npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

sunat-utils

v1.2.1

Published

Utilidades para validar RUC, DNI y cálculos tributarios en Perú con TypeScript.

Readme

sunat-utils

npm version npm downloads bundle size Security

Utilidades modernas para trabajar con datos de SUNAT en Perú usando JavaScript y TypeScript.


✨ Características

  • Validación de RUC (módulo 11)
  • Validación de DNI y CE
  • Detección de tipo de contribuyente
  • Cálculo de IGV (agregar, remover, breakdown)
  • Cálculo de detracciones
  • Normalización de inputs (RUC/DNI)
  • Catálogos SUNAT tipados
  • Formateo de moneda (PEN)
  • TypeScript nativo

📦 Instalación

npm install sunat-utils

🚀 Uso

import {
  isValidRUC,
  isValidDNI,
  isValidCE,
  getRUCType,
  addIGV,
  removeIGV,
  getIGVBreakdown,
  calculateDetraction,
  normalizeRUC,
  formatCurrency,
  getDocumentName
} from "sunat-utils";

// Validaciones
isValidRUC("20100070970"); // true
isValidDNI("12345678"); // true
isValidCE("ABC123456"); // true

// Tipo de RUC
getRUCType("20100070970"); // "empresa"

// IGV
addIGV(100); // 118
removeIGV(118); // 100

getIGVBreakdown(118);
// { net: 100, igv: 18, total: 118 }

// Detracciones
calculateDetraction(1000, "transporte");
// { rate: 0.04, detraction: 40, net: 960 }

// Normalización
normalizeRUC("20-12345678-9"); // "20123456789"

// Formato
formatCurrency(1200); // "S/ 1,200.00"

// Catálogos
getDocumentName("01"); // "Factura"

📚 API

🔍 Validadores

isValidRUC

Valida un RUC peruano usando módulo 11 y prefijos válidos.

isValidRUC(ruc: string): boolean

isValidDNI

isValidDNI(dni: string): boolean

isValidCE

isValidCE(ce: string): boolean

🏢 RUC

getRUCType

getRUCType(ruc: string): 
  | "persona_natural"
  | "empresa"
  | "entidad_publica"
  | "otro"
  | null

calculateRUCDigit

calculateRUCDigit(base: string): number

💰 Impuestos

addIGV

addIGV(amount: number): number

removeIGV

removeIGV(amount: number): number

getIGVBreakdown

getIGVBreakdown(amount: number): {
  net: number;
  igv: number;
  total: number;
}

calculateDetraction

calculateDetraction(
  amount: number,
  type: "transporte" | "servicios" | "construccion"
): {
  rate: number;
  detraction: number;
  net: number;
}

🧹 Normalización

normalizeRUC

normalizeRUC(input: string): string

normalizeDNI

normalizeDNI(input: string): string

🏷️ Catálogos

DOCUMENT_TYPES

Catálogo de tipos de comprobantes SUNAT.

getDocumentName

getDocumentName(type: string): string

💵 Formato

formatCurrency

formatCurrency(amount: number): string

🧪 Tests

Este proyecto usa el runner nativo de Node.js (node:test).

npm run build
npm test

📜 Changelog

Ver historial de cambios en CHANGELOG.md


🤝 Contribuir

Las contribuciones son bienvenidas 🙌

Revisa:


🔐 Seguridad

Si encuentras una vulnerabilidad, revisa:


⚠️ Disclaimer

Esta librería no es oficial ni está afiliada a ninguna entidad del Estado. Es una herramienta independiente para facilitar el desarrollo en Perú.

No garantiza cumplimiento legal ante auditorías. Siempre valida resultados con un profesional contable.


📄 Licencia

MIT


👨‍💻 Autor

Franco Caballero