How to import a package in Lambda function

Georges Duverger

Hey, folks. I need to transform a crontab expression (e.g., “5 4 * * *”) into a timestamp of the next occurence. I couldn't think of a way to do so with existing Xano functions so I tried to do it with a Lambda function. My first, naive attempt was to use https://www.npmjs.com/package/cron-parser but I can't figure out how to import packages. Could you maybe put me toward the right direction, or let me know if there is a better way to solve for that use case?

Unknown

Right now Xano doesn’t support importing external packages. They provide a few libraries in their Lambda feature and one of them is Lodash. Perhaps you could check out Lodash and see if it could help with your transformation needs?

https://docs.xano.com/working-with-data/lambdas-javascript/libraries-and-functions

Unknown

Or actually if you are dealing with date/time data, Moment.js or Luxon may be more suitable

Ray Deck

You can build a lambda that pastes i ln most of the code from that parser package. It seems to only depend on luxon which xano has support for. Not super simple but probably an hour of work.

Georges Duverger

 Thanks a lot for the pointers. I'll take a look.