hardhat-starknet-compile

A plugin for hardhat which compiles your StarkNet contracts for you.

How it Works

When you run a script with Hardhat (e.g. npx hardhat run scripts/deploy.ts), Hardhat automatically runs the compile task which compiles any Solidity contracts which have changed since the last time compilation occurred. This plugin creates a new task called starknet-compile which does the same thing for your StarkNet contracts (compiles them, but only the ones which have changed since the last time the task was run). It also extends Hardhat's compile task so that it runs starknet-compile straight after, this means that whenever you run a script with Hardhat, both your Solidity and StarkNet contracts will be compiled.

Installation

Install with npm:

npm i --save-dev @playmint/hardhat-starknet-compile

Then import in your hardhat.config file:

import "@playmint/hardhat-starknet-compile";

How to use

• run a script and your StarkNet contracts will be automatically compiled if necessary (e.g. npx hardhat run scripts/deploy.ts), or
• run the compile task (npx hardhat compile), or
• run the starknet-compile task (npx hardhat starknet-compile)

The artifacts created can be used with StarkNet.js, or with starknet-hardhat-plugin.

Only contracts which have changed (or their dependencies have) will be compiled, if you want to force a contract to recompile you can delete its .json files which will be in the Starknet artifacts directory, or delete the cairo files cache.

If you use a python venv for your starknet development environment, make sure you launch vscode from your venv.

Using with starknet-hardhat-plugin

This plugin can be used alongside starknet-hardhat-plugin, the artifacts it outputs are in a compatible layout such that starknet-hardhat-plugin will find them for contract factories etc. The only thing to know is that you should import hardhat-starknet-compile after starknet-hardhat-plugin, this is because both of these plugins define a task called starknet-compile, so if you import them in the wrong order then the version of starknet-compile that is executed will be the one from starknet-hardhat-plugin which compiles all StarkNet contracts regardless of whether they've changed or not.

Configuration

By default the plugin will look for Starknet contracts in Hardhat's sources path (by default this is contracts). You can change this in your Hardhat config by setting starknetSources in paths.

By default the plugin will save build artifacts of Starknet contracts to artifacts-starknet, you can change this in your Hardhat config by setting starknetArtifacts in paths.

When the starknet compiler is invoked, the working directory used is the root directory of the project. The plugin passes the Starknet sources path as --cairo_path, but you can add extra paths to this in your Hardhat config by adding them to cairoPath in paths.

import { HardhatUserConfig } from "hardhat/types";
import "@playmint/starknet-hardhat-compile";


const config: HardhatUserConfig = {
    paths: {
        starknetSources: "starknetContracts",
        starknetArtifacts: "artifactsDir",
        cairoPath: ["starknet-libs", "thirdparty-starknet-libs"]
    }
}

export default config;