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@koph-npm/browser-jwt

v0.0.2

Published

> Utilitários para manipulação de JWTs no navegador, com suporte a validação de expiração e geração simplificada.

Downloads

67

Readme

@koph-npm/browser-jwt

Utilitários para manipulação de JWTs no navegador, com suporte a validação de expiração e geração simplificada.

Este pacote oferece funções para decodificar, verificar validade e gerar JSON Web Tokens (JWT) diretamente no navegador, sem dependências externas.


📦 Instalação

npm install @koph-npm/browser-jwt

🚀 Uso básico

import { jwt } from '@koph-npm/browser-jwt';

const token = jwt.encode({ user: 'john' });

const decoded = jwt.decode(token);
console.log(decoded.payload.user); // "john"

🧠 API

jwt.decodeOnly(token: string): TDecoded | null

Decodifica o JWT (header + payload), sem verificar validade. Retorna null se malformado.

jwt.decode(token: string, timeSkew = 15): TDecoded

Decodifica e valida o token (verifica expiração). Lança JsonWebTokenError ou TokenExpiredError se inválido.

jwt.encode(data: object, lifeSpan = 5): string

Gera um JWT simples (sem assinatura) com tempo de vida definido em minutos.

jwt.verify(decoded: TDecoded, timeSkew = 15): TDecoded

Verifica validade de um token decodificado (baseado na propriedade exp).

jwt.isExpired(exp: number, timeSkew = 15): boolean

Retorna true se o token estiver expirado.


⚠️ Observações

  • Este JWT é não assinado (alg: "none") e deve ser usado apenas em ambientes controlados (ex.: testes).
  • A verificação de expiração suporta tolerância configurável (timeSkew).
  • Em ambiente de desenvolvimento (NODE_ENV=development), é possível forçar a expiração com localStorage.setItem('jwtExpired', '1').

📄 Licença

MIT


👤 Autor

Koph [email protected]


🔗 Repositório

https://github.com/koph-git/ts-lib