Cannot use interfaces from @progress/kendo-angular-charts when targeting es2015

[AlexKichkailo]

When trying to use an interface from @progress/kendo-angular-charts, an error is shown during the build if tsconfig targets es2015. There are no errors if tsconfig targets es5.

Steps to reproduce the behavior:

1. create a new Angular 8 application using ng new ang8.
2. install @progress/kendo-angular-charts
3. create a new file series-wrapper.ts.
   `import { Series } from '@progress/kendo-angular-charts';

export class SeriesWrapper {
constructor(
public series: Series
) { }
}
`
4) Use the file in app.component.ts
public seriesWrapper = new SeriesWrapper(null);
5) Build the project with npm run start

Build fails with the following error

ERROR in ./src/app/series-wrapper.ts 8:12-18
"export 'Series' was not found in '@progress/kendo-angular-charts'

See attached the attached file with the repro
ang8.zip

Expected behavior
Build does not fail. Application is working.

[tsvetomir]

This looks like a regression in @angular-devkit/build-angular. Please, try downgrading to v0.800.3:

diff --git a/package.json b/package.json
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "@progress/kendo-theme-default": "latest"
   },
   "devDependencies": {
-    "@angular-devkit/build-angular": "~0.800.0",
+    "@angular-devkit/build-angular": "0.800.3",
     "@angular/cli": "~8.0.4",
     "@angular/compiler-cli": "~8.0.1",
     "@angular/language-service": "~8.0.1",

There are a few similar bug reports logged in https://github.com/angular/angular:

• export MatProgressSpinnerDefaultOptions not found angular/angular#31257
• export 'ParamMap' was not found in '@angular/router' angular/angular#31279

We'll monitor the issue and try to come up with a workaround, if possible.

Edit: Updated to latest working version 0.800.3

[tsvetomir]

Root issue is angular/angular-cli#14876 — not sure why it's closed though. It is still broken in @angular-devkit/[email protected].

[AlexKichkailo]

@tsvetomir yeah, thanks for clarifying. Downgrading to "@angular-devkit/build-angular": "0.800.3", fixes the problem. Please feel free to close this issue if needed.

[tsvetomir]

Seems to be fixed in v0.800.5 and later — see angular/angular-cli#14876 (comment)