Verificar Id de Firebase - Expresion Regular REGEX para comprobar si un ID es un FirebaseId válido

verify-firebase-id.ts

import { ValidatorConstraint, ValidatorConstraintInterface } from 'class-validator';

const FIRESTORE_ID_REGEX = /^[a-zA-Z0-9_-]{20}$/;

@ValidatorConstraint({ name: 'isFirestoreId', async: false })
export class IsFirestoreId implements ValidatorConstraintInterface {
  validate(id: string) {
    return FIRESTORE_ID_REGEX.test(id);
  }

  defaultMessage() {
    return 'Invalid Firestore document ID';
  }
}