Using IOV-Core Client

While the blockchain code is in the Go language, we have developed a TypeScript (javascript-compatible) client side sdk in order to access the functionality of the blockchain. Iov-Core works for many blockchains, not just weave (mycoind and bnsd), so take a look, it is useful for more than this demo

Installing Tooling

You will need node 8+ to run the example client. Unless you know what you are doing, stick to even numbered versions (6, 8, 10, …), the odd numbers are unstable and get deprecated every few weeks it seems. For ease of updating later, I advise you to install nvm and then add the most recent stable version

# this install most recent v8 version, use lts/dubnium for v10 track
nvm install lts/carbon

# test it out
node --version
node
> let {x, y} = {x: 10, y:10}

Node related tools

Yarn is a faster alternative to npm for installing modules, so we use that as default.

npm install -g yarn

Using Iov-Core

Please refer to the offical iov-core documentation Note that you can use the BnsConnection to connect to a mycoind blockchain, as long as you restrict it to just sending tokens and querying balances and nonces (it is a subset of bnsd). You may also find iov-cli a useful debug tool. It is an enhanced version of the standard node REPL (interactive coding shell), but with support for top-level await and type-checks on all function calls (you can code in typescript).

The iov-core library supports the concept of user profiles and identities. An identity is a BIP39 derived key. Please refer to those docs and tutorials for a deeper dive, it is out of the scope of the weave documentation.