HelloWorld with Hardhat & Viem

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Repository

• Code: github.com/berachain/guides/tree/main/apps/hardhat-viem-helloworld
• README (raw): raw README

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Requirements

• Node v18.18.2+, npm
• MetaMask (or other wallet) with $BERA — use Berachain testnet faucet or similar

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Stack

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Quick start

1. Clone and install
   git clone https://github.com/berachain/guides.git && cd guides/apps/hardhat-viem-helloworld
   npm install
   cp .env.example .env
   
   Set WALLET_PRIVATE_KEY in .env.
2. Compile and deploy to Berachain testnet
   npm run compile
   npm run deploy:berachain
   
   (Uses scripts/deploy.ts and network berachainTestnet.)
3. Verify on block explorer
   npm run verify <DEPLOYED_ADDRESS> "Hello From Deployed Contract"
   
4. Optional — local node: npm run node in one terminal, then npm run deploy:localhost in another.
5. Run tests: npm run test

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Key files