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Backend API
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import React from 'react';import PieChart, { Series, Tooltip, Export,} from 'devextreme-react/pie-chart';import { populationData } from './data.ts';import TooltipTemplate from './TooltipTemplate.tsx';function App() { return ( <PieChart id="pie-chart" dataSource={populationData} title="Top 10 Most Populated States in US" palette="Bright" > <Series argumentField="name" valueField="population" /> <Tooltip enabled={true} contentRender={TooltipTemplate} /> <Export enabled={true} /> </PieChart> );}export default App;xxxxxxxxxximport React from 'react';import PieChart, { Series, Tooltip, Export } from 'devextreme-react/pie-chart';import { populationData } from './data.js';import TooltipTemplate from './TooltipTemplate.js';function App() { return ( <PieChart id="pie-chart" dataSource={populationData} title="Top 10 Most Populated States in US" palette="Bright" > <Series argumentField="name" valueField="population" /> <Tooltip enabled={true} contentRender={TooltipTemplate} /> <Export enabled={true} /> </PieChart> );}export default App;xxxxxxxxxximport React from 'react';function getImagePath(point: { data: { name: string; }; }) { return `images/flags/${point.data.name.replace(/\s/, '')}.svg`;}const formatNumber = new Intl.NumberFormat('en-US', { maximumFractionDigits: 0,}).format;export default function TooltipTemplate(info) { return ( <div className="state-tooltip"> <img src={getImagePath(info.point)} /><h4 className="state">{info.argument}</h4> <div className="capital"> <span className="caption">Capital</span>: {info.point.data.capital} </div> <div className="population"> <span className="caption">Population</span>: {formatNumber(info.value)} people </div> <div> <span className="caption">Area</span>: <span className="area-km">{formatNumber(info.point.data.area)}</span> km<sup>2</sup> (<span className="area-mi">{formatNumber(0.3861 * info.point.data.area)}</span> mi<sup>2</sup>) </div> </div> );}xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.tsx';ReactDOM.render( <App />, document.getElementById('app'),);xxxxxxxxxxexport const populationData = [{ name: 'California', population: 38802500, capital: 'Sacramento', area: 423967,}, { name: 'Texas', population: 26956958, capital: 'Austin', area: 695662,}, { name: 'Florida', population: 19893297, capital: 'Tallahassee', area: 170312,}, { name: 'New York', population: 19746227, capital: 'Albany', area: 141297,}, { name: 'Illinois', population: 12880580, capital: 'Springfield', area: 149995,}, { name: 'Pennsylvania', population: 12787209, capital: 'Harrisburg', area: 119280,}, { name: 'Ohio', population: 11594163, capital: 'Columbus', area: 116098,}, { name: 'Georgia', population: 10097343, capital: 'Atlanta', area: 153910,}, { name: 'North Carolina', population: 9943964, capital: 'Raleigh', area: 139391,}, { name: 'Michigan', population: 9909877, capital: 'Lansing', area: 250487,}];xxxxxxxxxxwindow.exports = window.exports || {};window.config = { transpiler: 'ts', typescriptOptions: { module: 'system', emitDecoratorMetadata: true, experimentalDecorators: true, jsx: 'react', }, meta: { 'react': { 'esModule': true, }, 'typescript': { 'exports': 'ts', }, 'devextreme/time_zone_utils.js': { 'esModule': true, }, 'devextreme/localization.js': { 'esModule': true, }, 'devextreme/viz/palette.js': { 'esModule': true, }, 'openai': { 'esModule': true, }, }, paths: { 'npm:': 'https://unpkg.com/', 'bundles:': 'bundles/', 'externals:': 'bundles/externals/', }, defaultExtension: 'js', map: { 'ts': 'npm:plugin-typescript@8.0.0/lib/plugin.js', 'typescript': 'npm:typescript@4.2.4/lib/typescript.js', 'jszip': 'npm:jszip@3.10.1/dist/jszip.min.js', 'react': 'npm:react@17.0.2/umd/react.development.js', 'react-dom': 'npm:react-dom@17.0.2/umd/react-dom.development.js', 'prop-types': 'npm:prop-types/prop-types.js', 'rrule': 'npm:rrule@2.6.4/dist/es5/rrule.js', 'luxon': 'npm:luxon@3.4.4/build/global/luxon.min.js', 'es6-object-assign': 'npm:es6-object-assign', 'devextreme': 'npm:devextreme@24.2.6/cjs', 'devextreme-react': 'npm:devextreme-react@24.2.6/cjs', 'devextreme-quill': 'npm:devextreme-quill@1.7.1/dist/dx-quill.min.js', 'devexpress-diagram': 'npm:devexpress-diagram@2.2.15/dist/dx-diagram.js', 'devexpress-gantt': 'npm:devexpress-gantt@4.1.60/dist/dx-gantt.js', '@devextreme/runtime': 'npm:@devextreme/runtime@3.0.12', 'inferno': 'npm:inferno@7.4.11/dist/inferno.min.js', 'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js', 'inferno-create-element': 'npm:inferno-create-element@7.4.11/dist/inferno-create-element.min.js', 'inferno-dom': 'npm:inferno-dom/dist/inferno-dom.min.js', 'inferno-hydrate': 'npm:inferno-hydrate/dist/inferno-hydrate.min.js', 'inferno-clone-vnode': 'npm:inferno-clone-vnode/dist/inferno-clone-vnode.min.js', 'inferno-create-class': 'npm:inferno-create-class/dist/inferno-create-class.min.js', 'inferno-extras': 'npm:inferno-extras/dist/inferno-extras.min.js', 'devextreme-cldr-data': 'npm:devextreme-cldr-data@1.0.3', // SystemJS plugins 'plugin-babel': 'npm:systemjs-plugin-babel@0.0.25/plugin-babel.js', 'systemjs-babel-build': 'npm:systemjs-plugin-babel@0.0.25/systemjs-babel-browser.js', // Prettier 'prettier/standalone': 'npm:prettier@2.8.8/standalone.js', 'prettier/parser-html': 'npm:prettier@2.8.8/parser-html.js', }, packages: { 'devextreme': { defaultExtension: 'js', }, 'devextreme-react': { main: 'index.js', }, 'devextreme/events/utils': { main: 'index', }, 'devextreme/common/core/events/utils': { main: 'index', }, 'devextreme/localization/messages': { format: 'json', defaultExtension: 'json', }, 'devextreme/events': { main: 'index', }, 'es6-object-assign': { main: './index.js', defaultExtension: 'js', }, }, packageConfigPaths: [ 'npm:@devextreme/*/package.json', 'npm:@devextreme/runtime@3.0.12/inferno/package.json', ], babelOptions: { sourceMaps: false, stage0: true, react: true, },};System.config(window.config);xxxxxxxxxximport React from 'react';function getImagePath(point) { return `images/flags/${point.data.name.replace(/\s/, '')}.svg`;}const formatNumber = new Intl.NumberFormat('en-US', { maximumFractionDigits: 0,}).format;export default function TooltipTemplate(info) { return ( <div className="state-tooltip"> <img src={getImagePath(info.point)} /> <h4 className="state">{info.argument}</h4> <div className="capital"> <span className="caption">Capital</span>: {info.point.data.capital} </div> <div className="population"> <span className="caption">Population</span>: {formatNumber(info.value)} people </div> <div> <span className="caption">Area</span>:{' '} <span className="area-km">{formatNumber(info.point.data.area)}</span> km<sup>2</sup> ( <span className="area-mi">{formatNumber(0.3861 * info.point.data.area)}</span> mi <sup>2</sup>) </div> </div> );}xxxxxxxxxximport React from 'react';import ReactDOM from 'react-dom';import App from './App.js';ReactDOM.render(<App />, document.getElementById('app'));xxxxxxxxxxexport const populationData = [ { name: 'California', population: 38802500, capital: 'Sacramento', area: 423967, }, { name: 'Texas', population: 26956958, capital: 'Austin', area: 695662, }, { name: 'Florida', population: 19893297, capital: 'Tallahassee', area: 170312, }, { name: 'New York', population: 19746227, capital: 'Albany', area: 141297, }, { name: 'Illinois', population: 12880580, capital: 'Springfield', area: 149995, }, { name: 'Pennsylvania', population: 12787209, capital: 'Harrisburg', area: 119280, }, { name: 'Ohio', population: 11594163, capital: 'Columbus', area: 116098, }, { name: 'Georgia', population: 10097343, capital: 'Atlanta', area: 153910, }, { name: 'North Carolina', population: 9943964, capital: 'Raleigh', area: 139391, }, { name: 'Michigan', population: 9909877, capital: 'Lansing', area: 250487, },];xxxxxxxxxx<html lang="en"> <head></head> <body class="dx-viewport"> <div class="demo-container"> <div id="app"></div> </div> </body></html>xxxxxxxxxx#pie-chart { height: 440px;}.state-tooltip { height: 90px;}.state-tooltip > img { width: 60px; height: 40px; display: block; margin: 0 5px 0 0; float: left; border: 1px solid rgba(191, 191, 191, 0.25);}.state-tooltip > h4 { line-height: 40px; font-size: 14px; margin-bottom: 5px;}.state-tooltip .caption { font-weight: 500;}.state-tooltip sup { font-size: 0.8em; vertical-align: super; line-height: 0;}