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https://github.com/Soltsice/Soltsice

Solidity & TypeScript Integration, Configuration and Examples
https://github.com/Soltsice/Soltsice

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Solidity & TypeScript Integration, Configuration and Examples

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# [Soltsice](https://github.com/Soltsice/Soltsice)



**Sol**idity & **T**ype**S**cript **I**ntegration, **C**onfiguration and **E**xamples



With Soltsice you could generate strongly-typed TypeScript proxies for Ethereum contracts from Solidity ABI with a single command. You could also send raw signed transactions to public Ethereum nodes such as [Infura](https://infura.io/) just by adding an optional private key parameter to any method. Soltsice provides convenient utilities for storing key files, for signing arbitrary data for later address recovery with `ecrecover` functions from contracts code and for other frequent tasks. Finally, Soltsice has `MultiOwnable` and `BotManageable` contracts for granular access control for MultiSig majority, individual owners and backend accounts.



## Quick links



- [Soltsice](#soltsice)

  - [Quick links](#quick-links)

  - [Features](#features)

    - [Solidity ABI to TypeScript contract generation](#solidity-abi-to-typescript-contract-generation)

      - [Methods](#methods)

      - [Events](#events)

      - [Type safety and easy refactoring](#type-safety-and-easy-refactoring)

      - [Fast API discovery & Intellisense support](#fast-api-discovery--intellisense-support)

      - [Isomorphic NPM packages for contracts](#isomorphic-npm-packages-for-contracts)

    - [Transactions and custom data signing](#transactions-and-custom-data-signing)

      - [Using remote public nodes is easy](#using-remote-public-nodes-is-easy)

      - [Micropayments state channels example](#micropayments-state-channels-example)

    - [Private key management](#private-key-management)

      - [Security considerations](#security-considerations)

      - [Local key file storage](#local-key-file-storage)

    - [Contracts for access control](#contracts-for-access-control)

      - [MultiOwnable: MultiSig majority and individual owner access](#multiownable-multisig-majority-and-individual-owner-access)

      - [BotManageable: account managed by backend](#botmanageable-account-managed-by-backend)

    - [Utilities](#utilities)

      - [W3 module](#w3-module)

      - [Ethereum Utils](#ethereum-utils)

      - [Keythereum](#keythereum)

      - [Storage contract](#storage-contract)

      - [`soltsice` code generator from code](#soltsice-code-generator-from-code)

    - [Work in progress](#work-in-progress)

  - [Getting started](#getting-started)

    - [Install & Usage](#install--usage)

      - [Workflow](#workflow)

    - [Starter projects](#starter-projects)

      - [Contracts starter](#contracts-starter)

      - [Frontend with CRA & TypeScript](#frontend-with-cra--typescript)

      - [Backend API with Swagger](#backend-api-with-swagger)

  - [Examples](#examples)

    - [Dbrain contracts](#dbrain-contracts)

    - [Dbrain blockchain API](#dbrain-blockchain-api)

    - [Dbrain DApp prototype](#dbrain-dapp-prototype)

  - [Contributing](#contributing)

    - [Build](#build)

    - [License](#license)



---



## Features



### Solidity ABI to TypeScript contract generation



With Soltsice you could generate strongly-typed TypeScript proxies for Ethereum contracts from Solidity ABI with a single command. 



#### Methods



TODO



#### Events



TODO



#### Type safety and easy refactoring



The initial purpose of this library was to have peace of mind and type safety when working with rapidly changing Solidity ABI. TypeScript proxies for contracts allow to use powerful intellisense feature of code editors.



*Methods with signatures*



Methods with signatures



*Typed Constructor*



Typed Constructor



#### Fast API discovery & Intellisense support



TODO



#### Isomorphic NPM packages for contracts



TODO



### Transactions and custom data signing



TODO



#### Using remote public nodes is easy



TODO Problem: Geth 1.8 added pruning, but still long-running nodes grow in side. Standard BizSpark subscription cannot keep up, needs more resources.



TODO Deploy via migrations using contracts, showcase @ts-check attribute in VSCode



#### Micropayments state channels example



TODO



### Private key management



TODO



#### Security considerations



TODO



#### Local key file storage



TODO



Note that the format is standard one so you could import existing key files just by providing a filepath and password.



[top](#quick-links)



### Contracts for access control



TODO



#### MultiOwnable: MultiSig majority and individual owner access



TODO



#### BotManageable: account managed by backend



TODO



### Utilities



TODO



#### W3 module



TODO



#### Ethereum Utils



TODO 



Typings



#### Keythereum



TODO



#### Storage contract



TODO



#### `soltsice` code generator from code



TODO



### Work in progress



TODO



[top](#quick-links)



---



## Getting started



Installing and using Soltsice is very easy. You could just add `soltsice` NPM package to your existing project or use a starter project for new development.



### Install & Usage



You must have `truffle` and `copyfiles` installed globally:



> npm install -g truffle copyfiles



Install and save Soltsice:



> npm install soltsice --save



Soltsice allows to generate TypeScript files for Ethereum contracts with the command:



> soltsice ./artifacts ./types



All `.json` artifacts from `truffle compile` in the folder `artifacts` will be transformed into TypeScript classes in 

`types` with a single `index.ts` file with all exports.



Every TypeScript contract class inherits `SoltsiceContract`, which is a wrapper over [Truffle-contract](https://github.com/trufflesuite/truffle-contract) with methods generated from ABI.

If some functionality is not yet supported by Soltsice, you may use `SoltsiceContract._instance : Promise` field to access untyped Truffle-contract instance.



You could import generated types as:



```

import { W3 } from "soltsice";

import { BigNumber } from "bignumber.js";

import { StandardToken } from "./types";



// default wrapper for web3: either window['web3'] if present,

// or http provider connected to localhost: 8545, if not running on https 

let w3: W3 = new W3();



// null for ctor params which are only used for newly deployed contracts

let st: StandardToken = new StandardToken("address of deployed contract", null, w3);



// note that typings are optional in variable definitions, TypeScript infers types

let supply: Promise = st.totalSupply();



supply.then(value => {

    console.log("TOTAL SUPPLY", value.dividedBy(1e18).toFormat(0));

});



```



See [dbrain-contracts](https://github.com/Soltsice/dbrain-contracts) and [dbrain-blockchain-api](https://github.com/Soltsice/dbrain-blockchain-api) projects that use this library and a standalone minimal example [here](https://github.com/buybackoff/SoltsiceExample).



#### Workflow



* Edit Solidity contracts, run `truffle compile`, run tests on Truffle stack (solidity or js, if any)

* Run Soltsice command `soltsice ./src ./dest`, all TypeScript contracts will be updated, any API changes will block subsequent TS compilation

  (except for rare edge cases such as multiple return parameters which are returned as an array and we use `any` TS type for them)

* Adjust you code to the changes.



### Starter projects



TODO



#### Contracts starter



TODO A starter project with the shortest path to deploy



#### Frontend with CRA & TypeScript



TODO Use the contract starter package from DApp starter (dbrain-dapp structure)



#### Backend API with Swagger



TODO Use the contract starter from backend (dbrain-blockchain-api structure)



[top](#quick-links)



---



## Examples



TODO



### Dbrain contracts



TODO 

https://github.com/Soltsice/dbrain-contracts

State channels + in-memory off-chain signing mock



### Dbrain blockchain API



TODO

https://github.com/Soltsice/dbrain-blockchain-api

Off-chain signing prototype on Postgres



### Dbrain DApp prototype



TODO



[top](#quick-links)



---



## Contributing



If [some functionality](#work-in-progress) is not supported yet you are very welcome to open an issue or pull request!



### Build



To build & test run the following commands:



```

npm install

npm run build:contracts

npm run soltsice

npm test

```



### License



MIT



(c) 2018 Dbrain.io