rxjs | A reactive programming library for JavaScript | Reactive Programming library

Apparently throwError(error) is now deprecated. The IntelliSense of VS Code suggests throwError(() => new Error('error'). new Error(...) accepts only strings. What's the correct way to replace it without breaking my HttpErrorHandlerService ?

I'm trying to connect my app with a firebase db, but I receive 4 error messages on app.module.ts:

When I try to run command ng lint --fix cli throws this error:

Imagine a service ABService with a method isAResponsible: () => boolean and two modules: AModule and BModule.

The question is: Is it possible to switch between AModule and BModule depending on what isAResponsible returns? And how do we 'reroute' and rerender if the value of isAResponsible changes? ABService may have several dependencies to other services so it would be preferable to make use of the DI system somehow.

Example: If the route of interest is /aorb and ABService.isAResponsible returns true, than we would like to route AModule. If ABService.isAResponsible returns false however we want BModule to manage further routing. Note that everything should happen on a shared route.

I tried it with guards and canActivate/canLoad but didn't succeed:

Note: I think I was able to to reproduce this (see stackblitz example). The error there is printed in the console as "INTERNAL ASSERTION FAILED: Expected a class definition". This is different to what I get locally but to me this looks like the same issue.

Anyway, just comment out line 15 in app.component.ts and the error will disappear.

I am trying to get started with Firebase but when I install & compile the Angular project I am getting the following error:

Module not found: Error: Package path ./compat is not exported from package /home/sfalk/workspaces/web-mobile/node_modules/firebase (see exports field in /home/sfalk/workspaces/web-mobile/node_modules/firebase/package.json)

The interesting thing is that I am only getting this error when I am injecting my AuthService e.g. like this:

After migrating my angular 6 project to 12. I am getting multiple warning in terminal

if in angular.json i set optimisation: false configuration then all issue get resolved but i don't want to make this changes it should be true only.

with optimisation: true i am getting all these warnings:-

Earlier same code was working fine without any warning.

I updated rxjs from version 6.x.x to 7.x.x, but following error appeared:

Error in src/app/app.component.ts (12:19) Expected 1 arguments, but got 0.

when trying to next an empty value to the Subject

Hello developers i have been literally the whole day trying to implement charts on my proyect , but following the official docs there is not way i could rid off this error :

I've ran into an issue running npm start (I've attached the screenshot of the error bellow) on my Angular project.

When I run the project using ng serve, everything is working fine.

I have tried several ways to fix this issue without success.

This is my package.json file: