├── public
    ├── robots.txt
    ├── favicon.ico
    ├── logo192.png
    ├── logo512.png
    ├── manifest.json
    └── index.html
├── doc
    └── screenshot.png
├── src
    ├── setupTests.js
    ├── App.test.js
    ├── index.css
    ├── reportWebVitals.js
    ├── index.js
    ├── App.js
    ├── App.css
    ├── gitInfo.js
    └── logo.svg
├── .gitignore
├── README.md
└── package.json


/public/robots.txt:
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1 | # https://www.robotstxt.org/robotstxt.html
2 | User-agent: *
3 | Disallow:
4 | 


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/doc/screenshot.png:
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https://raw.githubusercontent.com/zwbetz-gh/create-react-app-show-current-git-branch-and-commit-hash-from-any-os/main/doc/screenshot.png


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/public/favicon.ico:
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https://raw.githubusercontent.com/zwbetz-gh/create-react-app-show-current-git-branch-and-commit-hash-from-any-os/main/public/favicon.ico


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/public/logo192.png:
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https://raw.githubusercontent.com/zwbetz-gh/create-react-app-show-current-git-branch-and-commit-hash-from-any-os/main/public/logo192.png


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/public/logo512.png:
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https://raw.githubusercontent.com/zwbetz-gh/create-react-app-show-current-git-branch-and-commit-hash-from-any-os/main/public/logo512.png


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/src/setupTests.js:
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1 | // jest-dom adds custom jest matchers for asserting on DOM nodes.
2 | // allows you to do things like:
3 | // expect(element).toHaveTextContent(/react/i)
4 | // learn more: https://github.com/testing-library/jest-dom
5 | import '@testing-library/jest-dom';
6 | 


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/src/App.test.js:
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1 | import { render, screen } from '@testing-library/react';
2 | import App from './App';
3 | 
4 | test('renders learn react link', () => {
5 |   render(<App />);
6 |   const linkElement = screen.getByText(/learn react/i);
7 |   expect(linkElement).toBeInTheDocument();
8 | });
9 | 


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/src/index.css:
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 1 | body {
 2 |   margin: 0;
 3 |   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
 4 |     'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
 5 |     sans-serif;
 6 |   -webkit-font-smoothing: antialiased;
 7 |   -moz-osx-font-smoothing: grayscale;
 8 | }
 9 | 
10 | code {
11 |   font-family: source-code-pro, Menlo, Monaco, Consolas, 'Courier New',
12 |     monospace;
13 | }
14 | 


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/src/reportWebVitals.js:
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 1 | const reportWebVitals = onPerfEntry => {
 2 |   if (onPerfEntry && onPerfEntry instanceof Function) {
 3 |     import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {
 4 |       getCLS(onPerfEntry);
 5 |       getFID(onPerfEntry);
 6 |       getFCP(onPerfEntry);
 7 |       getLCP(onPerfEntry);
 8 |       getTTFB(onPerfEntry);
 9 |     });
10 |   }
11 | };
12 | 
13 | export default reportWebVitals;
14 | 


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/.gitignore:
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 1 | # See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
 2 | 
 3 | # dependencies
 4 | /node_modules
 5 | /.pnp
 6 | .pnp.js
 7 | 
 8 | # testing
 9 | /coverage
10 | 
11 | # production
12 | /build
13 | 
14 | # misc
15 | .DS_Store
16 | .env.local
17 | .env.development.local
18 | .env.test.local
19 | .env.production.local
20 | 
21 | npm-debug.log*
22 | yarn-debug.log*
23 | yarn-error.log*
24 | 
25 | local_git_config.sh
26 | src/generatedGitInfo.json
27 | 


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/src/index.js:
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 1 | import React from 'react';
 2 | import ReactDOM from 'react-dom';
 3 | import './index.css';
 4 | import App from './App';
 5 | import reportWebVitals from './reportWebVitals';
 6 | 
 7 | ReactDOM.render(
 8 |   <React.StrictMode>
 9 |     <App />
10 |   </React.StrictMode>,
11 |   document.getElementById('root')
12 | );
13 | 
14 | // If you want to start measuring performance in your app, pass a function
15 | // to log results (for example: reportWebVitals(console.log))
16 | // or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
17 | reportWebVitals();
18 | 


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/public/manifest.json:
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 1 | {
 2 |   "short_name": "React App",
 3 |   "name": "Create React App Sample",
 4 |   "icons": [
 5 |     {
 6 |       "src": "favicon.ico",
 7 |       "sizes": "64x64 32x32 24x24 16x16",
 8 |       "type": "image/x-icon"
 9 |     },
10 |     {
11 |       "src": "logo192.png",
12 |       "type": "image/png",
13 |       "sizes": "192x192"
14 |     },
15 |     {
16 |       "src": "logo512.png",
17 |       "type": "image/png",
18 |       "sizes": "512x512"
19 |     }
20 |   ],
21 |   "start_url": ".",
22 |   "display": "standalone",
23 |   "theme_color": "#000000",
24 |   "background_color": "#ffffff"
25 | }
26 | 


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/README.md:
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 1 | # Create React App: Show Current Git Branch and Commit Hash From Any OS
 2 | 
 3 | This project was bootstrapped with [Create React App](https://github.com/facebook/create-react-app).
 4 | 
 5 | ## Sister Links
 6 | 
 7 | - **Article:** <https://zwbetz.com/create-react-app-show-current-git-branch-and-commit-hash-from-any-os/>
 8 | 
 9 | ## Run it
10 | 
11 | 1. Install NodeJS version 12 or higher
12 | 1. Run `npm install`
13 | 1. Run `npm start`
14 | 
15 | ## Relevant Files
16 | 
17 | - `package.json`
18 | - `src/gitInfo.js`
19 | - `src/App.js`
20 | 
21 | ## Screenshot
22 | 
23 | ![Screenshot of the app](doc/screenshot.png)
24 | 
25 | **Note:** The git commit hash in this screenshot will likely be an old one.
26 | 


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/src/App.js:
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 1 | import logo from './logo.svg';
 2 | import './App.css';
 3 | import generatedGitInfo from './generatedGitInfo.json';
 4 | 
 5 | function App() {
 6 |   return (
 7 |     <div className="App">
 8 |       <header className="App-header">
 9 |         <img src={logo} className="App-logo" alt="logo" />
10 |         <div className="git-info">
11 |           <p>
12 |             <strong>Git Branch:</strong>{' '}
13 |             <code>{generatedGitInfo.gitBranch}</code>
14 |           </p>
15 |           <p>
16 |             <strong>Git Commit Hash:</strong>{' '}
17 |             <code>{generatedGitInfo.gitCommitHash}</code>
18 |           </p>
19 |         </div>
20 |       </header>
21 |     </div>
22 |   );
23 | }
24 | 
25 | export default App;
26 | 


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/src/App.css:
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 1 | .App {
 2 |   text-align: center;
 3 | }
 4 | 
 5 | .App-logo {
 6 |   height: 40vmin;
 7 |   pointer-events: none;
 8 | }
 9 | 
10 | @media (prefers-reduced-motion: no-preference) {
11 |   .App-logo {
12 |     animation: App-logo-spin infinite 20s linear;
13 |   }
14 | }
15 | 
16 | .App-header {
17 |   background-color: #282c34;
18 |   min-height: 100vh;
19 |   display: flex;
20 |   flex-direction: column;
21 |   align-items: center;
22 |   justify-content: center;
23 |   font-size: calc(10px + 2vmin);
24 |   color: white;
25 | }
26 | 
27 | .App-link {
28 |   color: #61dafb;
29 | }
30 | 
31 | @keyframes App-logo-spin {
32 |   from {
33 |     transform: rotate(0deg);
34 |   }
35 |   to {
36 |     transform: rotate(360deg);
37 |   }
38 | }
39 | 
40 | .git-info {
41 |   text-align: left;
42 | }
43 | 


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/src/gitInfo.js:
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 1 | const fs = require('fs');
 2 | const path = require('path');
 3 | const {execSync} = require('child_process');
 4 | 
 5 | const execSyncWrapper = (command) => {
 6 |   let stdout = null;
 7 |   try {
 8 |     stdout = execSync(command).toString().trim();
 9 |   } catch (error) {
10 |     console.error(error);
11 |   }
12 |   return stdout;
13 | };
14 | 
15 | const main = () => {
16 |   let gitBranch = execSyncWrapper('git rev-parse --abbrev-ref HEAD');
17 |   let gitCommitHash = execSyncWrapper('git rev-parse --short=7 HEAD');
18 | 
19 |   const obj = {
20 |     gitBranch,
21 |     gitCommitHash
22 |   };
23 | 
24 |   const filePath = path.resolve('src', 'generatedGitInfo.json');
25 |   const fileContents = JSON.stringify(obj, null, 2);
26 | 
27 |   fs.writeFileSync(filePath, fileContents);
28 |   console.log(`Wrote the following contents to ${filePath}\n${fileContents}`);
29 | };
30 | 
31 | main();
32 | 


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/package.json:
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 1 | {
 2 |   "name": "my-app",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "@testing-library/jest-dom": "^5.14.1",
 7 |     "@testing-library/react": "^11.2.7",
 8 |     "@testing-library/user-event": "^12.8.3",
 9 |     "react": "^17.0.2",
10 |     "react-dom": "^17.0.2",
11 |     "react-scripts": "4.0.3",
12 |     "web-vitals": "^1.1.2"
13 |   },
14 |   "scripts": {
15 |     "git-info": "node src/gitInfo.js",
16 |     "start": "npm run git-info && react-scripts start",
17 |     "build": "npm run git-info && react-scripts build",
18 |     "test": "npm run git-info && react-scripts test",
19 |     "eject": "react-scripts eject"
20 |   },
21 |   "eslintConfig": {
22 |     "extends": [
23 |       "react-app",
24 |       "react-app/jest"
25 |     ]
26 |   },
27 |   "browserslist": {
28 |     "production": [
29 |       ">0.2%",
30 |       "not dead",
31 |       "not op_mini all"
32 |     ],
33 |     "development": [
34 |       "last 1 chrome version",
35 |       "last 1 firefox version",
36 |       "last 1 safari version"
37 |     ]
38 |   }
39 | }
40 | 


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/public/index.html:
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 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8" />
 5 |     <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
 6 |     <meta name="viewport" content="width=device-width, initial-scale=1" />
 7 |     <meta name="theme-color" content="#000000" />
 8 |     <meta
 9 |       name="description"
10 |       content="Web site created using create-react-app"
11 |     />
12 |     <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
13 |     <!--
14 |       manifest.json provides metadata used when your web app is installed on a
15 |       user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/
16 |     -->
17 |     <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
18 |     <!--
19 |       Notice the use of %PUBLIC_URL% in the tags above.
20 |       It will be replaced with the URL of the `public` folder during the build.
21 |       Only files inside the `public` folder can be referenced from the HTML.
22 | 
23 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
24 |       work correctly both with client-side routing and a non-root public URL.
25 |       Learn how to configure a non-root public URL by running `npm run build`.
26 |     -->
27 |     <title>React App</title>
28 |   </head>
29 |   <body>
30 |     <noscript>You need to enable JavaScript to run this app.</noscript>
31 |     <div id="root"></div>
32 |     <!--
33 |       This HTML file is a template.
34 |       If you open it directly in the browser, you will see an empty page.
35 | 
36 |       You can add webfonts, meta tags, or analytics to this file.
37 |       The build step will place the bundled scripts into the <body> tag.
38 | 
39 |       To begin the development, run `npm start` or `yarn start`.
40 |       To create a production bundle, use `npm run build` or `yarn build`.
41 |     -->
42 |   </body>
43 | </html>
44 | 


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/src/logo.svg:
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