n8n-code-javascript

To return data from an n8n Code node without breaking the workflow, you must return an array of objects formatted as [{json:{}}]. Following this structured return format ensures downstream nodes correctly parse your JavaScript output.

Access incoming items in an n8n Code node using $input patterns like $input.all() for batch mode or $input.first() for single items. Using these built-in access methods prevents reference errors during workflow automation.

Parse a webhook payload and normalize items in n8n by applying JavaScript data transformation techniques inside the Code node. Validate inputs with null checks and optional chaining to deduplicate data before returning the array.

Yes, you can use Luxon DateTime and JMESPath inside n8n Code node scripts through built-in helpers. These built-ins allow you to handle date formatting and query JSON data directly within your automation workflow.

Handle errors and null values in n8n JavaScript automation by implementing guard clauses, optional chaining, and try/catch patterns. These error-prevention techniques stop silent failures in production workflow pipelines.

Call external APIs for data enrichment in n8n Code nodes by utilizing the $helpers.httpRequest built-in method. This function allows your JavaScript script to fetch external data and return validated arrays for downstream nodes.