How to resolve ej undefined issue when using the Report Viewer properties

To resolve the ej undefined issue in the Bold Reports^® Angular Report Viewer, register the @bold-reports/types under the typeRoots and add the typings jquery and reports.all to the tsconfig.app.json or the tsconfig.json file. The issue occurs when the type references for the Bold Reports^® components are not properly referred in the Angular application.

```js
{
  ...
  ...
  "compilerOptions": {
    ...
    ...
    "typeRoots": [
      "node_modules/@types",
      "node_modules/@boldreports/types"
    ],
    "types": [
      "jquery",
      "reports.all"
    ]
  },
  ...
  ...
}
```

If you have still faced the issue of 'ej' is not defined after this configuration in Angular CLI version 7, refer to the following code sample at the top of your app.component.ts file in your application where you have rendered Syncfusion^® Components(model file) to resolve the issue.

 `/// <reference types="reports.all" />`

  import { Component } from '@angular/core';

 @Component({
   selector: 'app-root',
   templateUrl: './app.component.html',
   styleUrls: ['./app.component.css']
 })
 export class AppComponent {
   ...
   ...
 }
 ```