npm install --save @solana/web3.js

import { Connection } from "@solana/web3.js";
 
const connection = new Connection(
  "https://solana-devnet.g.alchemy.com/v2/YOUR_ALCHEMY_API_KEY",
  "confirmed"
);
 
const slot = await connection.getSlot();
console.log("Current slot:", slot);

import { Keypair } from "@solana/web3.js";
 
const wallet = Keypair.generate();
console.log("Public Key:", wallet.publicKey.toBase58());

const balance = await connection.getBalance(wallet.publicKey);
console.log("Balance:", balance / 1e9, "SOL");

const info = await connection.getAccountInfo(wallet.publicKey);
console.log(info);