feat: Generate typescript clients automagically!

[octalmage]

Apologies for this giant PR, it seems larger than it really is since I'm including a couple of modified npm packages.

This PR adds a new command, terrain contract:generateClient [contract name]. When you run this command Terrain will generate a wallet provider and Terra.js compatible library you can import into automation scripts, tests, or your frontend to interact with your smart contracts.

Lets say you have a smart contract named "party", to generate the client you will run:

terrain contract:generateClient party

This will output PartyClient.ts in ./lib/clients/PartyClient.ts.

Using the generated client is easy. Import it where you'd like to call your smart contract, instantiate it will a few parameters, then start calling methods or queries exposed by the smart contract:

import { PartyClient } from './contract/clients/PartyClient';

const contract = new PartyClient(lcd, wallet, 'terra14khjxsvmklm8kg97vhrn5wc2tz3w57na5seeke3qnwashe4pxd3qmljkek');
await contract.increment();
console.log(await contract.getCount());

Generated clients accept a configured LCDClient, a Wallet instance, and the address to the deployed contract.

[octalmage]

can't forget to set this back!

[github-advanced-security]

Found 99 potential problems in the proposed changes. Check the Files changed tab for more details.

[octalmage]

When reviewing I'd recommend starting here: https://github.com/terra-money/terrain/pull/97/files#diff-c189f236d6e2a2b55daa0229225e3283b0d61abd993ae3aecad63bbb5ba9a885

Ignore the packages directory as much as possible, there's a lot of boilerplate in there.

[github-advanced-security]

Found 99 potential problems in the proposed changes. Check the Files changed tab for more details.

[emidev98]

Good name! What do you think about having a generate folder with client (or types) as it's own entry point? To have a syntax like terrain contract:generate:client party instead of terrain contract:generateClient party.

If we apply this suggestion I will create an issue to also modify terrain contract:updateAdmin

[emidev98]

Cool feature! Looking forward to use it in my projects!

[github-advanced-security]

Found 99 potential problems in the proposed changes. Check the Files changed tab for more details.