7e8b56eef4
* feat: mStable * deploy and CHANGELOG * `@0x/contracts-utils`: Add more testnet addresses. * `@0x/contract-addresses`: Deply Mstable on testnets * `@0x/contract-addresses`: Remove testnet deployments of mStable :-) * move `erc20-bridge-sampler` into `asset-swapper` remove `DevUtils` dependency from sampler contract. * `@0x/asset-swapper`: Add ERC20BridgeSampler support for validating orders in maker fees denominated in non-maker assets. `@0x/asset-swapper`: Add tests for `NativeOrderSampler`. * `@0x/asset-swapper`: Return `0` sample if native order asset data is unsupported. * `@0x/asset-swapper`: Fix failing test. * feat: ExchangeProxy FQT fruit rollup (#2645) * feat: Optimize Bridges in ExchangeProxy * compile and most work * work around to trust the delecall contract * force allowances * Update Kyber/Eth2Dai bridges * Remove memory state where not required * cleanup * Combine Bridges into one adapter * mixins * refactor out ZeroExBridge * move out interface * comment out hacks * update migrations * remove simbot hacks * AdapterAddresses and mStable * Share constructor arg * fix migration * Remove whitespace * `@0x/contracts-zero-ex`: BridgeAdapter -- revert if bridge address is 0. * `@0x/contract-addresses`: Deploy FQT. Co-authored-by: Lawrence Forman <me@merklejerk.com> Co-authored-by: Lawrence Forman <lawrence@0xproject.com> * update ganache contract addresses * fix: asset-swapper empty batch call (#2669) * update ganache contract addresses * fix: asset-swapper prevent empty sampler batch call * add sampler to migrations * change migrations version * Use contract-wrappers and artifacts * remove extra data * remove deps, set sampler to NULL_ADDRESS * all the exports * noop sell rate too * update ganache contract addresses Co-authored-by: Lawrence Forman <me@merklejerk.com> Co-authored-by: Lawrence Forman <lawrence@0xproject.com>
@0x/asset-swapper
Convenience package for swapping assets represented on the Ethereum blockchain using 0x. The package helps to perform all the off-chain computations to execute a marketBuy or marketSell function execution with 0x exchange contracts, or 0x extension contracts. Given some liquidity (0x signed orders), it helps estimate the cost of buying or selling a certain asset (giving a range) and then provide varying consumable outputs to execute the buy or sell.
Asset-swapper integrates with the Standard Relayer API(in the future Mesh as well) and takes care of sourcing liquidity, order-pruning, and order-validation. The final result is a library that tells you what assets are available, provides a quote based on specified assets, and provide varying consumable metadata that can be used both on-chain in smart contracts or off-chain through web3 to swap a desired amount of ERC20 for another ERC20 asset.
Installation
yarn add @0x/asset-swapper
Import
import { SwapQuoter } from '@0x/asset-swapper';
or
var SwapQuoter = require('@0x/asset-swapper').SwapQuoter;
var SwapQuoteConsumer = require('@0x/asset-swapper').SwapQuoteConsumer;
If your project is in TypeScript, add the following to your tsconfig.json:
"compilerOptions": {
"typeRoots": ["node_modules/@0x/typescript-typings/types", "node_modules/@types"],
}
Contributing
We welcome improvements and fixes from the wider community! To report bugs within this package, please create an issue in this repository.
Please read our contribution guidelines before getting started.
Install dependencies
If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
yarn config set workspaces-experimental true
Then install dependencies
yarn install
Build
To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
PKG=@0x/asset-swapper yarn build
Or continuously rebuild on change:
PKG=@0x/asset-swapper yarn watch
Clean
yarn clean
Lint
yarn lint
Run Tests
yarn test