Provides expert guidance for writing, debugging, and optimizing JavaScript within n8n workflow Code nodes.
This skill serves as a specialized knowledge base for developers working with n8n automation workflows. it provides precise patterns for data access using $input and $node syntax, explains the critical differences between execution modes, and ensures code adheres to n8n's strict return format requirements. By bridging the gap between standard JavaScript and n8n's internal execution environment, it helps users handle complex data transformations, manage nested webhook payloads, and utilize built-in helpers like Luxon for date manipulation or $helpers.httpRequest for custom API calls.
Key Features
01Best practices for handling nested webhook data structures in .body
020 GitHub stars
03Integration patterns for built-in tools like Luxon (DateTime) and JMESPath
04Guidance on n8n-specific syntax ($input, $json, $node, and $helpers)
05Validation of mandatory return formats (Array of objects with json keys)
06Comparison of 'Run Once for All Items' vs 'Run Once for Each Item' modes
Use Cases
01Transforming and aggregating data from multiple API sources in a single workflow
02Performing complex date arithmetic and normalization for reporting tasks
03Writing robust error handling and validation logic for incoming webhook payloads
