Hardhat plugin for smart contracts on Polkadot

Compatibility

Not compatible with solidity versions lower than 0.8.0.

Installation

Using npm:

$ npm install -D @parity/hardhat-polkadot

Using yarn:

$ yarn add -D @parity/hardhat-polkadot

Using pnpm:

$ pnpm add -D @parity/hardhat-polkadot

Configuration

Import the package in the hardhat.config.ts file:

...
import "@parity/hardhat-polkadot";
...

Create 2 binaries - One for the node and another for the ETH-RPC adapter. See step 1. of Deploying with a Local Node.
Example configuration in hardhat.config.ts

const config: HardhatUserConfig = {
  networks: {
    hardhat: {
      polkavm: true,
      nodeConfig: {
        nodeBinaryPath: 'INSERT_PATH_TO_SUBSTRATE_NODE',
        rpcPort: 8000,
        dev: true,
      },
      adapterConfig: {
        adapterBinaryPath: 'INSERT_PATH_TO_ETH_RPC_ADAPTER',
        dev: true,
      },
    },
  },
  resolc: {
    version: "1.5.2",
    compilerSource: "npm",
  },
};

Usage

Get started from a boilerplate.

$ npx hardhat-polkadot init

Compile solidity smart contracts for the Polkadot network, creating PolkaVM compatible hardhat artifacts.

$ npx hardhat compile

Test smart contracts locally. Instructions in Testing Your Contract.

$ npx hardhat test

Deploy smart contracts locally or to a Live Network. Instructions in Deploying with a Local Node and Deploying to a live Network.

$ npx hardhat ignition deploy ./ignition/modules/deploy.js

Run custom scripts locally or on a Live Network. Instructions in Interacting with Your Contract.

$ npx hardhat run scripts/interact.js

Documentation

See Examples.
Learn how to use Hardhat with Polkadot in Develop -> Smart Contracts -> Dev Environments -> Hardhat.
Follow tutorial in Tutorials -> Smart Contracts -> Launch Your First Project -> Test and Deploy with Hardhat.

JSPM

@parity/hardhat-polkadot

Package Exports

Readme