incorrect calculating time when record expiredAt

[itbali]

this are me settings:

import { ConfigService } from '@nestjs/config';
import { ThrottlerStorageMongoService } from 'nestjs-throttler-storage-mongo';
import { getMongoConfigs } from './get-mongo.configs';
import { seconds } from '@nestjs/throttler';

export const configThrottlingWithMongoRec = (config: ConfigService) => {
  const ttlInMilliseconds = seconds(config.get('THROTTLE_TTL')); // Convert ttl to milliseconds
  const expireAt = new Date(Date.now() + ttlInMilliseconds); // Calculate expireAt based on current time

  console.log('configThrottlingWithMongoRec', {
    uri: getMongoConfigs(config).uri,
    ttl: ttlInMilliseconds,
    limit: +config.get('THROTTLE_LIMIT'),
    expireAt,
  });

  return {
    storage: new ThrottlerStorageMongoService(getMongoConfigs(config).uri),
    throttlers: [
      {
        ttl: ttlInMilliseconds, // Use ttl in milliseconds for storage
        limit: +config.get('THROTTLE_LIMIT'),
      },
    ],
  };
};

result of console.log:

configThrottlingWithMongoRec {
  uri: 'mongodb+srv://admin:admin@cluster0.fujwcru.mongodb.net/shoplist',
  ttl: 5000,
  limit: 5,
  expireAt: 2024-05-08T12:47:01.051Z
}

this is what i receive in Mongo:

  "_id": {
    "$oid": "663b745957f26e53877db200"
  },
  "key": "064a679b470bf496d5d7da6efbe6bf56",
  "expireAt": {
    "$date": "2024-05-08T14:11:00.100Z"
  },
  "totalHits": 10
}```


expected to see expireAt in mongo same as in console.log