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Start your next Solidity project with Foundry in seconds
A highly scalable foundation focused on DX and best practices

Features

Sample contracts
Basic Greeter contract with an external interface.
Foundry setup
Foundry configuration with multiple custom profiles and remappings.
Deployment scripts
Sample scripts to deploy contracts on both mainnet and testnet.
Sample Integration, Unit, Property-based fuzzed and symbolic tests
Example tests showcasing mocking, assertions and configuration for mainnet forking. As well it includes everything needed in order to check code coverage.
Unit tests are built based on the Branched-Tree Technique, using Bulloak.
Formal verification and property-based fuzzing are achieved with Halmos and Echidna (resp.).
Linter
Simple and fast solidity linting thanks to forge fmt.
Find missing natspec automatically.
Github workflows CI
Run all tests and see the coverage as you push your changes.
Export your Solidity interfaces and contracts as packages, and publish them to NPM.

Setup

  1. Install Foundry by following the instructions from their repository.
  2. Copy the .env.example file to .env and fill in the variables.
  3. Install the dependencies by running: yarn install. In case there is an error with the commands, run foundryup and try them again.

Build

The default way to build the code is suboptimal but fast, you can run it via:

yarn build

In order to build a more optimized code (via IR), run:

yarn build:optimized

Running tests

Unit tests should be isolated from any externalities, while Integration usually run in a fork of the blockchain. In this boilerplate you will find example of both.

In order to run both unit and integration tests, run:

yarn test

In order to just run unit tests, run:

yarn test:unit

In order to run unit tests and run way more fuzzing than usual (5x), run:

yarn test:unit:deep

In order to just run integration tests, run:

yarn test:integration

In order to just run the echidna fuzzing campaign (requires Echidna installed), run:

yarn test:fuzz

In order to just run the symbolic execution tests (requires Halmos installed), run:

yarn test:symbolic

In order to check your current code coverage, run:

yarn coverage

Deploy & verify

Setup

Configure the .env variables and source them:

source .env

Import your private keys into Foundry's encrypted keystore:

cast wallet import $MAINNET_DEPLOYER_NAME --interactive
cast wallet import $SEPOLIA_DEPLOYER_NAME --interactive

Sepolia

yarn deploy:sepolia

Mainnet

yarn deploy:mainnet

The deployments are stored in ./broadcast

See the Foundry Book for available options.

Export And Publish

Export TypeScript interfaces from Solidity contracts and interfaces providing compatibility with TypeChain. Publish the exported packages to NPM.

To enable this feature, make sure you've set the NPM_TOKEN on your org's secrets. Then set the job's conditional to true:

jobs:
  export:
    name: Generate Interfaces And Contracts
    # Remove the following line if you wish to export your Solidity contracts and interfaces and publish them to NPM
    if: true
    ...

Also, remember to update the package_name param to your package name:

- name: Export Solidity - ${{ matrix.export_type }}
  uses: defi-wonderland/solidity-exporter-action@1dbf5371c260add4a354e7a8d3467e5d3b9580b8
  with:
    # Update package_name with your package name
    package_name: "my-cool-project"
    ...


- name: Publish to NPM - ${{ matrix.export_type }}
  # Update `my-cool-project` with your package name
  run: cd export/my-cool-project-${{ matrix.export_type }} && npm publish --access public
  ...

You can take a look at our solidity-exporter-action repository for more information and usage examples.

Licensing

The primary license for the boilerplate is MIT, see LICENSE