From da3b69064573fe47d1cc05fdcffad7e6569f8a38 Mon Sep 17 00:00:00 2001 From: Matt Dunn-Rankin Date: Sat, 25 Apr 2020 23:10:07 -0700 Subject: [PATCH] remove some leftover create-react-app boilerplate --- src/index.js | 17 ++---- src/serviceWorker.js | 141 ------------------------------------------- src/setupTests.js | 5 -- 3 files changed, 5 insertions(+), 158 deletions(-) delete mode 100644 src/serviceWorker.js delete mode 100644 src/setupTests.js diff --git a/src/index.js b/src/index.js index f5185c1..d4e8591 100644 --- a/src/index.js +++ b/src/index.js @@ -1,17 +1,10 @@ -import React from 'react'; -import ReactDOM from 'react-dom'; -import './index.css'; -import App from './App'; -import * as serviceWorker from './serviceWorker'; - +import React from "react"; +import ReactDOM from "react-dom"; +import "./index.css"; +import App from "./App"; ReactDOM.render( , - document.getElementById('root') + 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: https://bit.ly/CRA-PWA -serviceWorker.unregister(); diff --git a/src/serviceWorker.js b/src/serviceWorker.js deleted file mode 100644 index b04b771..0000000 --- a/src/serviceWorker.js +++ /dev/null @@ -1,141 +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(); - }) - .catch(error => { - console.error(error.message); - }); - } -} diff --git a/src/setupTests.js b/src/setupTests.js deleted file mode 100644 index 74b1a27..0000000 --- a/src/setupTests.js +++ /dev/null @@ -1,5 +0,0 @@ -// 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/extend-expect';