A simple on-chain counter dApp built using Solana + Rust + Anchor framework. Demonstrates key principles of Solana smart contract development including:

• 🛠 Account initialization via Anchor's context macros
• 🔁 Counter manipulation (increment, decrement)
• 🧪 Full test suite using Mocha/Chai in TypeScript

• Solana (devnet)
• Rust + Anchor
• TypeScript + Mocha for testing
• Local test validator with solana-test-validator

• initialize: Initializes a counter account with count = 0
• increment: Increases the counter by 1
• decrement: Decreases the counter by 1 (error if already 0)

anchor build
anchor test

Make sure to install dependencies first:

npm install

├── programs/
│   └── my_solana_dapp/       # Rust + Anchor smart contract
├── tests/
│   └── my_solana_dapp.ts     # Full unit tests
├── target/types/             # IDL generated by Anchor