jwt-node-decoder/lib/index.js

Decodes JWT (JSON Web Token) and checks expiration date. A Node port of angular-jwt.

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.isTokenExpired = exports.getTokenExpirationDate = exports.decodeToken = undefined;

var _jwtDecode = require('jwt-decode');

var _jwtDecode2 = _interopRequireDefault(_jwtDecode);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

var decodeToken = _jwtDecode2.default;

function getTokenExpirationDate(token) {
  var decoded = (0, _jwtDecode2.default)(token);
  if (decoded.exp == null) {
    return null;
  }

  var d = new Date(0); // The 0 here is the key, which sets the date to the epoch
  d.setUTCSeconds(decoded.exp);

  return d;
}

function isTokenExpired(token, offsetSeconds) {
  var d = getTokenExpirationDate(token);
  if (d == null) {
    return false;
  }

  // Token expired?
  return !(d.valueOf() > new Date().valueOf() + (offsetSeconds || 0) * 1000);
}

exports.decodeToken = decodeToken;
exports.getTokenExpirationDate = getTokenExpirationDate;
exports.isTokenExpired = isTokenExpired;
exports.default = {
  decodeToken: decodeToken,
  getTokenExpirationDate: getTokenExpirationDate,
  isTokenExpired: isTokenExpired
};