├── .prettierrc
├── public
    ├── favicon.ico
    ├── manifest.json
    └── index.html
├── .travis.yml
├── src
    ├── test
    │   ├── setup.js
    │   ├── client-mock.js
    │   └── schema.js
    ├── App.css
    ├── index.js
    ├── client.js
    ├── App.test.js
    ├── App.js
    └── registerServiceWorker.js
├── .gitignore
├── .github
    └── FUNDING.yml
├── package.json
└── README.md


/.prettierrc:
--------------------------------------------------------------------------------
1 | {
2 |   "semi": true,
3 |   "trailingComma": "all",
4 |   "singleQuote": true,
5 |   "printWidth": 70,
6 | }


--------------------------------------------------------------------------------
/public/favicon.ico:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/the-road-to-graphql/react-apollo-client-testing-example/HEAD/public/favicon.ico


--------------------------------------------------------------------------------
/.travis.yml:
--------------------------------------------------------------------------------
 1 | language: node_js
 2 | 
 3 | node_js:
 4 |   - stable
 5 | 
 6 | install:
 7 |   - npm install
 8 | 
 9 | script:
10 |   - npm test
11 | 


--------------------------------------------------------------------------------
/src/test/setup.js:
--------------------------------------------------------------------------------
1 | import Adapter from 'enzyme-adapter-react-16';
2 | import { configure } from 'enzyme';
3 | 
4 | configure({ adapter: new Adapter() });
5 | 


--------------------------------------------------------------------------------
/src/App.css:
--------------------------------------------------------------------------------
 1 | .row {
 2 |   padding: 5px;
 3 | }
 4 | 
 5 | .row:hover {
 6 |   background-color: lightblue;
 7 | }
 8 | 
 9 | .row_selected {
10 |   background-color: orange;
11 | }
12 | 
13 | .row_selected:hover {
14 |   background-color: orange;
15 | }
16 | 


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


--------------------------------------------------------------------------------
/public/manifest.json:
--------------------------------------------------------------------------------
 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 |   "start_url": "./index.html",
12 |   "display": "standalone",
13 |   "theme_color": "#000000",
14 |   "background_color": "#ffffff"
15 | }
16 | 


--------------------------------------------------------------------------------
/src/index.js:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import ReactDOM from 'react-dom';
 3 | import { ApolloProvider } from 'react-apollo';
 4 | 
 5 | import App from './App';
 6 | import client from './client';
 7 | 
 8 | import registerServiceWorker from './registerServiceWorker';
 9 | 
10 | ReactDOM.render(
11 |   <ApolloProvider client={client}>
12 |     <App />
13 |   </ApolloProvider>,
14 |   document.getElementById('root'),
15 | );
16 | 
17 | registerServiceWorker();
18 | 


--------------------------------------------------------------------------------
/src/client.js:
--------------------------------------------------------------------------------
 1 | import { ApolloClient } from 'apollo-client';
 2 | import { HttpLink } from 'apollo-link-http';
 3 | import { InMemoryCache } from 'apollo-cache-inmemory';
 4 | 
 5 | const cache = new InMemoryCache();
 6 | 
 7 | const GITHUB_BASE_URL = 'https://api.github.com/graphql';
 8 | 
 9 | const httpLink = new HttpLink({
10 |   uri: GITHUB_BASE_URL,
11 |   headers: {
12 |     authorization: `Bearer ${
13 |       process.env.REACT_APP_GITHUB_PERSONAL_ACCESS_TOKEN
14 |     }`,
15 |   },
16 | });
17 | 
18 | export default new ApolloClient({
19 |   link: httpLink,
20 |   cache,
21 | });
22 | 


--------------------------------------------------------------------------------
/.github/FUNDING.yml:
--------------------------------------------------------------------------------
 1 | # These are supported funding model platforms
 2 | 
 3 | github: rwieruch
 4 | patreon: # rwieruch
 5 | open_collective: # Replace with a single Open Collective username
 6 | ko_fi: # Replace with a single Ko-fi username
 7 | tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
 8 | community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
 9 | liberapay: # Replace with a single Liberapay username
10 | issuehunt: # Replace with a single IssueHunt username
11 | otechie: # Replace with a single Otechie username
12 | custom: # Replace with a single custom sponsorship URL
13 | 


--------------------------------------------------------------------------------
/src/test/client-mock.js:
--------------------------------------------------------------------------------
 1 | import { ApolloClient } from 'apollo-client';
 2 | import { InMemoryCache } from 'apollo-cache-inmemory';
 3 | import { SchemaLink } from 'apollo-link-schema';
 4 | import { makeExecutableSchema } from 'graphql-tools';
 5 | 
 6 | import { schema, resolvers } from './schema';
 7 | 
 8 | const cache = new InMemoryCache();
 9 | 
10 | const executableSchema = makeExecutableSchema({
11 |   typeDefs: schema,
12 |   resolvers,
13 |   resolverValidationOptions: {
14 |     requireResolversForResolveType: false,
15 |   },
16 | });
17 | 
18 | export default new ApolloClient({
19 |   link: new SchemaLink({ schema: executableSchema }),
20 |   cache,
21 | });
22 | 


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "name": "react-apollo-client-testing-example",
 3 |   "version": "0.1.0",
 4 |   "private": true,
 5 |   "dependencies": {
 6 |     "apollo-cache-inmemory": "^1.3.6",
 7 |     "apollo-client": "^2.4.3",
 8 |     "apollo-link-http": "^1.5.5",
 9 |     "apollo-link-schema": "^1.1.1",
10 |     "graphql": "^14.0.2",
11 |     "graphql-tag": "^2.10.0",
12 |     "graphql-tools": "^4.0.2",
13 |     "react": "^16.6.0",
14 |     "react-apollo": "^2.2.4",
15 |     "react-dom": "^16.6.0",
16 |     "react-scripts": "3.1.0"
17 |   },
18 |   "scripts": {
19 |     "start": "react-scripts start",
20 |     "build": "react-scripts build",
21 |     "test": "react-scripts test --env=jsdom",
22 |     "eject": "react-scripts eject"
23 |   },
24 |   "devDependencies": {
25 |     "enzyme": "^3.7.0",
26 |     "enzyme-adapter-react-16": "^1.6.0",
27 |     "sinon": "^7.0.0"
28 |   },
29 |   "browserslist": [
30 |     ">0.2%",
31 |     "not dead",
32 |     "not ie <= 11",
33 |     "not op_mini all"
34 |   ]
35 | }
36 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # react-apollo-client-testing-example
 2 | 
 3 | [![Build Status](https://travis-ci.org/the-road-to-graphql/react-apollo-client-testing-example.svg?branch=master)](https://travis-ci.org/the-road-to-graphql/react-apollo-client-testing-example) [![Slack](https://slack-the-road-to-learn-react.wieruch.com/badge.svg)](https://slack-the-road-to-learn-react.wieruch.com/) [![Greenkeeper badge](https://badges.greenkeeper.io/the-road-to-graphql/react-apollo-client-testing-example.svg)](https://greenkeeper.io/)
 4 | 
 5 | A minimal React application using Apollo Client with a **mocked** GitHub's GraphQL API by implementing an own GraphQL schema. [Read more about it here.](https://www.robinwieruch.de/graphql-server-mock-apollo-client/) In addition, it uses the mocked GraphQL server to conduct tests for Apollo's Query and Mutation components. [Read more about it here.](https://www.robinwieruch.de/react-apollo-client-testing)
 6 | 
 7 | ## Installation
 8 | 
 9 | * `git clone git@github.com:the-road-to-graphql/react-apollo-client-testing-example.git`
10 | * cd react-apollo-client-testing-example
11 | * npm install
12 | * [add your own REACT_APP_GITHUB_PERSONAL_ACCESS_TOKEN in .env file](https://help.github.com/articles/creating-a-personal-access-token-for-the-command-line/)
13 |   * scopes/permissions you need to check: admin:org, repo, user, notifications
14 | * npm test
15 | 
16 | ## Want to learn more about React + GraphQL + Apollo?
17 | 
18 | * Don't miss [upcoming Tutorials and Courses](https://www.getrevue.co/profile/rwieruch)
19 | * Check out current [React Courses](https://roadtoreact.com)
20 | 


--------------------------------------------------------------------------------
/public/index.html:
--------------------------------------------------------------------------------
 1 | <!DOCTYPE html>
 2 | <html lang="en">
 3 |   <head>
 4 |     <meta charset="utf-8">
 5 |     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
 6 |     <meta name="theme-color" content="#000000">
 7 |     <!--
 8 |       manifest.json provides metadata used when your web app is added to the
 9 |       homescreen on Android. See https://developers.google.com/web/fundamentals/engage-and-retain/web-app-manifest/
10 |     -->
11 |     <link rel="manifest" href="%PUBLIC_URL%/manifest.json">
12 |     <link rel="shortcut icon" href="%PUBLIC_URL%/favicon.ico">
13 |     <!--
14 |       Notice the use of %PUBLIC_URL% in the tags above.
15 |       It will be replaced with the URL of the `public` folder during the build.
16 |       Only files inside the `public` folder can be referenced from the HTML.
17 | 
18 |       Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
19 |       work correctly both with client-side routing and a non-root public URL.
20 |       Learn how to configure a non-root public URL by running `npm run build`.
21 |     -->
22 |     <title>React App</title>
23 |   </head>
24 |   <body>
25 |     <noscript>
26 |       You need to enable JavaScript to run this app.
27 |     </noscript>
28 |     <div id="root"></div>
29 |     <!--
30 |       This HTML file is a template.
31 |       If you open it directly in the browser, you will see an empty page.
32 | 
33 |       You can add webfonts, meta tags, or analytics to this file.
34 |       The build step will place the bundled scripts into the <body> tag.
35 | 
36 |       To begin the development, run `npm start` or `yarn start`.
37 |       To create a production bundle, use `npm run build` or `yarn build`.
38 |     -->
39 |   </body>
40 | </html>
41 | 


--------------------------------------------------------------------------------
/src/test/schema.js:
--------------------------------------------------------------------------------
 1 | export const schema = `
 2 |   type Query {
 3 |     organization(login: String!): Organization!
 4 |   }
 5 | 
 6 |   interface Starrable {
 7 |     id: ID!
 8 |     viewerHasStarred: Boolean!
 9 |   }
10 | 
11 |   type Organization {
12 |     name: String!
13 |     url: String!
14 |     repositories: RepositoryConnection!
15 |   }
16 | 
17 |   type RepositoryConnection {
18 |     edges: [RepositoryEdge!]!
19 |   }
20 | 
21 |   type RepositoryEdge {
22 |     node: Repository!
23 |   }
24 | 
25 |   type Repository implements Starrable {
26 |     id: ID!
27 |     name: String!
28 |     url: String!
29 |     viewerHasStarred: Boolean!
30 |   }
31 | 
32 |   type Mutation {
33 |     addStar(input: AddStarInput!): AddStarPayload!
34 |   }
35 | 
36 |   input AddStarInput {
37 |     starrableId: ID!
38 |   }
39 | 
40 |   type AddStarPayload {
41 |     starrable: Starrable!
42 |   }
43 | `;
44 | 
45 | export const resolvers = {
46 |   Query: {
47 |     organization: (parent, { login }) => ({
48 |       name: login,
49 |       url: `https://github.com/${login}`,
50 |       repositories: {
51 |         edges: [
52 |           {
53 |             node: {
54 |               id: '1',
55 |               name: 'the-road-to-learn-react',
56 |               url: `https://github.com/${login}/the-road-to-learn-react`,
57 |               viewerHasStarred: false,
58 |             },
59 |           },
60 |           {
61 |             node: {
62 |               id: '2',
63 |               name: 'the-road-to-learn-react-chinese',
64 |               url: `https://github.com/${login}/the-road-to-learn-react-chinese`,
65 |               viewerHasStarred: false,
66 |             },
67 |           },
68 |         ],
69 |       },
70 |     }),
71 |   },
72 |   Mutation: {
73 |     addStar: (parent, { input }) => ({
74 |       starrable: {
75 |         id: input.starrableId,
76 |         viewerHasStarred: true,
77 |       },
78 |     }),
79 |   },
80 |   Starrable: {
81 |     __resolveType: () => 'Repository',
82 |   },
83 | };
84 | 


--------------------------------------------------------------------------------
/src/App.test.js:
--------------------------------------------------------------------------------
 1 | import React from 'react';
 2 | import { ApolloProvider } from 'react-apollo';
 3 | import { mount } from 'enzyme';
 4 | import { spy } from 'sinon';
 5 | 
 6 | import './test/setup';
 7 | import clientMock from './test/client-mock';
 8 | 
 9 | import App, {
10 |   Star,
11 |   STAR_REPOSITORY,
12 |   GET_REPOSITORIES_OF_ORGANIZATION,
13 | } from './App';
14 | 
15 | describe('Star', () => {
16 |   it('calls the mutate method on Apollo Client', () => {
17 |     spy(clientMock, 'mutate');
18 | 
19 |     const wrapper = mount(
20 |       <ApolloProvider client={clientMock}>
21 |         <Star id={'1'} />
22 |       </ApolloProvider>,
23 |     );
24 | 
25 |     wrapper.find('button').simulate('click');
26 | 
27 |     expect(clientMock.mutate.calledOnce).toEqual(true);
28 | 
29 |     expect(clientMock.mutate.getCall(0).args[0].variables).toEqual({
30 |       id: '1',
31 |     });
32 | 
33 |     expect(clientMock.mutate.getCall(0).args[0].mutation).toEqual(
34 |       STAR_REPOSITORY,
35 |     );
36 | 
37 |     clientMock.mutate.restore();
38 |   });
39 | });
40 | 
41 | describe('App', () => {
42 |   it('calls the query method on Apollo Client', () => {
43 |     spy(clientMock, 'watchQuery');
44 | 
45 |     const wrapper = mount(
46 |       <ApolloProvider client={clientMock}>
47 |         <App />
48 |       </ApolloProvider>,
49 |     );
50 | 
51 |     expect(clientMock.watchQuery.calledOnce).toEqual(true);
52 | 
53 |     expect(clientMock.watchQuery.getCall(0).args[0].query).toEqual(
54 |       GET_REPOSITORIES_OF_ORGANIZATION,
55 |     );
56 | 
57 |     clientMock.watchQuery.restore();
58 |   });
59 | 
60 |   it('renders correctly after the query method on Apollo Client executed', () => {
61 |     const wrapper = mount(
62 |       <ApolloProvider client={clientMock}>
63 |         <App />
64 |       </ApolloProvider>,
65 |     );
66 | 
67 |     expect(
68 |       wrapper
69 |         .find('Repositories')
70 |         .find('RepositoryList')
71 |         .find('li').length,
72 |     ).toEqual(2);
73 | 
74 |     expect(
75 |       wrapper.find('Repositories').props().repositories.edges[0].node
76 |         .id,
77 |     ).toEqual('1');
78 | 
79 |     expect(
80 |       wrapper.find('Repositories').props().repositories.edges[1].node
81 |         .id,
82 |     ).toEqual('2');
83 |   });
84 | });
85 | 


--------------------------------------------------------------------------------
/src/App.js:
--------------------------------------------------------------------------------
  1 | import React from 'react';
  2 | import gql from 'graphql-tag';
  3 | import { Query, Mutation } from 'react-apollo';
  4 | 
  5 | import './App.css';
  6 | 
  7 | const GET_REPOSITORIES_OF_ORGANIZATION = gql`
  8 |   {
  9 |     organization(login: "the-road-to-learn-react") {
 10 |       repositories(first: 20) {
 11 |         edges {
 12 |           node {
 13 |             id
 14 |             name
 15 |             url
 16 |             viewerHasStarred
 17 |           }
 18 |         }
 19 |       }
 20 |     }
 21 |   }
 22 | `;
 23 | 
 24 | const STAR_REPOSITORY = gql`
 25 |   mutation($id: ID!) {
 26 |     addStar(input: { starrableId: $id }) {
 27 |       starrable {
 28 |         id
 29 |         viewerHasStarred
 30 |       }
 31 |     }
 32 |   }
 33 | `;
 34 | 
 35 | const App = () => (
 36 |   <Query query={GET_REPOSITORIES_OF_ORGANIZATION}>
 37 |     {({ data: { organization }, loading }) => {
 38 |       if (loading || !organization) {
 39 |         return <div>Loading ...</div>;
 40 |       }
 41 | 
 42 |       return (
 43 |         <Repositories repositories={organization.repositories} />
 44 |       );
 45 |     }}
 46 |   </Query>
 47 | );
 48 | 
 49 | class Repositories extends React.Component {
 50 |   state = {
 51 |     selectedRepositoryIds: [],
 52 |   };
 53 | 
 54 |   toggleSelectRepository = (id, isSelected) => {
 55 |     let { selectedRepositoryIds } = this.state;
 56 | 
 57 |     selectedRepositoryIds = isSelected
 58 |       ? selectedRepositoryIds.filter(itemId => itemId !== id)
 59 |       : selectedRepositoryIds.concat(id);
 60 | 
 61 |     this.setState({ selectedRepositoryIds });
 62 |   };
 63 | 
 64 |   render() {
 65 |     return (
 66 |       <RepositoryList
 67 |         repositories={this.props.repositories}
 68 |         selectedRepositoryIds={this.state.selectedRepositoryIds}
 69 |         toggleSelectRepository={this.toggleSelectRepository}
 70 |       />
 71 |     );
 72 |   }
 73 | }
 74 | 
 75 | const RepositoryList = ({
 76 |   repositories,
 77 |   selectedRepositoryIds,
 78 |   toggleSelectRepository,
 79 | }) => (
 80 |   <ul>
 81 |     {repositories.edges.map(({ node }) => {
 82 |       const isSelected = selectedRepositoryIds.includes(node.id);
 83 | 
 84 |       const rowClassName = ['row'];
 85 | 
 86 |       if (isSelected) {
 87 |         rowClassName.push('row_selected');
 88 |       }
 89 | 
 90 |       return (
 91 |         <li className={rowClassName.join(' ')} key={node.id}>
 92 |           <Select
 93 |             id={node.id}
 94 |             isSelected={isSelected}
 95 |             toggleSelectRepository={toggleSelectRepository}
 96 |           />{' '}
 97 |           <a href={node.url}>{node.name}</a>{' '}
 98 |           {!node.viewerHasStarred && <Star id={node.id} />}
 99 |         </li>
100 |       );
101 |     })}
102 |   </ul>
103 | );
104 | 
105 | const Star = ({ id }) => (
106 |   <Mutation mutation={STAR_REPOSITORY} variables={{ id }}>
107 |     {starRepository => (
108 |       <button type="button" onClick={starRepository}>
109 |         Star
110 |       </button>
111 |     )}
112 |   </Mutation>
113 | );
114 | 
115 | const Select = ({ id, isSelected, toggleSelectRepository }) => (
116 |   <button
117 |     type="button"
118 |     onClick={() => toggleSelectRepository(id, isSelected)}
119 |   >
120 |     {isSelected ? 'Unselect' : 'Select'}
121 |   </button>
122 | );
123 | 
124 | export { Star, STAR_REPOSITORY, GET_REPOSITORIES_OF_ORGANIZATION };
125 | 
126 | export default App;
127 | 


--------------------------------------------------------------------------------
/src/registerServiceWorker.js:
--------------------------------------------------------------------------------
  1 | // In production, we register a service worker to serve assets from local cache.
  2 | 
  3 | // This lets the app load faster on subsequent visits in production, and gives
  4 | // it offline capabilities. However, it also means that developers (and users)
  5 | // will only see deployed updates on the "N+1" visit to a page, since previously
  6 | // cached resources are updated in the background.
  7 | 
  8 | // To learn more about the benefits of this model, read https://goo.gl/KwvDNy.
  9 | // This link also includes instructions on opting out of this behavior.
 10 | 
 11 | const isLocalhost = Boolean(
 12 |   window.location.hostname === 'localhost' ||
 13 |     // [::1] is the IPv6 localhost address.
 14 |     window.location.hostname === '[::1]' ||
 15 |     // 127.0.0.1/8 is considered localhost for IPv4.
 16 |     window.location.hostname.match(
 17 |       /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
 18 |     )
 19 | );
 20 | 
 21 | export default function register() {
 22 |   if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
 23 |     // The URL constructor is available in all browsers that support SW.
 24 |     const publicUrl = new URL(process.env.PUBLIC_URL, window.location);
 25 |     if (publicUrl.origin !== window.location.origin) {
 26 |       // Our service worker won't work if PUBLIC_URL is on a different origin
 27 |       // from what our page is served on. This might happen if a CDN is used to
 28 |       // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
 29 |       return;
 30 |     }
 31 | 
 32 |     window.addEventListener('load', () => {
 33 |       const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`;
 34 | 
 35 |       if (isLocalhost) {
 36 |         // This is running on localhost. Lets check if a service worker still exists or not.
 37 |         checkValidServiceWorker(swUrl);
 38 | 
 39 |         // Add some additional logging to localhost, pointing developers to the
 40 |         // service worker/PWA documentation.
 41 |         navigator.serviceWorker.ready.then(() => {
 42 |           console.log(
 43 |             'This web app is being served cache-first by a service ' +
 44 |               'worker. To learn more, visit https://goo.gl/SC7cgQ'
 45 |           );
 46 |         });
 47 |       } else {
 48 |         // Is not local host. Just register service worker
 49 |         registerValidSW(swUrl);
 50 |       }
 51 |     });
 52 |   }
 53 | }
 54 | 
 55 | function registerValidSW(swUrl) {
 56 |   navigator.serviceWorker
 57 |     .register(swUrl)
 58 |     .then(registration => {
 59 |       registration.onupdatefound = () => {
 60 |         const installingWorker = registration.installing;
 61 |         installingWorker.onstatechange = () => {
 62 |           if (installingWorker.state === 'installed') {
 63 |             if (navigator.serviceWorker.controller) {
 64 |               // At this point, the old content will have been purged and
 65 |               // the fresh content will have been added to the cache.
 66 |               // It's the perfect time to display a "New content is
 67 |               // available; please refresh." message in your web app.
 68 |               console.log('New content is available; please refresh.');
 69 |             } else {
 70 |               // At this point, everything has been precached.
 71 |               // It's the perfect time to display a
 72 |               // "Content is cached for offline use." message.
 73 |               console.log('Content is cached for offline use.');
 74 |             }
 75 |           }
 76 |         };
 77 |       };
 78 |     })
 79 |     .catch(error => {
 80 |       console.error('Error during service worker registration:', error);
 81 |     });
 82 | }
 83 | 
 84 | function checkValidServiceWorker(swUrl) {
 85 |   // Check if the service worker can be found. If it can't reload the page.
 86 |   fetch(swUrl)
 87 |     .then(response => {
 88 |       // Ensure service worker exists, and that we really are getting a JS file.
 89 |       if (
 90 |         response.status === 404 ||
 91 |         response.headers.get('content-type').indexOf('javascript') === -1
 92 |       ) {
 93 |         // No service worker found. Probably a different app. Reload the page.
 94 |         navigator.serviceWorker.ready.then(registration => {
 95 |           registration.unregister().then(() => {
 96 |             window.location.reload();
 97 |           });
 98 |         });
 99 |       } else {
100 |         // Service worker found. Proceed as normal.
101 |         registerValidSW(swUrl);
102 |       }
103 |     })
104 |     .catch(() => {
105 |       console.log(
106 |         'No internet connection found. App is running in offline mode.'
107 |       );
108 |     });
109 | }
110 | 
111 | export function unregister() {
112 |   if ('serviceWorker' in navigator) {
113 |     navigator.serviceWorker.ready.then(registration => {
114 |       registration.unregister();
115 |     });
116 |   }
117 | }
118 | 


--------------------------------------------------------------------------------