The 'jsrsasign' (RSA-Sign JavaScript Library) is an opensource free cryptography library supporting RSA/RSAPSS/ECDSA/DSA signing/validation, ASN.1, PKCS#1/5/8 private/public key, X.509 certificate, CRL, OCSP, CMS SignedData, TimeStamp, CAdES and JSON Web Signature/Token in pure JavaScript.
RFC 3161 (https://tools.ietf.org/html/rfc3161) specifies the tsa of a timestamp as
The tsa name encoded in asn1tsp-1.0.js line 368 is neither tagged and nor a GeneralName.