solana-program-examples/basics/close-account/native/ts/util/util.ts

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


export function createKeypairFromFile(path: string): Keypair {
    return Keypair.fromSecretKey(
        Buffer.from(JSON.parse(require('fs').readFileSync(path, "utf-8")))
    )
};