JS/TS Async SHA-256

sha256.ts

async function sha256(message: string): Promise<string> {
  // encode as UTF-8
  const msgBuffer = new TextEncoder().encode(message);
  // hash the message
  const hashBuffer = await crypto.subtle.digest('SHA-256', msgBuffer);
  // convert ArrayBuffer to Array
  const hashArray = Array.from(new Uint8Array(hashBuffer));
  // convert bytes to hex string
  const hashHex = hashArray.map(b => ('00' + b.toString(16)).slice(-2)).join('');
  return hashHex;
}

export default sha256