fix(build): Error: Uncaught (in promise): TypeError: Class constructor Lh cannot be invoked without 'new'

[FrancescoBorzi]

Bug description or feature request:

With es6 enabled, I got this error (only in production):

main.16ed0bb01156b27f659a.bundle.js:1 ERROR Error: Uncaught (in promise): TypeError: Class constructor Lh cannot be invoked without 'new'
TypeError: Class constructor Lh cannot be invoked without 'new'

this is probably similar to: #3134

EDIT:

STEPS TO REPRODUCE:

1. Clone this repo: https://github.com/ShinDarth/angular-test-app
2. npm install
3. ng serve --prod

Versions of ngx-bootstrap, Angular, and Bootstrap:

ngx-bootstrap: ^2.0.0-beta.11

Angular: ^5.1.0

Bootstrap: ^3.3.7

Build system: Angular CLI

Angular CLI: 1.6.0
Node: 8.9.1
OS: linux x64
Angular: 5.1.0
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.6.0
@angular-devkit/build-optimizer: 0.0.35
@angular-devkit/core: 0.0.22
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.0
@schematics/schematics: 0.0.10
typescript: 2.5.3
webpack: 3.10.0

[FrancescoBorzi]

@IlyaSurmay I think this should be marked as urgent since it's quite a serious issue.

I updated the issue report with the repo and steps to reproduce the problem.

[IlyaSurmay]

This may be related to angular/angular-cli#8379

[FrancescoBorzi]

so do you think that's an Angular CLI bug?

[IlyaSurmay]

Actually, no :) I found out that the reason is rxjs. Downgrading it to 5.4.3 is fixing this issue and prod mode with es6 works, checked this with your repo.

[FrancescoBorzi]

Bug still present in:

Angular CLI: 1.6.4
Node: 8.9.1
OS: linux x64
Angular: 5.2.1
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

@angular/cli: 1.6.4
@angular-devkit/build-optimizer: 0.0.37
@angular-devkit/core: 0.0.24
@angular-devkit/schematics: 0.0.45
@ngtools/json-schema: 1.1.0
@ngtools/webpack: 1.9.4
@schematics/angular: 0.1.12
typescript: 2.6.2
webpack: 3.10.0

[valorkin]

Should go away with rxjs 6

[FrancescoBorzi]

@valorkin unfortunately I still get a similar error every time I set es6 as target in tsconfig.json AND I use --prod build.

Angular CLI: 6.1.4
Node: 8.10.0
OS: linux x64
Angular: 6.1.3
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package Version

@angular-devkit/architect 0.7.4
@angular-devkit/build-angular 0.6.8
@angular-devkit/build-optimizer 0.6.8
@angular-devkit/core 0.7.4
@angular-devkit/schematics 0.7.4
@angular/cli 6.1.4
@ngtools/webpack 6.0.8
@schematics/angular 0.7.4
@schematics/update 0.7.4
rxjs 6.2.2
typescript 2.9.2
webpack 4.8.3

[FrancescoBorzi]

might be related to: #4428