Create hash of json object for certain keys

create-hash-from-json.ts

import crypto from 'crypto';

const createHashFromKeys = (options: {
  object: Record<string, any>;
  keys: string[];
  algorithm?: string;
}): string => {
  const { object, keys, algorithm = 'sha256' } = options;

  const content = keys
    .sort()
    .map((key) => JSON.stringify(object[key]))
    .join('');

  const hash = crypto.createHash(algorithm).update(content).digest('hex');

  return hash;
};

// Example usage
const object = {
  id: '123',
  name: 'example',
  data: {
    a: {
      b: {
        c: 'value',
      },
    },
  },
};

const keys = ['id', 'name', 'data'];
const hashSignature = createHashFromKeys({ object, keys });
console.log(hashSignature); // Outputs the hash signature