SOL

sol.js

// This nodejs script read solana keypair file([1,22,19,45,75,..., ]) and out public key and private key to command line
const fs = require('fs')
const { Keypair } = require('@solana/web3.js')
const bs58 = require('bs58')

const keypairData = JSON.parse(fs.readFileSync('./<YOUR_KEYPAIR_FILE>.json'))
const keypair = Keypair.fromSecretKey(Uint8Array.from(keypairData))

console.log('Private key (base58):', bs58.encode(keypair.secretKey))
console.log('Public key (base58):', keypair.publicKey.toBase58())