The Verificatum TypeScript library (VTS) is in pure TypeScript with zero dependencies.
We refer the reader to the VTS GitHub repository to download the software.
VTS is a manual transpilation and improvement of the deprecated Verificatum JavaScript Crypto Library (VJSC). It has a more powerful API, it is faster, and has much cleaner code due to modern language constructs that were introduced after VJSC was written.
As far as we know it is the fastest, most thoroughly tested, and best documented TypeScript library of its kind, and it has minimal memory requirements.
We are currently looking for a sponsor to release VTS under MIT license.