addBuiltinCommand support

I am using "ioredis": "^4.27.5" and have added some built in commands which i now want to use in the ioredis-mock but not able to do so. I am using "ioredis-mock": "^7.2.0"

const Redis = require('ioredis');

const { REDIS_HOST } = require('../config/env.json');
const { checkIfValidJsonAndReturnJson } = require('../helpers/common/string');

const redisOptions = { host: REDIS_HOST, port: 6379, db: process.env.NODE_ENV === 'test' ? 15 : 0 };

// Transforming Replies
Redis.Command.setReplyTransformer('hgetall', result => {
  if (Array.isArray(result)) {
    const obj = {};
    for (let i = 0; i < result.length; i += 2) {
      obj[result[i]] = checkIfValidJsonAndReturnJson(result[i + 1]);
    }
    return obj;
  }
  return result;
});

Redis.Command.setReplyTransformer('hget', result => {
  if (result && typeof result === 'string') {
    result = checkIfValidJsonAndReturnJson(result);
    return result;
  }
  return result;
});

Redis.Command.setReplyTransformer('JSON.GET', result => {
  if (result && typeof result === 'string') {
    result = checkIfValidJsonAndReturnJson(result);
    return result;
  }
  return result;
});

const RedisClient = (() => {
  let client;
  const setRedisClient = nodeProcessName => {
    client = new Redis({ host: redisOptions.host, port: redisOptions.port, db: redisOptions.db });
    client.addBuiltinCommand('JSON.GET');
    client.addBuiltinCommand('JSON.SET');
    client.addBuiltinCommand('JSON.DEL');
    client.addBuiltinCommand('JSON.ARRAPPEND');
    client.on('connect', () => { console.log("connected) });
    return client;
  };
  return {
    getRedisClient: nodeProcessName => {
      if (!client) {
        client = setRedisClient(nodeProcessName);
      }
      return client;
    }
  };
})();

module.exports = {
  redis: nodeProcessName => RedisClient.getRedisClient(nodeProcessName),
  redisOptions
};

in the unit testing file this is throwing an error

const Redis = require('ioredis-mock');
const { checkIfValidJsonAndReturnJson } = require('src/helpers/common/string');

// Transforming Replies
Redis.Command.setReplyTransformer('hgetall', result => {
  if (Array.isArray(result)) {
    const obj = {};
    for (let i = 0; i < result.length; i += 2) {
      obj[result[i]] = checkIfValidJsonAndReturnJson(result[i + 1]);
    }
    return obj;
  }
  return result;
});

Redis.Command.setReplyTransformer('hget', result => {
  if (result && typeof result === 'string') {
    result = checkIfValidJsonAndReturnJson(result);
    return result;
  }
  return result;
});

Redis.Command.setReplyTransformer('JSON.GET', result => {
  if (result && typeof result === 'string') {
    result = checkIfValidJsonAndReturnJson(result);
    return result;
  }
  return result;
});

const redisClient = new Redis();
redisClient.addBuiltinCommand('JSON.GET');
redisClient.addBuiltinCommand('JSON.SET');
redisClient.addBuiltinCommand('JSON.DEL');
redisClient.addBuiltinCommand('JSON.ARRAPPEND');

this is the error i get

TypeError: redisClient.addBuiltinCommand is not a function
    at Object.<anonymous> (/Users/developer/syook/syook-tnt-server/specs/awilixContainerForTests.js:60:13)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Module._compile (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/@babel/register/node_modules/pirates/lib/index.js:136:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Object.newLoader [as .js] (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/@babel/register/node_modules/pirates/lib/index.js:141:7)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:12)
    at Module.require (internal/modules/cjs/loader.js:974:19)
    at require (internal/modules/cjs/helpers.js:101:18)
    at Object.<anonymous> (/Users/developer/syook/syook-tnt-server/specs/unit/service/ruleAlertGenerator.test.js:26:23)
    at Module._compile (internal/modules/cjs/loader.js:1085:14)
    at Module._compile (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/@babel/register/node_modules/pirates/lib/index.js:136:24)
    at Module._extensions..js (internal/modules/cjs/loader.js:1114:10)
    at Object.newLoader [as .js] (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/@babel/register/node_modules/pirates/lib/index.js:141:7)
    at Module.load (internal/modules/cjs/loader.js:950:32)
    at Function.Module._load (internal/modules/cjs/loader.js:790:12)
    at ModuleWrap.<anonymous> (internal/modules/esm/translators.js:203:29)
    at ModuleJob.run (internal/modules/esm/module_job.js:183:25)
    at Loader.import (internal/modules/esm/loader.js:178:24)
    at formattedImport (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/mocha/lib/nodejs/esm-utils.js:9:14)
    at Object.exports.requireOrImport (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/mocha/lib/nodejs/esm-utils.js:42:28)
    at Object.exports.loadFilesAsync (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/mocha/lib/nodejs/esm-utils.js:100:20)
    at singleRun (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/mocha/lib/cli/run-helpers.js:125:3)
    at Object.exports.handler (/Users/developer/.nvm/versions/node/v14.21.2/lib/node_modules/mocha/lib/cli/run.js:370:5)

stipsan / ioredis-mock

addBuiltinCommand support #1285