error TS2451: Cannot redeclare block-scoped variable 'ngDevMode'

I’m submitting a…

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x ] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Current behavior

node_modules/@angular/core/src/render3/ng_dev_mode.d.ts(9,11): error TS2451: Cannot redeclare block-scoped variable ‘ngDevMode’. node_modules/adv-view-js-comp-core/node_modules/@angular/core/src/render3/ng_dev_mode.d.ts(9,11): error TS2451: Cannot redeclare block-scoped variable ‘ngDevMode’. declare global { const ngDevMode: boolean; } export declare const _ngDevMode: boolean; export {};

Expected behavior

Minimal reproduction of the problem with instructions

What is the motivation / use case for changing the behavior?

Environment

Angular version: 5.2.1


Browser:
- [ ] Chrome (desktop) version XX
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX
 
For Tooling issues:
- Node version: XX  
- Platform:  Windows

Others:

[avatsaev]

had to add this line in the main tsconfig

[vicb]

Closing as no proper repro. I would really help if someone could create a new issue with a proper repro. Thanks.