Update frontend build system to shed old dependencies, and address fallout from that (#521)

* get tests working and update copyright headers * lint fix * eslint ts update * update CI to use NPM * fix CI * prettier * npm, not yarn for docker * remove unused package * bump dockerfile to latest node LTS and no need for cache clean * make frontend Dockerfile work and remove unused SUBSTRATE_TELEMETRY_SAMPLE * remove final yarn references * add another comment * remove unused import * remove more unused deps * comment typo
2026-10-20 18:56:21 +00:00 · 2023-01-27 14:13:34 +00:00
1 parent dc2bc7704d
commit 779c5698a0
@@ -35,14 +35,14 @@ jobs:
      with:
        node-version: ${{ matrix.node-version }}

-    - name: install
-      run: yarn install
+    - name: Install
+      run: npm install

-    - name: check
-      run: yarn pretty:check
+    - name: Check
+      run: npm run pretty:check

    - name: Test
-      run: yarn test
+      run: npm run test

    - name: Build
-      run: yarn build
+      run: npm run build
@@ -21,7 +21,6 @@ build
 env-config.js

 npm-debug.log*
-yarn-debug.log*
-yarn-error.log*
+npm-error.log*
 .vscode
 .nyc
@@ -40,7 +40,7 @@ To run the frontend make sure to grab the latest stable version of node and inst

 ```sh
 nvm install stable
-(cd frontend && yarn)
+(cd frontend && npm install)
 ```

 ### Terminal 1 & 2 - Backend
@@ -72,8 +72,8 @@ By default, `telemetry_core` will listen on 127.0.0.1:8000, and `telemetry_shard

 ```sh
 cd frontend
-yarn install
-yarn start
+npm install
+npm run start
 ```

 Once this is running, you'll be able to navigate to [http://localhost:3000](http://localhost:3000) to view the UI.
@@ -1,5 +1,5 @@
 #### BUILDER IMAGE  ####
-FROM docker.io/node:14 as builder
+FROM docker.io/node:18 as builder
 LABEL maintainer="Chevdor <chevdor@gmail.com>"
 LABEL description="Substrate Telemetry Frontend builder image"

@@ -7,9 +7,7 @@ WORKDIR /opt/builder

 COPY . .

-RUN yarn install && \
-    yarn build && \
-    yarn cache clean
+RUN npm install && npm run build

 #### OUTPUT IMAGE ####
 FROM docker.io/nginx:stable-alpine
@@ -4,7 +4,6 @@
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
    <meta name="theme-color" content="#000000">
-    <!-- <link rel="manifest" href="%PUBLIC_URL%/manifest.json"> -->
    <title>Polkadot Telemetry</title>
    <script type="text/javascript" src="/tmp/env-config.js"></script>
    <style>
@@ -13,7 +12,6 @@
        color: #111;
      }
    </style>
-    <script type="text/javascript" src="./Jdenticon.min.js"></script>
    <link rel="icon" type="image/svg+xml" href="/favicon.svg">
  </head>
  <body>
@@ -0,0 +1,3 @@
+// loading images gives back a path. This is what we replace
+// that with for tests:
+module.exports = 'test-image-stub';
@@ -0,0 +1,2 @@
+// For loading styles, give back an empty object in tests:
+module.exports = {};
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -0,0 +1,26 @@
+// Source code for the Substrate Telemetry Server.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+/** @type {import('ts-jest').JestConfigWithTsJest} */
+module.exports = {
+  preset: 'ts-jest',
+  testEnvironment: 'jsdom',
+  setupFiles: ['<rootDir>/setupJest.js'],
+  moduleNameMapper: {
+    "\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$": "<rootDir>/assets/mock.image.js",
+    "\\.(css|less|scss|sass)$": "<rootDir>/assets/mock.style.js"
+  },
+};
@@ -5,47 +5,45 @@
  "license": "GPL-3.0",
  "description": "Polkadot Telemetry frontend",
  "scripts": {
-    "precommit": "lint-staged",
-    "start": "react-scripts start",
-    "build": "react-scripts build",
-    "test": "TS_NODE_PROJECT=tsconfig.test.json tape -r ts-node/register test/**/*spec.ts",
-    "test:coverage": "nyc yarn test",
-    "eject": "react-scripts eject",
+    "start": "webpack serve --mode=development",
+    "build": "webpack --mode=production",
+    "test": "jest",
    "pretty:check": "prettier --check src/**/*.{ts,tsx}",
    "pretty:fix": "prettier --write src",
-    "clean": "rm -rf node_modules build .nyc ./tmp/env-config.js report*.json yarn-error.log",
+    "clean": "rm -rf node_modules build ./tmp/env-config.js report*.json npm-error.log",
    "lint": "eslint src"
  },
  "dependencies": {
    "@polkadot/util-crypto": "^10.1.7",
-    "@types/react-measure": "^2.0.6",
-    "blakejs": "^1.2.0",
-    "husky": "^8.0.1",
-    "lint-staged": "^13.0.3",
    "react": "^18.2.0",
-    "react-dom": "^18.2.0",
-    "react-measure": "^2.5.2",
-    "react-scripts": "5.0.1"
+    "react-dom": "^18.2.0"
  },
  "devDependencies": {
+    "@types/jest": "29.4.0",
    "@types/node": "^16.11.58",
    "@types/react": "^18.0.18",
    "@types/react-dom": "^18.0.6",
-    "@types/tape": "^4.13.0",
-    "@typescript-eslint/eslint-plugin": "^5.36.2",
-    "@typescript-eslint/parser": "^5.36.2",
+    "@types/react-measure": "^2.0.6",
+    "@typescript-eslint/eslint-plugin": "^5.49.0",
+    "@typescript-eslint/parser": "^5.49.0",
+    "css-loader": "^6.7.3",
    "eslint": "^8.23.0",
    "eslint-config-prettier": "^8.5.0",
    "eslint-plugin-prettier": "^4.2.1",
    "eslint-plugin-react": "^7.31.8",
    "eslint-plugin-react-hooks": "^4.6.0",
-    "identity-obj-proxy": "^3.0.0",
-    "istanbul": "^0.4.5",
-    "nyc": "^15.0.1",
+    "html-webpack-plugin": "^5.5.0",
+    "jest": "^29.4.0",
+    "jest-environment-jsdom": "^29.4.0",
    "prettier": "^2.0.5",
-    "tape": "^4.13.2",
-    "ts-node": "^8.9.0",
-    "typescript": "^4.4.2"
+    "style-loader": "^3.3.1",
+    "ts-jest": "29.0.5",
+    "ts-loader": "^9.4.2",
+    "typescript": "^4.9.4",
+    "webpack": "^5.75.0",
+    "webpack-cli": "^5.0.1",
+    "webpack-dev-server": "^4.11.1",
+    "whatwg-fetch": "^3.6.2"
  },
  "lint-staged": {
    "src/**/*.{ts,tsx,json,css}": [
@@ -1,19 +0,0 @@
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@@ -12,7 +12,6 @@ echo -n > $TARGET

 declare -a vars=(
  "SUBSTRATE_TELEMETRY_URL"
-  "SUBSTRATE_TELEMETRY_SAMPLE"
 )

 echo "window.process_env = {" >> $TARGET
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -14,19 +14,12 @@
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.

-declare module '@fnando/sparkline' {
-  namespace sparkline {
-    export interface Options {
-      minScale?: number;
-      spotRadius?: number;
-      cursorWidth?: number;
-      interactive?: boolean;
-      onmousemove?: (event: MouseEvent, datapoint: { x: number, y: number, index: number, value: number });
-      onmouseout?: () => void;
-    }
-  }
+// This file runs some code before a jest test.

-  function sparkline(svg: SVGSVGElement, values: number[], options?: sparkline.Options): void;
+// polyfill TextEncoder/TextDecoder since they aren't in jsdom:
+const { TextEncoder, TextDecoder } = require('util');
+global.TextEncoder = TextEncoder;
+global.TextDecoder = TextDecoder;

-  export = sparkline;
-}
+// polyfill fetch since it's not in jsdom:
+require('whatwg-fetch');
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -15,11 +15,13 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.

 import * as React from 'react';
-import * as ReactDOM from 'react-dom';
+import { createRoot } from 'react-dom/client';
 import App from './App';

-it('renders without crashing', () => {
+describe('App.tsx', () => {
+  it('renders without crashing', () => {
    const div = document.createElement('div');
-  ReactDOM.render(<App />, div);
-  ReactDOM.unmountComponentAtNode(div);
+    const root = createRoot(div);
+    root.render(<App />);
+  });
 });
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -56,12 +56,11 @@ export class Connection {
  private static getAddress(): string {
    const ENV_URL = 'SUBSTRATE_TELEMETRY_URL';

-    if (process.env && process.env[ENV_URL]) {
-      return process.env[ENV_URL] as string;
-    }
-
-    if (window.process_env && window.process_env[ENV_URL]) {
-      return window.process_env[ENV_URL];
+    // If env_config.js is generated and loaded in, it'll set this variable.
+    // This is set up in the Dockerfile. Otherwise, we just connect to a
+    // default URL.
+    if (window.process_env?.[ENV_URL]) {
+      return window.process_env[ENV_URL] as string;
    }

    if (window.location.protocol === 'https:') {
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -0,0 +1,99 @@
+// Source code for the Substrate Telemetry Server.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+import { sortedInsert, sortedIndexOf } from '.';
+
+describe('sortedInsert', () => {
+  it('inserts a value in the correct place', () => {
+    function assertInsert(item: number, into: number[], equals: number[]) {
+      const cmp = (a: number, b: number) => a - b;
+      sortedInsert(item, into, cmp);
+      expect(into).toStrictEqual(equals);
+    }
+
+    assertInsert(1, [2, 3, 4, 5, 6, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(2, [1, 3, 4, 5, 6, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(3, [1, 2, 4, 5, 6, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(4, [1, 2, 3, 5, 6, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(5, [1, 2, 3, 4, 6, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(6, [1, 2, 3, 4, 5, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(7, [1, 2, 3, 4, 5, 6, 8, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(8, [1, 2, 3, 4, 5, 6, 7, 9], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    assertInsert(9, [1, 2, 3, 4, 5, 6, 7, 8], [1, 2, 3, 4, 5, 6, 7, 8, 9]);
+  });
+
+  it('fuzz tests insert as expected', () => {
+    const cmp = (a: number, b: number) => a - b;
+    const scramble = () => Math.random() - 0.5;
+    const sorted = [1, 2, 3, 4, 5, 6, 7, 8, 9];
+
+    for (let i = 0; i < 50; i++) {
+      const scrambled = sorted.sort(scramble);
+      const resorted: number[] = [];
+
+      for (const item of scrambled) {
+        sortedInsert(item, resorted, cmp);
+      }
+
+      expect(resorted).toStrictEqual([1, 2, 3, 4, 5, 6, 7, 8, 9]);
+    }
+  });
+
+  it('indexes', () => {
+    const cmp = (a: number, b: number) => a - b;
+    const into: number[] = [];
+
+    expect(sortedInsert(5, into, cmp)).toStrictEqual(0);
+    expect(into).toStrictEqual([5]);
+    expect(sortedInsert(1, into, cmp)).toStrictEqual(0);
+    expect(into).toStrictEqual([1, 5]);
+    expect(sortedInsert(9, into, cmp)).toStrictEqual(2);
+    expect(into).toStrictEqual([1, 5, 9]);
+    expect(sortedInsert(3, into, cmp)).toStrictEqual(1);
+    expect(into).toStrictEqual([1, 3, 5, 9]);
+    expect(sortedInsert(7, into, cmp)).toStrictEqual(3);
+    expect(into).toStrictEqual([1, 3, 5, 7, 9]);
+    expect(sortedInsert(4, into, cmp)).toStrictEqual(2);
+    expect(into).toStrictEqual([1, 3, 4, 5, 7, 9]);
+    expect(sortedInsert(6, into, cmp)).toStrictEqual(4);
+    expect(into).toStrictEqual([1, 3, 4, 5, 6, 7, 9]);
+    expect(sortedInsert(2, into, cmp)).toStrictEqual(1);
+    expect(into).toStrictEqual([1, 2, 3, 4, 5, 6, 7, 9]);
+    expect(sortedInsert(8, into, cmp)).toStrictEqual(7);
+    expect(into).toStrictEqual([1, 2, 3, 4, 5, 6, 7, 8, 9]);
+  });
+
+  it('sortedIndexOf', () => {
+    type ValueObj = {
+      value: number;
+    };
+    const cmp = (a: ValueObj, b: ValueObj) => a.value - b.value;
+    const array: Array<ValueObj> = [];
+
+    for (let i = 1; i <= 1000; i++) {
+      array.push({ value: i >> 1 });
+    }
+
+    for (let i = 0; i < 50; i++) {
+      const index = (Math.random() * 1000) | 0;
+      const item = array[index];
+
+      expect(sortedIndexOf(item, array, cmp)).toStrictEqual(
+        array.indexOf(item)
+      );
+    }
+  });
+});
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,6 +1,6 @@
 /*
 Source code for the Substrate Telemetry Server.
-Copyright (C) 2021 Parity Technologies (UK) Ltd.
+Copyright (C) 2023 Parity Technologies (UK) Ltd.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -18,10 +18,7 @@ import * as React from 'react';
 import { createRoot } from 'react-dom/client';
 import App from './App';
 import './index.css';
-import { unregister } from './registerServiceWorker';

 const container = document.getElementById('root') as HTMLElement;
 const root = createRoot(container);
 root.render(<App />);
-
-unregister();
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by
@@ -1,5 +1,5 @@
 // Source code for the Substrate Telemetry Server.
-// Copyright (C) 2021 Parity Technologies (UK) Ltd.
+// Copyright (C) 2023 Parity Technologies (UK) Ltd.
 //
 // This program is free software: you can redistribute it and/or modify
 // it under the terms of the GNU General Public License as published by