expireJWT.js

// Assumes jwt-client has been loaded to define JWT global
(function expireJWT() {
  JWT.defaults = {key: 'jwt', tokenPrefix: '', storage: window.localStorage, padding: false};
  decodedJWT = JWT.read(JWT.get());
  decodedJWT.claim.exp = (Date.now() / 1000) - 1;
  JWT.keep(decodedJWT);
})();