Capturing Unhandled Application Exceptions with a Custom Global ErrorHandler

import { ErrorHandler, Injectable, inject } from '@angular/core';
import { HttpErrorResponse } from '@angular/common/http';
import { LoggingService } from './logging.service';
 
@Injectable()
export class GlobalApplicationErrorHandler implements ErrorHandler {
  private readonly logger = inject(LoggingService);
 
  public handleError(error: unknown): void {
    if (error instanceof HttpErrorResponse) {
      this.logger.logHttpFailure(`Status: ${error.status} - ${error.message}`);
      return;
    }
 
    if (error instanceof Error) {
      this.logger.logFatalCrash({
        name: error.name,
        message: error.message,
        stack: error.stack ?? 'No stack trace available'
      });
      return;
    }
 
    this.logger.logUnknown(String(error));
  }
}