Unverified Commit 53fdc234 authored by Rémy Huet's avatar Rémy Huet 💻
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Initial commit

# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
# dependencies
# testing
# production
# misc
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"name": "web-app",
"version": "0.1.0",
"private": true,
"dependencies": {
"react": "^16.5.2",
"react-dom": "^16.5.2",
"react-scripts": "2.0.5"
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test",
"eject": "react-scripts eject"
"eslintConfig": {
"extends": "react-app"
"browserslist": [
"not dead",
"not ie <= 11",
"not op_mini all"
<!DOCTYPE html>
<html lang="en">
<meta charset="utf-8">
<link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="theme-color" content="#000000">
manifest.json provides metadata used when your web app is added to the
homescreen on Android. 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>React App</title>
You need to enable JavaScript to run this app.
<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`.
"short_name": "React App",
"name": "Create React App Sample",
"icons": [
"src": "favicon.ico",
"sizes": "64x64 32x32 24x24 16x16",
"type": "image/x-icon"
"start_url": ".",
"display": "standalone",
"theme_color": "#000000",
"background_color": "#ffffff"
import React, { Component } from 'react';
class App extends Component {
render() {
return (
<div className="App">
export default App;
import React from 'react';
import ReactDOM from 'react-dom';
import App from './App';
import * as serviceWorker from './serviceWorker';
ReactDOM.render(<App />, document.getElementById('root'));
// If you want your app to work offline and load faster, you can change
// unregister() to register() below. Note this comes with some pitfalls.
// Learn more about service workers: http://bit.ly/CRA-PWA
\ No newline at end of file
// 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 http://bit.ly/CRA-PWA.
const isLocalhost = Boolean(
window.location.hostname === 'localhost' ||
// [::1] is the IPv6 localhost address.
window.location.hostname === '[::1]' ||
// is considered localhost for IPv4.
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);
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
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(() => {
'This web app is being served cache-first by a service ' +
'worker. To learn more, visit http://bit.ly/CRA-PWA'
} else {
// Is not localhost. Just register service worker
registerValidSW(swUrl, config);
function registerValidSW(swUrl, config) {
.then(registration => {
registration.onupdatefound = () => {
const installingWorker = registration.installing;
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.
'New content is available and will be used when all ' +
'tabs for this page are closed. See http://bit.ly/CRA-PWA.'
// Execute callback
if (config && config.onUpdate) {
} 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) {
.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.
.then(response => {
// Ensure service worker exists, and that we really are getting a JS file.
if (
response.status === 404 ||
response.headers.get('content-type').indexOf('javascript') === -1
) {
// No service worker found. Probably a different app. Reload the page.
navigator.serviceWorker.ready.then(registration => {
registration.unregister().then(() => {
} else {
// Service worker found. Proceed as normal.
registerValidSW(swUrl, config);
.catch(() => {
'No internet connection found. App is running in offline mode.'
export function unregister() {
if ('serviceWorker' in navigator) {
navigator.serviceWorker.ready.then(registration => {
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