🔗 Web3 Toolkit

🌐 About

Web3 Toolkit is a lightweight, developer-friendly npm library for blockchain integration. It includes:

• 🔗 Multi-chain wallet connectors (EVM & Solana)
• 🪙 BP Coin Test Utils—for signing, verifying & simulating transactions in test environments

No bulky SDKs. Great for dApps, rapid prototyping, and blockchain learning! ⚡

✨ Features

• 🦊 EVM Connector — Works with MetaMask and other EIP-1193 providers
• 🪂 Solana Connector — For Phantom and Solana wallets
• 🪙 BP Coin Test Utils — Sign, verify, simulate transactions with a minimal dev-friendly toolkit
• ⚡ Zero heavy dependencies — lightweight by design

📦 Installation

npm install @sifat046/blockchain-web3-tools

🚀 Usage Examples

🔗 EVM (e.g., MetaMask)

import { Connectors } from "@sifat046/blockchain-web3-tools";

const evm = new Connectors.EvmConnector();
await evm.connect();
console.log("Accounts:", await evm.getAccounts());
const signature = await evm.signMessage("Hello Web3");

🪂 Solana (e.g., Phantom)

import { Connectors } from "@sifat046/blockchain-web3-tools";

const sol = new Connectors.SolanaConnector();
await sol.connect();
const [publicKey] = await sol.getAccounts();
const signature = await sol.signMessage("Hello Solana");

🪙 BP Coin Test Utils

import { BpCoin } from "@sifat046/blockchain-web3-tools";

const kp = BpCoin.generateEd25519KeyPair();
const ledger = new BpCoin.InMemoryLedger();
const aliceAddr = BpCoin.exportPublicKeyPEM(kp.publicKey);

ledger.faucet(aliceAddr, 50);

const body = BpCoin.makeBody({
  from: kp,
  toAddress: "bob",
  amount: 10,
  nonce: 0,
});
const tx = BpCoin.signTx(body, kp);

console.log("Valid TX?", BpCoin.verifyTx(tx));
ledger.apply(tx);
console.log("Bob's balance:", ledger.balanceOf("bob"));

🛠 Roadmap

• [ ] 🔗 WalletConnect support for EVM
• [ ] 🔄 Auto network switching
• [ ] ⚡ Example dApp boilerplate

🤝 Contributing

Contributions are welcome! Feel free to open issues, suggest improvements, or submit pull requests.

👤 Author

Md Sifat bin Jibon 📍 Student & Full-Stack Dev | Dhaka, Bangladesh

• GitHub
• LinkedIn

📜 License

MIT © Md Sifat bin Jibon