jwt-decode/lib/index.js

Decode JWT tokens, mostly useful for browser applications.

'use strict';

var base64_url_decode = require('./base64_url_decode');

module.exports = function (token) {
  if (typeof token !== 'string') {
    throw new Error('Invalid token specified');
  }
  
  return JSON.parse(base64_url_decode(token.split('.')[1]));
};