Hardhat Injective Starter Template

Lean Hardhat starter for compiling, testing, deploying, verifying, and interacting with EVM smart contracts on Injective Testnet.

Stack: Hardhat · Solidity · Ethers · Blockscout · Injective EVM

Quick Start

Use this repository as a template.

• On GitHub, press the "Use this template" button.
• In the dropdown, select "Create new repository"
• Fill in the form, then press the "Create repository"
• You should now have a copy of the template repo in your own Github account or organisation
• Click on the "<> Code" button
• In the dropdown, select the "Local" tab, then copy the git URL

Install dependencies and configure your environment:

git clone https://github.com/${YOUR_GITHUB}/hardhat-injective-template.git hardhat-injective-template
cd hardhat-injective-template
npm install
cp .env.example .env

Update .env with your Injective testnet RPC URL and a funded private key. (See "Configuration" section below.)

Run:

npm run compile                  # compile contract
npm run test                     # run local (simulated EVM) tests
npm run deploy                   # deploy contract to Injective Testnet
npm run verify -- 0xYOURADDRESS  # verify deployed contract on Injective Testnet Blockscout
npm run interact                 # open a Hardhat console on Injective Testnet to
                                 # query/transact with deployed contract

What's Included

Core Scaffold

• Hardhat project structure: Minimal layout for contracts, tests, scripts, and config.
• Injective testnet config: Ready-to-use inj_testnet network in hardhat.config.js.
• Blockscout verification config: Pre-wired hardhat verify support for Injective Testnet.
• Environment-based secrets: JSON-RPC URL and deployer private key in .env.

Example Contract Flow

• contracts/Counter.sol: Tiny example contract to confirm the toolchain works.
• test/Counter.test.js: Local test coverage for the included contract.
• script/deploy.js: Deployment script for Injective Testnet.

Project Structure

├── contracts/
│   └── Counter.sol       # Minimal starter contract
├── script/
│   └── deploy.js         # Deploys Counter to Injective Testnet
├── test/
│   └── Counter.test.js   # Local contract tests
├── .env.example          # Environment variable template
├── .gitignore
├── hardhat.config.js     # Hardhat + Injective + Blockscout config
├── package.json
└── README.md

Configuration

Copy .env.example to .env and provide:

INJ_TESTNET_RPC_URL=https://k8s.testnet.json-rpc.injective.network/
PRIVATE_KEY=your_private_key_without_0x_prefix

PRIVATE_KEY is optional for local compilation and testing, but required for: npm run deploy, npm run verify, and npm run console. Obtain this from your wallet. Fund your wallet using testnet.faucet.injective.network.

The included deploy script uses Injective-friendly defaults:

• gasPrice: 160000000
• gasLimit: 2000000

Author

Brendan Graetz

License

MIT