    />
+    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo120.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" />
+    <!--
+      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>ReactoCalc by Carlos Sousa</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

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+{
+  "short_name": "React App",
+  "name": "Create React App Sample",
+  "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",
+  "background_color": "#ffffff"
+}

frontend/public/robots.txt

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+# https://www.robotstxt.org/robotstxt.html
+User-agent: *
+Disallow:

frontend/src/App.css

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+.App {
+  text-align: center;
+}
+
+.App-logo {
+  height: 40vmin;
+  pointer-events: none;
+}
+
+
+
+.largeBoldHeaderPrimary {
+  font-weight: bold;
+  margin-bottom: 0px;
+  color: #4a90e2;
+}
+
+
+.largeBoldHeaderSecondary {
+  font-weight: bold;
+  margin-bottom: 0px;
+  color: #e29c4a;
+}

frontend/src/App.js

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+import './App.css';
+
+import Accordion from '@mui/material/Accordion';
+import AccordionSummary from '@mui/material/AccordionSummary';
+import AccordionDetails from '@mui/material/AccordionDetails';
+import Typography from '@mui/material/Typography';
+import ExpandMoreIcon from '@mui/icons-material/ExpandMore';
+
+import React from 'react';
+import WelcomeText from './components/pages/Welcome';
+import LoanCalculator from './components/LoanCalculator';
+import CompoundInterestCalculator from './components/CompoundInterest';
+
+const accordionStyling = {
+    maxWidth: "600px",
+    margin: "auto",
+    width: "100%"
+}
+
+
+function App() {
+    return (
+        <div className="App">
+            <main>
+                <WelcomeText />
+                <div className="accordions" style={{ display: "flex", flexDirection: "column", alignItems: "center" }}>
+                    <Accordion style={{ ...accordionStyling  }}>
+                        <AccordionSummary
+                            expandIcon={<ExpandMoreIcon />}
+                            aria-controls="panel1a-content"
+                            id="panel1a-header"
+                        >
+                            <Typography className='largeBoldHeaderPrimary'>Loan Calculator</Typography>
+                        </AccordionSummary>
+                        <AccordionDetails>
+                            <LoanCalculator />
+                        </AccordionDetails>
+                    </Accordion>
+                    <Accordion style={{ ...accordionStyling }}>
+                        <AccordionSummary
+                            expandIcon={<ExpandMoreIcon />}
+                            aria-controls="panel1a-content"
+                            id="panel1a-header"
+                        >
+                            <Typography className='largeBoldHeaderSecondary'>Compound Interest</Typography>
+                        </AccordionSummary>
+                        <AccordionDetails>
+                            <CompoundInterestCalculator />
+                        </AccordionDetails>
+                    </Accordion>
+                </div>
+            </main>
+        </div>
+    );
+}
+
+export default App;

frontend/src/App.test.js

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+import { render, screen } from '@testing-library/react';
+import App from './App';
+
+test('renders learn react link', () => {
+  render(<App />);
+  const linkElement = screen.getByText(/learn react/i);
+  expect(linkElement).toBeInTheDocument();
+});

frontend/src/components/CompoundInterest.js

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+import React, { useState } from 'react';
+import { Typography, Button, TextField } from '@mui/material';
+
+import '../App.css';
+
+import ResultDisplay from './common/ResultDisplay';
+
+// Div Class Names
+const divMainClassName = "CompoundCalculator";
+const divFieldsClassName = "numberFields";
+
+// Title & Headlines
+const titleText = "Compound Interest";
+const usedFormulaInitialInvestment = "A = P(1 + r/n)^nt";
+const usedFormulaInitialInvestmentExplanation = "A = Future Investment, including interest | P = Initial Deposit | r = annual interest rate (decimal) | n = number of compound per year | t = investement term, in years";
+const usedFormulaRegularContributions = "S = PMT x (((1 + r/n)^nt-1)/(r/n))";
+const usedFormulaRegularContributionsExplanation = "S = Future Value of Contributions | PMT = Regular Contribution per period";
+const usedFormulaTotalFutureValue = "Total Future Value = A + S";
+
+// Field Values
+const initialInvestmentPlaceholder = 'Initial Investment (€)';
+const monthlyContributionPlaceholder = 'Monthly Contribution (€)';
+const annualInterestRatePlaceholder = 'Annual Interest Rate (%)';
+const compoundsPerYearPlaceholder = 'Compounds per Year';
+const investmentTermPlaceholder = 'Investment Term (Years)';
+
+
+
+function calculateCompoundInterest(P, r, n, t) {
+    return P * Math.pow(1 + r / n, n * t);
+}
+
+
+function calculateCompoundInterestWithContributions(PMT, r, n, t) {
+    let S = PMT * ((Math.pow(1 + r / n, n * t) - 1) / (r / n));
+    return S;
+}
+
+
+
+function CompoundInterestCalculator(){
+    const [initialInvestment, setInitialInvestment] = useState('');
+    const [monthlyContribution, setMonthlyContribution] = useState('');
+    const [annualInterestRate, setAnnualInterestRate] = useState('');
+    const [compoundsPerYear, setCompoundsPerYear] = useState('');
+    const [investmentTerm, setInvestmentTerm] = useState('');
+    const [InitialInvestmentCompound, setInitialInvestmentCompound] = useState(null);
+    const [ContributionsInvestmentCompound, setContributionsInvestmentCompound] = useState(null);
+    const [TotalCompound, setTotalCompound] = useState(null);
+    const [TotalCompoundPlus2, setTotalCompoundPlus2] = useState(null);
+    const [TotalCompoundMinus2, setTotalCompoundMinus2] = useState(null);
+
+    const handleCalculation = () => {
+        const P = Number(initialInvestment);
+        const PMT = Number(monthlyContribution);
+        const r = Number(annualInterestRate) / 100;
+        const n = Number(compoundsPerYear);
+        const t = Number(investmentTerm);
+
+        const A = calculateCompoundInterest(P, r, n, t);
+        const S = calculateCompoundInterestWithContributions(PMT, r, n, t);
+        const totalCompounded = A + S;
+
+        const APlus2 = calculateCompoundInterest(P, (r + 0.02), n, t);
+        const SPlus2 = calculateCompoundInterestWithContributions(PMT, (r + 0.02), n, t);
+
+        const totalCompoundedPlus2 = APlus2 + SPlus2;
+
+        const AMinus2 = calculateCompoundInterest(P, (r - 0.02), n, t);
+        const SMinus2 = calculateCompoundInterestWithContributions(PMT, (r - 0.02), n, t);
+
+        const totalCompoundedMinus2 = AMinus2 + SMinus2;
+
+        setInitialInvestmentCompound({
+            text: 'Initial Investment Compounded',
+            value: Number(A).toFixed(2)
+        });
+
+        setContributionsInvestmentCompound({
+            text: 'Monthly Contributions Compounded',
+            value: Number(S).toFixed(2)
+        });
+
+        setTotalCompound({
+            text: 'Total Compounded',
+            value: Number(totalCompounded).toFixed(2)
+        });
+
+        setTotalCompoundPlus2({
+            text: 'Total Compounded (+2.00% speculation)',
+            value: Number(totalCompoundedPlus2).toFixed(2)
+        });
+
+        setTotalCompoundMinus2({
+            text: 'Total Compounded (-2.00% speculation)',
+            value: Number(totalCompoundedMinus2).toFixed(2)
+        });
+       
+    };
+
+    return( 
+        <div className={ divMainClassName }>
+            
+            <Typography variant="h4" className='largeBoldHeaderSecondary'>{ titleText }</Typography>
+            <Typography variant="subtitle1">{ usedFormulaTotalFutureValue }</Typography>
+            <Typography variant="subtitle1">{ usedFormulaInitialInvestment }</Typography>
+            <Typography variant="subtitle1">{ usedFormulaRegularContributions }</Typography>
+            <Typography variant="subtitle1">{ usedFormulaInitialInvestmentExplanation }</Typography>
+            <Typography variant="subtitle1">{ usedFormulaRegularContributionsExplanation }</Typography>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={ initialInvestment }
+                onChange={(e) => setInitialInvestment(e.target.value)}
+                label={ initialInvestmentPlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={ monthlyContribution }
+                onChange={(e) => setMonthlyContribution(e.target.value)}
+                label={ monthlyContributionPlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={ annualInterestRate }
+                onChange={(e) => setAnnualInterestRate(e.target.value)}
+                label={ annualInterestRatePlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={ compoundsPerYear }
+                onChange={(e) => setCompoundsPerYear(e.target.value)}
+                label={ compoundsPerYearPlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={ investmentTerm }
+                onChange={(e) => setInvestmentTerm(e.target.value)}
+                label={ investmentTermPlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <Button variant="text" onClick={handleCalculation}>Calculate Compound Interest</Button>
+                {ContributionsInvestmentCompound !== null && <ResultDisplay result={ ContributionsInvestmentCompound } />}
+                {InitialInvestmentCompound !== null && <ResultDisplay result={ InitialInvestmentCompound } />}
+                {TotalCompound !== null && <ResultDisplay result={ TotalCompound } />}
+                {TotalCompoundPlus2 !== null && <ResultDisplay result={ TotalCompoundPlus2 } />}
+                {TotalCompoundMinus2 !== null && <ResultDisplay result={ TotalCompoundMinus2 } />}
+            </div>
+        </div>
+    )
+}
+
+export default CompoundInterestCalculator;

frontend/src/components/LoanCalculator.js

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+import React, { useState } from 'react';
+import { Typography, Button, TextField } from '@mui/material';
+import '../App.css';
+
+import ResultDisplay from './common/ResultDisplay';
+
+// Div Class Names
+const divMainClassName = "LoanCalculator";
+const divFieldsClassName = "numberFields"
+
+// Title & Headlines
+const titleText = "Loan Calculator";
+const usedFormula = "Monthly Payment = X * ((Y / 12) / (1 - (1+Y / 12)^(-12Z)))";
+const userFormulaExplanation = "X = Loan Amount | Y = Annual Interest Rate (in Decimal) | Z = Loan Terms in Years";
+
+// Field Values
+const loanAmountFieldPlaceholder = 'Loan Amount (€)';
+const annualInterestRatePlaceholder = 'Annual Interest Rate (%)';
+const loanTermYearsPlaceholder = 'Loan Term (Years)';
+
+
+function LoanCalculator(){
+    const [loanAmount, setloanAmount] = useState('');
+    const [annualInterestRate, setannualInterestRate] = useState('');
+    const [loanTerm, setloanTerm] = useState('');
+    const [MonthlyPayment, setMonthlyPayment] = useState(null);
+    const [TotalRepayment, setTotalRepayment] = useState(null);
+
+    const handleCalculation = () => {
+        const loanAmountNumber = Number(loanAmount);
+        const loanTermNumber = Number(loanTerm);
+        const annualInterestRateDecimal = Number(annualInterestRate) / 100;
+
+        const monthlyPayment = loanAmountNumber * (annualInterestRateDecimal / 12) / (1 - Math.pow((1 + annualInterestRateDecimal / 12), (-12 * loanTermNumber)));
+
+        const totalRepaymentCalculated = Number(monthlyPayment) * 12 * loanTermNumber;
+
+        setMonthlyPayment({
+            text: 'Monthly Payment',
+            value: Number(monthlyPayment).toFixed(2)
+        });
+
+        setTotalRepayment({
+            text: 'Total Repayment',
+            value: Number(totalRepaymentCalculated).toFixed(2)
+        });
+    };
+
+    return( 
+        <div className={ divMainClassName }>
+            
+            <Typography variant="h4" className='largeBoldHeaderPrimary'>{ titleText }</Typography>
+            <Typography variant="subtitle1">{ usedFormula }</Typography>
+            <Typography variant="subtitle1">{ userFormulaExplanation }</Typography>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={loanAmount}
+                onChange={(e) => setloanAmount(e.target.value)}
+                label={ loanAmountFieldPlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={annualInterestRate}
+                onChange={(e) => setannualInterestRate(e.target.value)}
+                label={ annualInterestRatePlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <TextField
+                value={loanTerm}
+                onChange={(e) => setloanTerm(e.target.value)}
+                label={ loanTermYearsPlaceholder }
+                variant="filled"
+                />
+            </div>
+            <div className={ divFieldsClassName }>
+                <Button variant="text" onClick={handleCalculation}>Calculate Monthly Payment</Button>
+                {MonthlyPayment !== null && <ResultDisplay result={MonthlyPayment} />}
+                {TotalRepayment !== null && <ResultDisplay result={TotalRepayment} />}
+            </div>
+        </div>
+    )
+}
+
+export default LoanCalculator;

frontend/src/components/common/NumberInput.js

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+import React from 'react';
+
+function NumberInput({ value, onChange, placeholder }) {
+  return (
+    <input
+      type="number"
+      value={value}
+      onChange={onChange}
+      placeholder={placeholder}
+    />
+  );
+}
+
+export default NumberInput;

frontend/src/components/common/ResultDisplay.js

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+import React from 'react';
+
+function ResultDisplay({ result }) {
+  return <h3>{result.text }: {result.value }</h3>;
+}
+
+export default ResultDisplay;

frontend/src/components/pages/Welcome.js

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+import React from 'react';
+import { Typography } from '@mui/material';
+
+const sectionID = 'welcome';
+
+function WelcomeText(){
+    return (
+        <div style={{ margin: '20px' }}>
+            <section id={ sectionID }>
+                    <Typography variant="h3" style={{color: "#839D0D"}}>
+                        ReactoCalc
+                    </Typography>
+                    <Typography variant="subtitle1" color="inherit" noWrap>
+                        A collection of (sometimes) useful calculators
+                    </Typography>
+                </section>
+        </div>
+    )
+}
+
+export default WelcomeText;

frontend/src/index.css

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+body {
+  margin: 0;
+  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
+    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
+    sans-serif;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+}
+
+code {
+  font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
+    monospace;
+}

frontend/src/index.js

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+import React from 'react';
+import ReactDOM from 'react-dom/client';
+import './index.css';
+import App from './App';
+import reportWebVitals from './reportWebVitals';
+
+const root = ReactDOM.createRoot(document.getElementById('root'));
+root.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>
+);
+
+// If you want to start measuring performance in your app, pass a function
+// to log results (for example: reportWebVitals(console.log))
+// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
+reportWebVitals();

frontend/src/logo.svg

@@ -0,0 +1 @@
+<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/reportWebVitals.js

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+const reportWebVitals = onPerfEntry => {
+  if (onPerfEntry && onPerfEntry instanceof Function) {
+    import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
+      getCLS(onPerfEntry);
+      getFID(onPerfEntry);
+      getFCP(onPerfEntry);
+      getLCP(onPerfEntry);
+      getTTFB(onPerfEntry);
+    });
+  }
+};
+
+export default reportWebVitals;

frontend/src/setupTests.js

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+// jest-dom adds custom jest matchers for asserting on DOM nodes.
+// 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';