alxiong / monorepo

Home for all packages related to the Counterfactual project

Counterfactual

Simple off-chain applications framework for Ethereum.

Counterfactual is a simple off-chain framework for building state channel applications on top of the Ethereum blockchain. It aims to make it simpler to build permissionless applications that have instant finality with zero-fee transactions.

You can learn more about what state channels are by reading our whitepaper or a less technical written description. Further, if you want to dive into the specifications of the Counterfactual protocol you can read them here.

🚨 WARNING: the code found here has been created for demonstration and example purposes, with developers looking to build state channel applications as the intended audience and user-base. This code is not yet intended for production use with real funds, assets or users. In particular, specific safety measures have been intentionally omitted from this early version for the sake of simplicity, and various pieces of its architecture (e.g., the messaging layer) use trust assumptions that, while appropriate to a "playtesting" development environment, would have serious consequences if used to protect actual assets in the real world. This framework, once further developed, finalized, and hardened, is intended to eventually become a tool that will be used in production deployments. If you have those use cases in mind we welcome your participation and feedback now, to ensure that early production versions will meet your needs. But please don't deploy this framework in its current form. That is not its intended use.

• Packages
  • Solidity Packages
  • Typescript/Javascript Packages
• Contributing
  • Installing dependencies
  • Building packages
  • Clean
  • Lint
  • Tests
  • Patches

Packages

Solidity Packages

Package	Version	Description
@counterfactual/contracts		Core implementation of on-chain state resolution mechanisms

Typescript/Javascript Packages

Counterfactual-specific packages

Package	Version	Description
@counterfactual/node		The core state channels client that a user runs
@counterfactual/cf.js		A JS API for interacting with off-chain apps
@counterfactual/node-provider		Wrapper around API calls to a Node
Utilities

Package	Version	Description
@counterfactual/types		Shared type declarations
@counterfactual/typescript-typings		Shims for external library typings

Contributing

• Join us in Discord to help with development or to hang out with some ethereum hackers :)
• Create a new issue to report bugs
• Fix an issue. Counterfactual is an Open Source Project!

Ethereum Networks

The Playground currently only supports the Kovan network.

Installing dependencies

Make sure you have Yarn v1.10.1 installed or higher. Refer to Yarn's installation guide for setup instructions for your operating system.

To install the dependencies:

yarn

Building packages

It is recommended (optional) that you installed solc compiler binary on your machine (installation guide) and specify the following in your .env under contracts and apps

NATIVE_SOLC=true

To build all packages:

yarn build

Clean

To clean all packages:

yarn clean

Lint

To lint all packages:

yarn lint

To also apply automatic fixes:

yarn lint:fix

Tests

To run all tests:

yarn test

Patches

We generate patches using the patch-package tool with a workaround described in this issue for yarn workspaces.