Backend API
        
    import React from 'react';
import Diagram, {
  Nodes, Edges, AutoLayout, Toolbox, Group,
} from 'devextreme-react/diagram';
import { ArrayStore } from 'devextreme-react/common/data';
import service from './data.ts';
const flowNodesDataSource = new ArrayStore({
  key: 'id',
  data: service.getFlowNodes(),
});
const flowEdgesDataSource = new ArrayStore({
  key: 'id',
  data: service.getFlowEdges(),
});
export default function App() {
  return (
    <Diagram id="diagram">
      <Nodes dataSource={flowNodesDataSource} typeExpr="type" textExpr="text">
        <AutoLayout type="layered" />
      </Nodes>
      <Edges dataSource={flowEdgesDataSource} textExpr="text" fromExpr="fromId" toExpr="toId" />
      <Toolbox>
        <Group category="general" title="General" />
      </Toolbox>
    </Diagram>
  );
}
    
    import React from 'react';
import Diagram, {
  Nodes, Edges, AutoLayout, Toolbox, Group,
} from 'devextreme-react/diagram';
import { ArrayStore } from 'devextreme-react/common/data';
import service from './data.js';
const flowNodesDataSource = new ArrayStore({
  key: 'id',
  data: service.getFlowNodes(),
});
const flowEdgesDataSource = new ArrayStore({
  key: 'id',
  data: service.getFlowEdges(),
});
export default function App() {
  return (
    <Diagram id="diagram">
      <Nodes
        dataSource={flowNodesDataSource}
        typeExpr="type"
        textExpr="text"
      >
        <AutoLayout type="layered" />
      </Nodes>
      <Edges
        dataSource={flowEdgesDataSource}
        textExpr="text"
        fromExpr="fromId"
        toExpr="toId"
      />
      <Toolbox>
        <Group
          category="general"
          title="General"
        />
      </Toolbox>
    </Diagram>
  );
}
    
    import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.tsx';
ReactDOM.render(
  <App />,
  document.getElementById('app'),
);
    
    const flowNodes = [
  {
    id: 107,
    text: 'A new ticket',
    type: 'terminator',
  },
  {
    id: 108,
    text: 'Analyze the issue',
    type: 'process',
  },
  {
    id: 118,
    text: 'Do we have all information to work with?',
    type: 'diamond',
  },
  {
    id: 120,
    text: 'Answered',
    type: 'terminator',
  },
  {
    id: 121,
    text: 'Request additional information or clarify the scenario',
    type: 'rectangle',
  },
  {
    id: 125,
    text: 'Prepare an example in Code Central',
    type: 'rectangle',
  },
  {
    id: 127,
    text: 'Update the documentation',
    type: 'rectangle',
  },
  {
    id: 131,
    text: 'Process the ticket',
    type: 'rectangle',
  },
  {
    id: 133,
    text: 'Work with the R&D team',
    type: 'rectangle',
  },
];
const flowEdges = [
  {
    fromId: 107,
    id: 116,
    text: null,
    toId: 108,
  },
  {
    fromId: 108,
    id: 117,
    text: null,
    toId: 118,
  },
  {
    fromId: 118,
    id: 122,
    text: 'No',
    toId: 121,
  },
  {
    fromId: 121,
    id: 123,
    text: null,
    toId: 108,
  },
  {
    fromId: 131,
    id: 124,
    text: null,
    toId: 120,
  },
  {
    fromId: 120,
    id: 126,
    text: '',
    toId: 125,
  },
  {
    fromId: 120,
    id: 130,
    text: '',
    toId: 127,
  },
  {
    fromId: 118,
    id: 132,
    text: 'Yes',
    toId: 131,
  },
  {
    fromId: 131,
    id: 134,
    text: 'Need developer assistance?',
    toId: 133,
  },
  {
    fromId: 133,
    id: 135,
    text: null,
    toId: 120,
  },
];
export default {
  getFlowNodes() {
    return flowNodes;
  },
  getFlowEdges() {
    return flowEdges;
  },
};
    
    window.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://cdn.jsdelivr.net/npm/',
    '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@link:../../packages/devextreme/artifacts/npm/devextreme/cjs',
    'devextreme-react': 'npm:devextreme-react@link:../../packages/devextreme-react/npm/cjs',
    'devextreme-quill': 'npm:devextreme-quill@1.7.6/dist/dx-quill.min.js',
    'devexpress-diagram': 'npm:devexpress-diagram@2.2.24/dist/dx-diagram.js',
    'devexpress-gantt': 'npm:devexpress-gantt@4.1.64/dist/dx-gantt.js',
    'inferno': 'npm:inferno@8.2.3/dist/inferno.min.js',
    'inferno-compat': 'npm:inferno-compat/dist/inferno-compat.min.js',
    'inferno-create-element': 'npm:inferno-create-element@8.2.3/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',
    '@preact/signals-core': 'npm:@preact/signals-core@1.8.0/dist/signals-core.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-react/common': {
      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',
  ],
  babelOptions: {
    sourceMaps: false,
    stage0: true,
    react: true,
  },
};
System.config(window.config);
// eslint-disable-next-line
const useTgzInCSB = ['openai'];
    
    import React from 'react';
import ReactDOM from 'react-dom';
import App from './App.js';
ReactDOM.render(<App />, document.getElementById('app'));
    
    const flowNodes = [
  {
    id: 107,
    text: 'A new ticket',
    type: 'terminator',
  },
  {
    id: 108,
    text: 'Analyze the issue',
    type: 'process',
  },
  {
    id: 118,
    text: 'Do we have all information to work with?',
    type: 'diamond',
  },
  {
    id: 120,
    text: 'Answered',
    type: 'terminator',
  },
  {
    id: 121,
    text: 'Request additional information or clarify the scenario',
    type: 'rectangle',
  },
  {
    id: 125,
    text: 'Prepare an example in Code Central',
    type: 'rectangle',
  },
  {
    id: 127,
    text: 'Update the documentation',
    type: 'rectangle',
  },
  {
    id: 131,
    text: 'Process the ticket',
    type: 'rectangle',
  },
  {
    id: 133,
    text: 'Work with the R&D team',
    type: 'rectangle',
  },
];
const flowEdges = [
  {
    fromId: 107,
    id: 116,
    text: null,
    toId: 108,
  },
  {
    fromId: 108,
    id: 117,
    text: null,
    toId: 118,
  },
  {
    fromId: 118,
    id: 122,
    text: 'No',
    toId: 121,
  },
  {
    fromId: 121,
    id: 123,
    text: null,
    toId: 108,
  },
  {
    fromId: 131,
    id: 124,
    text: null,
    toId: 120,
  },
  {
    fromId: 120,
    id: 126,
    text: '',
    toId: 125,
  },
  {
    fromId: 120,
    id: 130,
    text: '',
    toId: 127,
  },
  {
    fromId: 118,
    id: 132,
    text: 'Yes',
    toId: 131,
  },
  {
    fromId: 131,
    id: 134,
    text: 'Need developer assistance?',
    toId: 133,
  },
  {
    fromId: 133,
    id: 135,
    text: null,
    toId: 120,
  },
];
export default {
  getFlowNodes() {
    return flowNodes;
  },
  getFlowEdges() {
    return flowEdges;
  },
};
    
    <!DOCTYPE html>
<html lang="en">
  <head>
    <title>DevExtreme Demo</title>
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=5.0" />
    <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/25.1.6/css/dx-diagram.min.css" />
    <link rel="stylesheet" type="text/css" href="https://cdn3.devexpress.com/jslib/25.1.6/css/dx.light.css" />
    <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" />
    <link rel="stylesheet" type="text/css" href="styles.css" />
    <script src="https://cdn.jsdelivr.net/npm/core-js@2.6.12/client/shim.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/systemjs@0.21.3/dist/system.js"></script>
    <script type="text/javascript" src="config.js"></script>
    <script type="text/javascript">
      System.import("./index.tsx");
    </script>
  </head>
  <body class="dx-viewport">
    <div class="demo-container">
      <div id="app"></div>
    </div>
  </body>
</html>
    
    #diagram {
  height: 725px;
}