DevExtreme Angular - Using Webpack
Install DevExtreme
Install the devextreme and devextreme-angular npm packages:
npm install devextreme@20.2 devextreme-angular@20.2 --save --save-exact
Configure Webpack Loaders
Open the webpack.config.js file and configure loaders to process CSS and fonts:
...
rules: [
  ...
  { 
    test: /\.css$/,
    use: [
      { loader: "style-loader" },
      { loader: "css-loader" }]
  },
  { 
    test: /\.(eot|svg|ttf|woff|woff2)$/, 
    use: "url-loader?name=[name].[ext]"
  }
]
...In addition, open the package.json file and ensure style-loader, css-loader, and url-loader are listed in devDependencies.
Import Stylesheets
Open the main .ts file and import dx.common.css and a predefined theme stylesheet (dx.light.css in the code below).
// ... import 'devextreme/dist/css/dx.common.css'; import 'devextreme/dist/css/dx.light.css';
Import DevExtreme Modules
Go to the NgModule in which you are going to use DevExtreme UI components and import the required DevExtreme modules. Note that if tree shaking is configured in your application, you can import the modules from devextreme-angular. Otherwise, you should import them from specific files. 
// ...
import { DxButtonModule } from 'devextreme-angular';
// or if tree shaking is not configured
// import { DxButtonModule } from 'devextreme-angular/ui/button';
@NgModule({
    imports: [
        // ...
        DxButtonModule
    ],
    // ...
})
export class AppModule { }Now you can use the DevExtreme UI component in your application:
<dx-button
    text="Click me"
    (onClick)="helloWorld()">
</dx-button>
import { Component } from '@angular/core';
@Component({
    selector: 'app-root',
    templateUrl: './app.component.html',
    styleUrls: ['./app.component.css']
})
export class AppComponent {
    helloWorld() {
        alert('Hello world!');
    }
}Run the Application
Build the application with the following command:
webpack
... and open the HTML file where your bundle is referenced (usually index.html) in your browser.
If you have technical questions, please create a support ticket in the DevExpress Support Center.