This content originally appeared on DEV Community and was authored by Sumana
Introduction
This TypeScript tutorial guides you through fetching and updating wallet balances on the Solana blockchain. You'll learn how to retrieve SOL balances programmatically and perform airdrops, enabling you to manage wallet funds with ease.
Step 1: Setting Up Your TypeScript Project
First, set up your TypeScript project:
npm init -y
npm install --save-dev typescript
npx tsc --init
Step 2: Installing Solana Web3.js Library
Install the Solana Web3.js library:
npm install --save @solana/web3.js
Step 3: Fetching and Updating Wallet Balances
Create index.ts:
import { Connection, PublicKey, LAMPORTS_PER_SOL } from "@solana/web3.js";
import { airdrop } from "../airdrop";
export const showBalance = async (publicKey: PublicKey): Promise<number | null> => {
const conn = new Connection("http://127.0.0.1:8899", "confirmed");
const response = await conn.getAccountInfo(publicKey);
if (response === null) {
return null;
}
return response.lamports / LAMPORTS_PER_SOL;
};
(async () => {
const publicKey = "Your Key";
const balance = await showBalance(new PublicKey(publicKey));
console.log(`The balance of the ${publicKey} is ${balance}`);
await airdrop(publicKey, 5);
const updatedBalance = await showBalance(new PublicKey(publicKey));
console.log(`Updated balance of the ${publicKey} is ${updatedBalance}`);
})();
Step 4: Building and Executing Your Project
Build your project:
npm run build
Run your project:
node dist/index.js
Conclusion
You've successfully fetched and updated a Solana wallet's balance using TypeScript. Keep exploring Solana's capabilities to build innovative and secure applications🚀!
P.S. If you need help with airdropping SOL, check out our Airdrop Post for a detailed guide.
This content originally appeared on DEV Community and was authored by Sumana
Sumana | Sciencx (2024-08-12T17:47:55+00:00) Fetching and Updating Solana Wallet Balances. Retrieved from https://www.scien.cx/2024/08/12/fetching-and-updating-solana-wallet-balances/
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