Paraguayan Zod MSISDN / Cellphone Schema Validator

schema.ts

import { z } from "zod";

const paraguayMobileRegex =
  /^(?:(?:\+?595|0)9|9?)(?:8[1-7]|7[1-6]|9[1-5]|6[1-3])\d{6}$/;

export const paraguayPhoneSchema = z
  .string()
  .trim()
  .regex(paraguayMobileRegex, "Número de celular paraguayo inválido")
  .transform((val) => {
    const core8 = val.replace(/\D/g, "").slice(-8); // operator + subscriber, e.g. "8112345"
    const national = `9${core8}`;                    // "981123456"
    return {
      international: `595${national}`, // "595981123456"
      local: `0${national}`,           // "0981123456"
    };
  });

paraguayPhoneSchema.parse("+59598123456");
// { international: "59598123456", local: "0981123456" }

paraguayPhoneSchema.parse("81123456");
// { international: "59598123456", local: "0981123456" }

paraguayPhoneSchema.parse("0981123456");
// { international: "59598123456", local: "0981123456" }
  
function getOperator(e164: string): string {
  const code = e164.slice(5, 7); // two digits after "+5959"
  if (/^8[1-7]$/.test(code)) return "Tigo";
  if (/^7[1-6]$/.test(code)) return "Personal";
  if (/^9[1-5]$/.test(code)) return "Claro";
  if (/^6[1-3]$/.test(code)) return "VOX";
  return "Unknown";
}

getOperator(paraguayPhoneSchema.parse("81123456")); // "Tigo"