Create Keypair

import { generateKeyPairSigner } from "@solana/web3.js";

const keypair = await generateKeyPairSigner();
console.log("keypair: ", keypair);

import { Keypair } from "@solana/web3.js";

const keypair = Keypair.generate();
console.log(`public key: ${keypair.publicKey.toBase58()}`);
console.log(`private key(raw): ${keypair.secretKey}`);
console.log(`private key(bs58): ${bs58.encode(keypair.secretKey)}`);