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* feat: Aave aToken deposit/withdrawal [TKR-111] (#293) * feat: AaveV2 deposit/withdrawal integration WIP * feat: add basic Aave Reserves cache with data from subgraphs WIP * feat: hook up Aave Reserves integration * fix: set allowance before trade & use ERC20 token interface * refactor: pass aToken to mixin to avoid lookup * fix: migrate from swap/revert to normal sampling * fix: Aave gas estimate & refactor to clean up code * feat: Create a sampler no operation type and make AaveV2Sampler a no-op * fix: Clipper merge conflict resolution issues * fix: don't fetch unnecessary Aave pool data & clean up code * chore: Add changelog entries * feat: cToken deposit/withdrawal [TKR-222] (#294) * feat: first stab at a CompoundSampler implementation * feat: MixinCompound implementation WIP * feat: Compound integration with cache WIP * fix: decimals scaling in CompoundSampler * feat: handle minting and redeeming of cETH * fix: adjust Compound gas schedule * refactor: clean up code and add comments in cToken cache * fix: MixinCompound check allowance on WETH withdrawal & fix indentation * fix: address review comments and clean up code * chore: add changelog entries * feat: enable AaveV2 on Avalanche * chore: add freshly deployed FQT on Polygon, Avalanche * fix: temporarily disable on Ethereum mainnet until we redeploy EP * fix: address PR comments and update changelogs * fix: correct contract-addresses changelog note
0x is an open protocol that facilitates trustless, low friction exchange of Ethereum-based assets. For more information on how it works, check out the 0x protocol specification.
This repository is a monorepo including the 0x protocol smart contracts and numerous developer tools. Each public sub-package is independently published to NPM.
Packages
Visit our developer portal for a comprehensive list of core & community maintained packages. All packages maintained with this monorepo are listed below.
Solidity Packages
These packages are all under development. See /contracts/README.md for a list of deployed packages.
| Package | Version | Description |
|---|---|---|
@0x/contracts-zero-ex |
 |
The contracts used for settling trades within the protocol |
@0x/contracts-erc20 |
 |
Implementations of various ERC20 tokens |
@0x/contracts-test-utils |
 |
TypeScript/Javascript shared utilities used for testing contracts |
@0x/contracts-utils |
 |
Generic libraries and utilities used throughout all of the contracts |
TypeScript/Javascript Packages
0x-specific packages
| Package | Version | Description |
|---|---|---|
@0x/asset-swapper |
 |
Package used to find and create aggregated swaps |
@0x/protocol-utils |
 |
A set of utilities for generating, parsing, signing and validating 0x orders |
@0x/contract-addresses |
 |
A tiny utility library for getting known deployed contract addresses for a particular network. |
@0x/contract-wrappers |
 |
JS/TS wrappers for interacting with the 0x smart contracts |
@0x/migrations |
 |
Migration tool for deploying 0x smart contracts on private testnets |
@0x/contract-artifacts |
 |
0x smart contract compilation artifacts |
Usage
Node version 6.x or 8.x is required.
Most of the packages require additional typings for external dependencies.
You can include those by prepending the @0x/typescript-typings package to your typeRoots config.
"typeRoots": ["node_modules/@0x/typescript-typings/types", "node_modules/@types"],
Contributing
We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
Read our contribution guidelines.
Install dependencies
Make sure you are using Yarn v1.9.4. To install using brew:
brew install yarn@1.9.4
Then install dependencies
yarn install
Build
To build all packages:
yarn build
To build a specific package:
PKG=@0x/asset-swapper yarn build
To build all contracts packages:
yarn build:contracts
Watch
To re-build all packages on change:
yarn watch
To watch a specific package and all it's dependent packages:
PKG=[NPM_PACKAGE_NAME] yarn watch
e.g
PKG=@0x/asset-swapper yarn watch
Clean
Clean all packages:
yarn clean
Clean a specific package
PKG=@0x/asset-swapper yarn clean
Rebuild
To re-build (clean & build) all packages:
yarn rebuild
To re-build (clean & build) a specific package & it's deps:
PKG=@0x/asset-swapper yarn rebuild
Lint
Lint all packages:
yarn lint
Lint a specific package:
PKG=@0x/asset-swapper yarn lint
Run Tests
Run all tests:
yarn test
Run a specific package's test:
PKG=@0x/asset-swapper yarn test
Run all contracts packages tests:
yarn test:contracts