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## @0x/contract-wrappers
Wrappers for 0x smart contracts, generated using @0x/abi-gen.
## Installation
**Install**
```bash
npm install @0x/contract-wrappers --save
```
**Import**
```typescript
import { ContractWrappers } from '@0x/contract-wrappers';
```
If your project is in [TypeScript](https://www.typescriptlang.org/), add the following to your `tsconfig.json`:
```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](../../.github/CONTRIBUTING.md) before getting started.
### Install dependencies
If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
```bash
yarn config set workspaces-experimental true
```
Then install dependencies
```bash
yarn install
```
### Build
To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
```bash
PKG=@0x/contract-wrappers yarn build
```
### Clean
```bash
yarn clean
```
### Lint
```bash
yarn lint
```
### Run Tests
```bash
yarn test
```
### Documentation
Documentation for this package is generated by TypeDoc, using the Solidity source code for 0x contracts. Each contract corresponds to one global-level module, which contains relevant enums and interfaces for its events and structs. Most significantly, each module exports a class, `<ContractName>Contract`, e.g. `ExchangeContract`, which implements helper methods for all the functions defined in the corresponding contract.
A convention to note is that these contract-specific helper methods are defined as _object literals_, which are separated from methods in the generated documentation. Each contract method has a number of sub-methods, e.g. `sendTransactionAsync`, or `estimateGasAsync`, which are documented separately. This is an example of an expected method call signature: `exchangeContractInstance.fillOrder.sendTransactionAsync(...arguments)`.
### Development
This package contains generated code. We use the `abi-gen` utility to generate wrappers from compiler artifacts in `@0x/contract-artifacts`. To re-generate wrappers, e.g. when `@0x/contract-artifacts` has been updated, run `yarn wrappers:generate && yarn wrappers:prettier`.