@Cron decorator throws: TypeError: cron_1.CronJob is not a constructor

[ivanjd]

I'm submitting a...

[ ] Regression 
[x] Bug report
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead post your question on Stack Overflow.

Current behavior

By following the example here: https://docs.nestjs.com/techniques/task-scheduling I have code that looks like that:

@Injectable()
export class TestCron {
  private readonly logger = new Logger(TestCron.name);

  @Cron('45 * * * * *')
  handleCron() {
    this.logger.debug('Called when the current second is 45');
  }
}

But I get the following error

(node:20320) UnhandledPromiseRejectionWarning: TypeError: cron_1.CronJob is not a constructor
    at ...\node_modules\@nestjs\schedule\dist\scheduler.orchestrator.js:58:29

Expected behavior

No error should be thrown. In fact if I use @Interval instead of @Cron it works as expected:

 @Interval(1000)
  handleCron() {
    this.logger.debug('Called when the current second is 45');
  }

[Nest] 23620   - 2020-01-03 14:35:18   [TestCron] Called when the current second is 45
[Nest] 23620   - 2020-01-03 14:35:19   [TestCron] Called when the current second is 45
[Nest] 23620   - 2020-01-03 14:35:20   [TestCron] Called when the current second is 45

Minimal reproduction of the problem with instructions

What is the motivation / use case for changing the behavior?

Environment

    "@nestjs/common": "^6.10.13",
    "@nestjs/config": "0.0.7",
    "@nestjs/core": "^6.10.13",
    "@nestjs/schedule": "^0.1.1",

[ivanjd]

It turned out that the problem is not coming from the lib, but it is something that other people could run into so I will post a short explanation:

We use tsconfig-paths (https://www.npmjs.com/package/tsconfig-paths) to be able to use module paths relative to the project root. In the project root, however, we have a folder called cron where we keep a set ot cron classes that hold cron methods (as opposed to having cron methods in the service classes). All this classes are exported through a cron/index.ts file and imported as:
import cron from 'cron'.
The lib, however, also uses a module called cron, and when it imports it the resolver imports our cron module instead of the proper dependency.