n8n-code-javascript

You can access webhook data in an n8n Code node by using safe data access strategies with $input.all() or $input.first(). This prevents common runtime failures when handling webhook payloads by ensuring your JavaScript securely processes the incoming JSON data.

Yes, you can use Luxon and HTTP requests inside an n8n Code node through built-in helpers and globals like $helpers.httpRequest() and DateTime. These utilities enable robust date-time operations and external API calls directly within your JavaScript workflow logic.

The best way to process multiple items in an n8n Code node is designing your code in Run Once for All Items mode. You use $input.all() for batch data access, iterate through each item, and return a properly wrapped [{json: {...}}] array.

Your n8n Code node likely fails during JSON transformations because the output does not follow the required [{json: {...}}] return format. Implementing safe data access and proper error handling prevents these common runtime failures.

Yes, the n8n Code node supports JMESPath and Node.js modules for data aggregation. You can use the $jmespath() built-in helper alongside standard JavaScript patterns to rank top-N items, compare JSON objects, and format Slack Block Kit strings.