var JsonWebTokenError = function (message, error) { Error.call(this, message); if(Error.captureStackTrace) { Error.captureStackTrace(this, this.constructor); } this.name = 'JsonWebTokenError'; this.message = message; if (error) this.inner = error; }; JsonWebTokenError.prototype = Object.create(Error.prototype); JsonWebTokenError.prototype.constructor = JsonWebTokenError; module.exports = JsonWebTokenError;