etherts is an Ethereum implementation in Typescript. It aims to provide libraries to help dealing with:
- basic cryptography primitives (private key to public key conversion, signature creation and signature verification),
- key management and conversion (between different wallet formats),
- contract ABI encoding/decoding,
- and likely more features.
To achieve some of these goals, it may rely on third party (but proven and well tested) Ethereum Javascript libraries, such as ethjs and ethereumjs, augmenting them with a Typescript definition.
The end goal is to
- provide a developer friendly, but better-than-Javascript, implementation
- be compatible with AssemblyScript and as a result with potential ewasm contracts
Why not just keep improving ethereumjs? Good question. Some parts of it have been only patched over the years to keep up with the changes and weren't nicely designed to begin with. As a result, a lot of code could be rewritten and rewriting in TypeScript gives the added benefit of type security.