[JS] deep copy

import { catchError, of } from 'rxjs';

export function deepCopy(obj: any): any {
  if (Array.isArray(obj)) {
    return obj.map((item) => deepCopy(item));
  } else if (typeof obj === 'object' && obj !== null) {
    const newObj = {};
    for (const key in obj) {
      (newObj as any)[key] = deepCopy(obj[key]);
    }
    return newObj;
  } else {
    return obj;
  }
}

export function handleHttpError(errorMessage: string) {
  return catchError((error) => {
    console.error(errorMessage, error);
    return of(null);
  });
}